Recommended 3D Printers

3D printers are the perfect complement to a machine shop, and we use them all the time. We’ve had a variety of printers over the years, but here are the printers we recommend:

Our Picks

Prusa i3 MK3S+

The Prusa i3 is the workhorse in our shop, with a decent build volume and excellent print quality. The design is open-source, so replacement parts are readily available (and many can be 3D-printed!) Where the Prusa really shines is its software interface, with intuitive software menus and helpful calibration routines. The linear bearing motion and direct drive extruder also allow for high print speeds while remaining relatively quiet.

The Prusa can be purchased assembled or as a kit.

Creality Ender 3 Pro

The Ender 3 is a fan favorite among hobbyists. With approximately the same footprint and build volume as the Prusa 3 the price is hard to beat. The main downsides compared to the Prusa are the manual bed leveling and the less-intuitive software interface. That’s not to say this printer isn’t great out of the box – and with a large community behind it, with a little upgrading this printer can easily achieve Prusa-level results.

Small Form Factor Printers

Prusa MINI+

After we saw what our MK3+ was capable of, we picked up a Prusa MINI+ as well. Nearly everything said about the MK3+ remains true, however the MINI+ has an even better software interface and GUI screen. This printer does have a Bowden tube extruder, which doesn’t perform as well with flexible materials.

The Prusa can be purchased semi-assembled or as a kit.

Creality Ender 2 Pro

The Ender 2 Pro is a relatively new printer that comes in just under the Ender 3 Pro’s price point and about half the price of (and slightly smaller than) a Prusa MINI+. This printer’s main focus is portability, with a carrying handle, removable LCD screen, and filament spool holder that folds away for easy transportation.

Other Printers We’ve Owned

QIDI Technology 3DP-QDA16-01

QIDI Tech printers became somewhat popular as early MakerBot clones. This was our first printer, and it was a cost-effective alternative to others on the market at the time. One benefit of this printer is the built-in enclosure, allowing for higher temperature materials (e.g. ABS) to be printed more easily.

This specific printer has been discontinued, but click the image above to see a more recent model of this printer.

Markforged Mark Two

The Mark Two is an incredibly capable printer in a clean, professional package with excellent slicing software from Markforged. We enjoyed our time with the Mark Two, however the cost of the exotic filaments was considerably higher than most common FDM printing materials. We found we didn’t need the carbon fiber composite printing capabilities, but if this is what you’re looking for the Mark Two can’t be beat.

Related Videos & Resources:

Markforged Mark Two 3D Printer
Uses for a 3D Printer in the Machine Shop!
3D Printed Chip Evacuation!

Our Story: How I Got Started in CNC Machining!

This video tells the story of how I first discovered CNC machining, the first company I started, early successes – and failures – of bringing a product to market – and how we ended up at this part of our journey running Saunders Machine Works & The NYC CNC YouTube channel!

Building a Website for your Machine Shop: Where to Start

What do you want your website to do?

  • Show Visitors that your Machine Shop is alive and doing well!
  • Show list of Equipment and Capabilities
  • Ensure anyone who searches for your Machine Shop can find your address, email and phone number contact informatino
  • Show off past work to impress visitors and demonstrate CNC machinine, turning and other past work
  • FAQ to help streamline responses to common questions
  • Specific list of information required for anyone looking to submit an RFQ
  • Photos to show off machines, shop floor, sample parts.  Make these great photographs!
  • Online store to launch a present or future product

Website Hosting Platform

For a website to be accessible on the Internet, two things have to happen. The website needs a host, or a place to store its information, and a domain, the name for your website so that other people can find it (for example, our domain is nyccnc.com.)

The great thing is, unless you plan on building your website from scratch and doing it all yourself, you don’t need to even think about these things. Countless services exist to streamline the website making process, here are just a few:

These “all in one” website services are great! You don’t have to have any website building experience or knowledge, and don’t have to pay the expensive bill of a professional web designer. Websites like Wix, Weebly, and Squarespace let you pay a monthly fee to keep your website up, and beyond that you don’t have to worry about it. You decide the name and the content you post to the site, and they take care of all the technicalities for you, hassle free. Their systems are intuitive and easy to use, and make building the perfect website simple!

SEO

No matter how helpful your website is or how clean it looks, it isn’t doing you any good if no one can find it. Search Engine Optimization (or SEO) is a style of writing that incorporates common search terms for your topic into the text on the page. This allows engines such as Google and Bing to find your page more easily when someone searches terms similar to your page. It is important to incorporate a common term into the title or heading, as this is the primary source for search engines to check. Then, scatter the other terms throughout the article or page wherever you can place them without affecting readability. Remember, search engines don’t take into account punctuation so get creative!

For example, we want people looking for tips on how to build their website clicking on this page, and a possible search term would be “how to host a website.” So, we placed these buzzwords into the text (look in the second paragraph) to help guide search engines, and as a result, users, to our page.

What Pages Should You Have?

Users like user-friendly websites. It’s as easy as that. When building your website, have the customer in mind, keep the navigation clear and concise, and make it obvious where the information they need can be found.

Ideas for Navigation & Pages:

  • Home Page – This is the landing page for your site. Every viewer is going to see it, so make sure it looks great. It should also provide a clear and concise “sneak peak” at the rest of the site; this page should let viewers know what your business is all about.
  • Parts Gallery – Whether a gallery of all the parts you’ve made, or a page dedicated to the parts you sell it lets visitors (and potential customers, remember)  know what your capabilities and specialties are based on your work.
  • Equipment List – This should talk about what kinds of machines your shop has, again so that potential customers know your capabilities.
  • Location – Just as it looks, this should let viewers know where you are located.
  • Contact Us – Give users a page with all of your contact information. Email, phone, mailing address, the works. (another great place to shamelessly promote your social media!)
  • Services – Possibly one of the most important pages, this should tell customers everything you have to offer. What kind of machine shop are you? Do you take job shop work, or do you specifically manufacture a set of products for your or another business? Do you specialize in a certain type of machining? This is the place for that information!
  • Meet the Team – Definitely not a necessity, but this page adds a personal touch to the website with a short bio of your employees. It also provides a good place to advertise job openings.
  • Request a Quote – A great idea for job shops, this page gives customers a rough idea on how much your work costs and lets them request a more detailed quote if they want to further pursue a relationship as a client.

Photos

Photos are an important part of any website. Make sure any pictures are relevant, it’s a good idea to use high quality pictures that show your shop or represent your work. It’s an even better idea to use eye-catching images that are from your shop, and avoid stock images altogether.

Social Media

In today’s day and age, social media is unavoidable. This isn’t necessarily a bad thing, not for businesses anyways. Social media presents a GREAT way to connect with customers, letting them know what’s going on in the shop or even progress on a part for a specific customer. While it’s a powerful tool for these reasons, social media is no stand-in for a website (and vice versa.) A website provides a dedicated outlet for all the nitty-gritty information and helpful facts about your business that would be inconvenient to both post and dig through social media to find. This being said, it’s never a bad idea to link one to the other. We link to all of our social media profiles on the banner at the bottom of the page, and our profiles provide a link to the website for anyone wanting more info.

Ongoing Maintenance: Keep Your Website Up to Date!

Website Content: Keep it fresh and up to date!

  • Spend 10 minutes browsing through your site
  • Update for new capabilities, contact information
  • Change photos if possible
  • Do this every 6 months!

Check Search Results:

  • Google Search for your machine shop name
  • Google Search for Machine Shops in your town (e.g. “machine shop Columbus, Ohio”)
  • Compare your search results with a competitors results
  • Do this every 6 months!

Great Websites to Draw Inspiration From:

Liberty Machine, Inc.

S&H Machine

How to Threadmill!

Threadmilling is a great solution for cutting clean threads at any size – but it’s difficult to get a great fit on the first try.

The days of chasing your thread when you can’t get the right fit are over! We’ve found the perfect formula to cut the perfect thread with any tool every time, and it makes learning how to thread mill easy!

Why Threadmill?

  • You can adjust the tolerance of the thread to your desired fit
  • It’s better for hard materials, it allows you to cut material in progressive passes
  • Unlike taps, thread mills won’t get stuck in parts if they break, and often won’t even damage the part
  • You can cut countless thread sizes with a single tool
  • Thread milling allows cutting odd sized threads
  • You can also use a thread mill to back chamfer the hole
  • Thread milling requires much less horsepower from the machine than tapping
  • Threadmills are readily available in carbide, as opposed to most taps being HSS or powdered metal

Stepover and Multiple Passes

When it comes to choosing a radial DOC and number of passes for your thread, there are a few common schools of thought. In the end, nothing is better than testing what works best for you.

A few processes are:

  • Taking multiple shallow, fast cuts
    • Taking shallow, quick passes is relatively low-strain on your tool and can cut down on tool deflection. However, more passes can dull the teeth of the threadmill more quickly over time.
  • Taking a “60/40” slower cut
    • Splitting the cut into two passes can be beneficial as well. Since the profile of the thread is triangular, each pass is removing more material than the last so staggering passes is critical. Cutting 60% of your thread on the first pass (30% of your PDO) and 40% on your final pass (20% of your PDO) eliminates the need for many quick, light passes. However, you may need to utilize repeat passes or adjust your PDO out to account for tool deflection and ensure a proper fit.
  • A combination of the two
    • I find that a happy medium works best for me. I like to set my WOC to about 5% of the threadmill’s cutting diameter (e.g. .019″ for a .388″ threadmill)
    • Number of passes should equal ((PDO/2) / (Cutting Diameter * .05)) rounded up to the next whole number.

Tools:

AB Tools TM1/4

Lakeshore Carbide 5/16-SPTRMLB

Lakeshore Carbide 1/2-SPTRMLB

Tormach 34693

Downloads:

Thread Mill Calculator

Standard Threads Sample

NPT Sample

Parametric Form Mill

Micro Threadmilling

Threadmill Calculator Changelog

Revision 5:

  • Corrected formulas for Common Size Calculations sheet
  • Added tool checker to eliminate cutting too deep of threads with a tool, causing it to break

Revision 6:

  • Added a custom hole size/thread series sheet for custom, non-standardized threads

Revision 7:

  • Made adjustments to NPT sheets for a better fit

Revision 8:

  • Adjusted NPT sheets to match the updated, simpler modeling method

Revision 9:

  • Added effective feedrate/chipload calculation.

Kanban Cards: How We Keep Our Shipping Department Organized!

What are Kanban Cards?

Kanban Cards are how we keep our shipping station organized. Each individual part, whether it be a nut, screw, washer, or circuit board has a card of its own. Once a part runs out of stock or reaches its minimum amount, the card is placed in a bin in our shipping station that lets the planner on the card know more need to be ordered; or, if the order is urgent, the card can go directly to the planner. Each card tells us things such as what the part is needed for, where to find more in house, and where to order more if needed. Below is a breakdown of each individual aspect of the cards we use:

The part number matches the manufacturer part number of the supplier, making it easier to find and order additional parts. For example, 5522172, when searched on the MSCDirect website, will give you the correct 3/8″-16 Screw.

The part description denotes which part each card is for, letting us grab parts we need without having to look up the part number on the supplier website to double check.

The Lead Time is the amount of time it will take to get new parts in or made, letting us know how far in advance to order new stock.

This Quantity is the maximum amount of stock we usually keep. If the part is one piece in a kit or larger product, this box also tells us how many kits can be made with the maximum stock.

The Planner is the employee in charge of ordering new parts when the need arises, and should get the card to place an order when the stock is depleted.

The Supplier is just as it sounds, the company we order the parts from. In the event there is a secondary supplier (like the above Kanban card) the other distributor is also listed, along with the secondary part number.

The Location of the part is where the part is generally found, and not the location of any overstock. For example, the picture above notes that the screws are primarily found in an organization bin on the 440 Rack, but also have a Bread Crumb in a different location.

The Bread Crumb provides an alternate location, should the part run out in its original location. Not every part has a Bread Crumb, but with certain items we keep additional stock elsewhere. For example, we keep additional stock of the screw whose card is pictured above in the Box Room, which has a second Kanban card for the part that should be given to the Planner if out of stock there as well.

The Trigger Minimum Quantity denotes the minimum amount left in stock before more need to be either ordered or replenished from their Bread Crumb location. This box also tells us how many parts or kits we can make with this minimum amount.

This box gives a quick note on what each part bin is for. The part for the card shown above is part of the Dowel Pin Screw Kit for our Tormach PCNC 440 Fixture Plates.

Xometry: A Force Multiplier for Manufacturing Entrepreneurs

Last week, we had a dilemma. We were busy.  Our machines were busy.  While these are good problems to have, it seems too often to be the norm.  And we needed to run a batch of first-run-beta units.  We machined the initial prototypes in-house, made necessary design changes, and were anxious to ship test units. Holding off until shop work quieted down meant delaying the project. Calling shops to outsource the parts would create more work and stress.  So we tried a new option: Xometry.  

What does Xometry do? In simple terms: upload your CAD model and Xometry quotes the job. Instantly. For free. Proceed with the job and Xometry matches your job with a partner machine shop. But Xometry’s value goes beyond the role of matchmaker. Xometry redefines how you can source parts, scale your business, and lessen the time and stress of managing vendor relations. Xometry’s in-house engineering team, their manufacturing know-how, and their machine learning algorithms act a force multiplier for 21st century manufacturing entrepreneurs.   

We prefer video here at NYC CNC, so here’s a summary of our experience submitting our first batch of parts to Xometry:

Video Review

Seven reasons to add Xometry to your toolbox:

  • Xometry has built a network of over 500 machine shops.  When you submit a solid model to their website, you get a near-instant pricing quote. Xometry then uses its intelligent ranking system to match the type of part with machine shops that have completed parts of similar shape, characteristics or complexities in the past.  In other words, they figure out what type of parts are a good fit for what shops – and that’s proven through past work!  That’s cool.

 

  • Hang up the phone.  No more asking friends for recommendations “for a good 5 axis shop”, sending unanswered RFQ emails, or nagging a vendor for an ETA.  The time and stress can crush the entrepreneurial spirit.

 

  • Entrepreneurial success relies on your ability to take an idea and execute on that idea by building your Team and Resources.  Consider Xometry one of your Resources. Xometry may not be your only source for machined parts – perhaps you have in-house equipment, or good existing relationships with other shops.  Leverage Xometry when you’re over-capacity, or want to send out an anonymous prototype to get a quick test part machined and stay under-the-radar on a new prototype.

 

  • If manufacturing isn’t your forte, but you need parts made, Xometry’s in-house engineering, their manufacturing background and their various website and PDF resources are priceless.  Take a look at https://www.xometry.com/manufacturing-standards.  When pursuing my first entrepreneurial endeavor, I did not speak the language of machining (or 3D printing, or EDM or sheet metal).  I did not know what a “thousandth” of an inch was.  The ability to find CAD and engineering talent (see our article on Upwork.com) then source parts through Xometry is a powerful recipe for a manufacturing entrepreneur.

 

  • Instant Pricing: iterate your design-for-manufacturing process by leveraging Xometry’s instant (and free) quoting process. It’s not perfect (and you can request a manual quote review, but we found their pricing competitive when quoting at quantities high enough to bake in the setup and programming costs.

 

  • Xometry isn’t pretending to be machinists. Xometry’s value proposition to machine shops is to let a machine shop do what they are good at: programming parts and running machines.  Xometry helps fill the skill-gap so often missing in machine shops: marketing, sourcing work, and maintaining customer-facing processes.   Like we talk about in our Lean Organization video, we enjoy working for “the process” – even if we are the boss.  Xometry gives machine shops a platform to maximize odds of success – whether checkpoints on ordering material or guidelines on packing parts.

 

  • Fail fast, fail cheap. When you have an idea: get it designed, get it made, and get it tested!  And do so with as little money and time as possible!  For bootstrapping entrepreneurs, cash is precious; machining or 3D printing in-house may be the best path.  But for many entrepreneurs, time is the limiting factor. Xometry handles this process for you, requiring only minutes to upload a CAD model and place an order.   For those that have read the E-Myth revisited, think of Xometry as a well to keep you focusing on being the Entrepreneur and Manager, not perpetually trapped in the technician role.   We’ve now implemented this strategy for both machined parts and 3D printed parts where we’ll rapid design an idea, send it out for manufacturing and then a few days later, we have a functional, tangible part in our hand with minimal distraction.

Is a Business Idea Worth Pursuing?

Should I pursue a business or product idea?  Is it a viable product?

In the world of entrepreneurship, the advice is often given to “fail fast, fail cheap”.   “Fail cheap,” because the failure has less chance to burn precious capital, and “fail fast,” because some of the best lessons happen through our mistakes.   A key part of being able to fail fast is to validate your idea!

When you have your first idea for a product, you quickly learn there are a lot of costs involved in bringing it to market.  The goal behind a new product is to sell enough to recoup the initial costs  and reach profitability.  If you bring your product to market and no one buys it, you lose your initial investment and time!  The way to prevent this is by validating your idea before spending significant money and time bringing it to the market.    Idea validation can happen in many ways ranging from simple to complicated systems and is used by businesses of all sizes from the solo inventor/machinist working in their garage to global corporate giants.  Idea validation helps you spend your business working capital wisely, and it can be used to secure investors or a loan.  This article lists common idea validation techniques that I find most useful to aspiring entrepreneurs.

Many aspiring entrepreneurs start by getting excited about a single idea or invention.  Maybe they have found a way to solve a problem in their daily life.  This is a great start! However, if you are planning on marketing your idea,  you need to check whether other people have this problem and would find your solution useful. The first steps to validate an idea are doing a Google search.   Search the problem and see if you can find any solutions already in the market.  Sometimes you may find that your exact idea is already commercially available,  other times you may find that a better idea is already available.   Ask yourself if there is any way you can improve your idea to make it better than the solutions already available.   If you do a search and cannot find a solution to the problem,  or if your solution is better/cheaper/simpler than other solutions, then you’ve passed the first step in idea validation!   

The next step is to validate your idea with the market.  Be careful using friends or family for this process. Their answers,  while good-intentioned, might not be ‘honest’ feedback,  or they may not be part of your target audience.   Getting your idea in front of potential customers is where you will find the best validation (or rejection!) of your idea.  Keep an open mind.  If a customer “rejects” your idea – for example, they aren’t interested – do not ignore this result or attempt to persuade them.  Below is a breakdown of some common ways to do solicit feedback:

Focus group / survey

Surveys and focus groups are “old school” methods used before the invention of the internet.  While these are tried-and-true methods that can be a good way to connect with potential customers and do market research, they are time consuming and expensive,  and good feedback takes a long time. For example, let’s say your product idea is a new knife design. See if you can hand out surveys at the local knife shop or pull together a group of their best customers to show off your idea to in exchange for their feedback.   

Internet Forums / User Groups.

With the invention of the internet,  it is easier than ever to get quick, direct access to huge groups of potential customers who are interested in virtually any ‘niche’!  Interested in fidget spinners or performance mods for mopeds?  Visit a fidget spinner or moped forum!   You could start by searching these forums for keywords related to your problem or solution;  this would give you a better idea if others are having the same problem as you.  If you have a prototype or drawings of your idea, starting a new thread asking forum members if they’re interested is a good way to get feedback.  Be sure to read and follow any forum rules before posting and don’t “spam” your idea.   

Crowdfunding / Kickstarting

In the past few years,  crowdfunding sites have exploded,  providing an excellent way to validate your idea and if successful,  get funding to bring it to market.   These sites allow you to post a video and description of your product to demonstrate it to the world, and let people ‘back’ you by contributing money to your campaign in exchange for a reward, which can be anything from a sticker or shirt with your logo to a discounted copy of your product.  Typically the campaign owner sets a funding goal before the campaign is launched.  This is usually the amount of money needed to bring your product to market,  for example,  the amount it would take to get the first production run manufactured.   If the funding goal is met,  the campaign owner receives the money (less commissions) and is able to start production.  If the funding goal isn’t met,  none of the money is paid to the campaign owner.   It’s good to set your funding goal to a reasonably low level so it can be met,  but high enough to cover your costs to bring the product to market. For physical products, Kickstarter is the leading crowdfunding site, but Indiegogo is a close runner up.   Note that Kickstarter requires you to demonstrate a working prototype of your product in your campaign while Indiegogo doesn’t.  

Validation through Pay Per Click (PPC) ads

In the world of advertising, Pay Per Click (PPC) ads are a great marketing tool offering the best ‘bang for your buck’ of most any advertising medium. Google Adwords and Facebook Ads are two of the biggest PPC ad services.  These services are not just a marketing tool,  they are also a great way to validate an idea and compare multiple ideas or idea variations.    To validate an idea through PPC ads,  one first picks a target audience.   Let’s say I have two product ideas:  one is  is a performance exhaust system for mopeds and the other is a moped turbocharger.  I think these are both great ideas, but I don’t know which one to bring to market. I might create a Google Adwords campaign and target people who search keywords like “moped”. Then,  I could create two different ads to show these people; one advertising an exhaust system and the other advertising a turbocharger. The ad that received more clicks would likely be the more popular of the two ideas.  Note that many people will test variations of ad copy too in these types of ads to see which performs better,  but that’s a more advanced topic for another article. With PPC ads,  just as the name implies, you are only charged when someone clicks on the ad. Depending on the keywords used,  this might only be a few pennies per click, meaning that a lot of testing can be done for a relatively small amount of money. When someone clicks on a PPC ad, they’re redirected to a webpage of your choosing,  so it’s good to also use these ads to start building a list of potential customers or redirecting them to another form of validation: the landing page.

Another way to validate using PPC ads is to use these ads to drive traffic to social media, such as a Facebook or Instagram page.   Comparing the number of people who visit your page versus the number that follow or subscribe can be an indication of interest in your idea.

Landing Pages

A “landing page” is the first page someone visits when going to your site. This term is more commonly used in the marketing world to reference a single page that tries to compel a visitor to take an action like make a purchase or sign up for an email list.  There are sites like Launchrock and Leadpages that make creating these pages quick and easy.   The way one might use a landing page to test an idea could be as follows:   I could create a landing page announcing my moped performance exhaust system that will be available for sale in two months.   On this page I would put a form that allows people to subscribe to my email list.   Comparing the number of visitors to my page with the number of subscribers will give a strong indication if there’s any interest in my product.   In addition, building an email list is a powerful way to market a product.  A basic strategy would be to email your customers a reminder as the launch date of your product gets closer, and another reminder when your product is finally available for purchase.

Keyword and Trend Searches

Many of the major pay per click ad networks have keyword search tools that let you test keywords for popularity. For example, the Google Keyword Planner shows the average monthly searches for a keyword. This can be helpful for both ad campaign planning, and validating product ideas.   Another google tool called Google Trends is a great tool for comparing how keywords are trending against each other over time.  This can help determine if the market for your idea is growing or shrinking.

Marketplace Listings: Ebay and Amazon

Ebay and Amazon are two of the biggest online marketplaces.  Sometimes it’s easy to gauge if a market is exploding in growth by looking at popular products selling on these marketplaces.  For example, it only took six months for fidget spinners to go from virtually no amazon listings to tens of thousands of listings responsible for 17% of Amazon’s toy sales.  If during that time there was any doubt that fidget spinners were popular,  doing a few minutes of research on Amazon would support support that hypothesis.   For more advanced researching of these sites,  there are specialized research tools such as Terrapeak and Slice that can give you more detailed analysis of the products available on Ebay and Amazon.

Validation by Execution

One of the reasons to use idea validation methods is to avoid investing huge amounts of time and money on developing a product or non recoverable expenses like tooling.  Some ideas have little difference between the prototype or idea stage, and the final product stage.  As a kid, I didn’t start a Kickstarter campaign or run a focus group to determine if I could make money by mowing lawns.  Instead, I showed up at my neighbor’s house with my parents’ lawnmower and asked if they would pay me to cut their grass.  Sometimes a product idea can be this easy to bring to market.

Technology is always changing

In this article, I’ve briefly described some of the most commonly used ways to validate an idea, however this wasn’t intended to be an exhaustive list of every validation method possible.  Technology is always evolving, and that includes tools for market research. There are hundreds if not thousands of specialized research tools that can be used to examine different markets, and you may need to find an industry specific tool to get good feedback depending on what your idea is.

Validation as a method of product improvement

Exposing your idea to the public is a great way to get feedback,  and feedback is a great way to improve upon an idea which in turn will make it more appealing to customers. Even if you do an extensive amount of validation before launching an idea, listening to customer feedback after launch is just as important, and may lead to ways you can improve your product or give you an idea for your next one.   I love meeting my customers at trade shows and talking to them on social media… some of the best ideas and improvements to my products come from the people who use them everyday.