LongMill Benchtop CNC

(324 customer reviews)

From: $1,200.00

The LongMill is a powerful and affordable hobby CNC router perfect for any workshop.

Scale it to your needs by choosing from one of it’s three flavours: 12×12, 12×30, and 30×30.

The machine name roughly corresponds to its cutting area in inches and each machine has 113mm (~4.4″) of Z-axis travel.

What sets the LongMill apart:

  • Simple and reliable design ➜ angle-aluminum plus thick steel gantries makes for a rigid and dependable machine
  • Lead screw driven on all axes
  • Mounts directly to any surface you wish ➜ freedom to integrate clamps or custom jigs that suit your work style
  • Tall cutting height ➜ don’t be limited when you want to cut large, intricate 3D surfaces or flatten large lumber slabs
  • Proudly made in Canada

Shipping is calculated at checkout.

Orders placed today will ship in 2-3 weeks.

Description

Turn your ideas into a reality with the LongMill Benchtop CNC

The LongMill helps you take your woodworking and fabrication to the next level. Its range of workable materials include: any species of wood, a variety of plasticssoft metals like aluminum and brass, and a variety of machinable foams and waxes for model making or metal casting. Make signs, engravings, mid-size furniture, stands and shelves, wooden toys and games, guitar bodies, and much more! (see more in our Gallery)

We offer our machine because CNC technology opens up a whole new world of making capabilities, especially to those who have a limited shop environment or budget. Our goal is to empower you by giving you access to both a machine that’s capable of a wide range of projects, and by assuring you of the assistance that you’ll receive from our team as well as our ever-growing community of machine owners: many of whom started off green to the world of CNC as well but are now happy to share what they’ve learned along the way. (see our Facebook group and Forum). We provide a complete set of resources and instructions to get you on your way to running your first job on your machine.

We designed the LongMill to be the best hobby CNC router in its class, offering rigidity, and reliability, while being easy to put together. With large extruded aluminum rails, fully supported Y-axes, 1/4″ steel gantries on all axes, and high precision MG-12 type linear guides on the Z-axis, the LongMill is the most powerful CNC router in its class and price point.

Every kit comes with all the…

Assembly only takes a few hours and can be done with a set of wrenches, Allen keys, and a flat head screwdriver. There is absolutely no soldering. We’ve spent thousands of hours designing and testing the LongMill to ensure that this machine is easy to put together. If you can put together IKEA furniture, then putting together the LongMill will be a breeze.

What do you provide?

  • Your own wasteboard/spoilboard (found at your local hardware store), this is the surface that you’ll be mounting your machine to. See the ‘Size’ tab above for more info.
  • A router (purchase one from us, use one you already have, or find one at your local hardware store/online)*
  • Tools to assemble the machine (wrenches, Allen keys, flat head screwdriver)

For routers, we recommend the Makita RT0700/RT0701. It’s reliable, powerful, is speed-adjustable to a large range (10-30K RPM), and its uniform outer body allows for versatile z-axis mounting. We’ve been using the Makita on our CNC machines for years.

There are some other compatible trim routers on the market that you could use – bear in mind we haven’t tested any of these in-depth:

  • Dewalt DWP611 (uses 71mm mount)
  • Carbide 3D Compact Router (uses 65mm mount)
  • Avid Power MW104 (uses 65mm mount)
  • MLCS Rocky 30 9056 (uses 65mm mount)
  • Ridgid R2401 (needs to adapt from 61mm to our 80mm mount to clear it’s ~6x15mm protruding body notch)
  • Bosch Colt PR20EVS (uses 71mm mount but sits much higher up than normal, you’ll have to space up your material)
  • Bosch Colt GKF125 (needs to adapt from 72mm to our 80mm mount, also sits much higher up than normal)

The LongMill can accommodate bore sizes of 52, 65, 71, and 80mm,  Don’t see your router listed? Let us know the diameter of your router so that we can make an adapter. 

Please note that routers/spindles which are…

  • Over 2.7kg/6lbs
  • Wider than 80mm/3″

…may not be compatible. Please message us with your router size if you have a router that isn’t listed.

*Routers that we supply will be 110V only (North America). If you live in a country that uses a different voltage, please purchase a router in your region. LongMills will come with a power supply that supports both 110V and 220V.

The LongMill comes with free software and is compatible with dozens of other paid and free software. Try our Toolchain Wizard to get a quick recommendation for software that may work best for you.

Technical Details:
– Laser cut, 1/4″ steel gantry plates for high rigidity
– Standard profile, extruded aluminum rails on the X and Y axis and MGN12 linear guides on Z axis
– Delrin V wheels with variable eccentric nuts
– 4-start, 2mm pitch, 8mm diameter ACME lead screw for high torque and fast movement
– NEMA 23 stepper motors on all axis
– 3D printed and aluminum parts
– Mount for Makita RT0701C routers, or request a custom mount size
– 24V power supply
– Arduino board loaded with GRBL firmware
– 4A TB6600 drivers

Our machine uses open-source hardware and firmware, letting users build and modify their machines. Not only that, many of our components are standard and easy to source or 3D printable, making replacing parts easy.

Additional information

Weight 60 lbs
Dimensions 8 × 10 × 41.5 in
Size

12×12, 12×30, 30×30

Weight 60 lbs
Dimensions 8 × 10 × 40 in
Size

12×12, 12×30, 30×30

Weight 0.8 lbs
Dimensions 3.8 × 3.6 × 0.8 in
Router Size

52mm, 65mm (Makita Router), 71mm, 80mm

Weight 5 lbs
Dimensions 10 × 8 × 6 in

Weight 1.9 lbs
Dimensions 12 × 8 × 2.875 in

Weight 0.354 lbs
Dimensions 4 × 6 × 0.5 in

Weight 0.3 lbs
Dimensions 6 × 4 × 1 in

Size

Once assembled, each model of the LongMill (12×12, 12×30, and 30×30) is designed to generally fit on a 2×2′, 2×4′, and 4×4′ surface respectively. The diagrams below show a more detailed view for each model:
  • The red area inside the main box shows the cutting area as an offset from the foot base. It’s based off the center-point of the router, thus you can plane an area larger than what’s stated if you’re using a large surfacing bit.
  • The blue area outside the main box shows the hanging parts as an offset from the foot base which makes up the total machine outline.
  • If you have the dust shoe attachment in place, it’ll reduce your cutting travel in the X-dimension by approximately 50mm.
At the end of the day, this leaves you with:
Model LongMill 12×12 LongMill 12×30 LongMill 30×30
Cutting area 307mm x 345mm (~12″ x 13.5″) 792mm x 345mm (~31″ x 13.5″) 792mm x 845mm (~31″ x 33″)
Max stock width (distance between feet) 435mm (~17″) 920mm (~36″) 920mm (~36″)
Machine area 650mm x 610mm (~25.5″ x 24″) 1135mm x 610mm (~45″ x 24″) 1135mm x 1110mm (~45″ x 44″)
Machine height About 14″, but if you’re planning to build an enclosure you should make it at least 20″ tall to ensure enough space for hose management, manipulating cutting material, etc.
If you’re looking to properly size a space to put your machine or are making a dedicated table, ensure that you leave enough room for the LongMills control box and any other peripherals that you might be using like a laptop, monitor, keyboard, etc.. The control box is roughly 150mm x 280mm, has holes so that it can be easily screwed or mounted to any surface, and has a USB port on its left side which allows for you to connect your computer to control the machine. By default the clearance height under the X-axis rail is 104mm (~4″) so if you’d like to take advantage of the full 113mm (~4.5″) of Z-axis travel that the LongMill has to offer, the feet can be spaced up by two strips of material on each side to gain more height clearance. If you’d like to see some tables that our community members have built for their own machines, we’ve got a page on it here: Community Table Builds

Add-ons

You can include add-ons to improve the functionality of the LongMill. These are all optional.

Trim Router

We recommend using the Makita RT0700/RT0701 router 110V with your LongMill. This router comes with speed control from 10,000 to 30,000RPM and has 1.25HP of power. This router is compatible with 1/4″ shank tooling and can be adapted to 1/8″ shank tooling using a 1/4″ to 1/8″ collet adapter.

Dust Shoe

Our Z-axis independent, magnetic dust shoe allows you to attach standard vacuum hoses to your CNC machine, allowing it to suck up dust as it’s cutting, making clean up easier and keeping dust out of the air. This dust shoe is adjustable in the Z direction, and the front bristles and vacuum hose can be easily detached to make it easy to change bits.

Touch Plate

Our 3-axis touch plate allows you to set the ‘origin’ or starting point of your cutting tool very accurately based off the surface of the material you’re going to be cutting. Place the touch plate onto the corner of the material to locate the cutting bit in both X, Y, and Z-directions to start your cutting job, or use it to set the Z-height of the tool to accomplish tool changes on more complicated projects.

Bit Starter kit

Our End Mill Starter Pack comes with a basic set of end mills to get your started for many projects you might have in mind. Each pack comes with:
  • 1/4″ Spiral Up Cut End Mill
  • 1/4″ Spiral Down Cut End Mill
  • 1/8″ Flat End Mill (x3)
  • 1/8″ Ballnose End Mill (x3)
  • 1/4″ to 1/8″ Collet Adapter

FAQ

What materials can it cut?

The LongMill can cut materials like wood, plastic, foam, and soft metals. We’ve also had customer cut tougher materials like thin stainless steel and copper sheet.

Where can I buy end mills and other tooling?

End mills and bits are available on sale on our website as well as online such as Amazon and Ebay, or at your local hardware store such as Home Depot or Lee Valley.

What software can you use with the LongMill?

The LongMill is compatible with dozens of free and paid CAM software. The LongMill is compatible with standard G-code. You can check out our resources page at www.sienci.com/resources and look under the software tab. We’ll be hosting webinars and creating additional resource videos to help you learn to design and program your CNC machine.

What system requirements are there?

You can run your machine off virtually any modern laptop made in the last 5 years running Windows, Mac OS, and Linux.

We’ve tested our machine with Intel Celeron and AMD Phenom processors with less than 2GB of RAM with no issues (although it is a bit slow).

For any other downloadable CAD or CAM programs that don’t run on the cloud, please check with the software creator for minimum system requirements.

What spindles or routers can I use?

While we recommend the Makita RT0701/RT0700, you can also use other trim/palm style routers. You will be able to let us know what tool you want to use and we will send you the appropriate mount.

Can I add end stops?

Although end stops are not needed on this machine, they can be added. Our electronics support end stops and is easy to integrate.

We’ll have more details on adding end stops soon.

Will there be 4th or 5th axis support?

In the immediate future, there will not be 4th or 5th axis support for the LongMill.

If you would like to implement an additional axis to your machine, we encourage users to try creating their own and sharing it with the community!

Warranty

The LongMill has a 90 day warranty once it’s received.

We want you to have a great experience with your machine, so if any parts are found to be missing or damaged, please email us. We will ensure that you receive the support you need to restore your LongMill to operating condition or provide a full or partial refund.

You may cancel an order if it has not shipped yet, please contact us if you wish to do so. We do not offer returns for LongMills that have already shipped.

General Warranty and Limits of Service:

Effective March 4, 2019

Throughout this policy the words “we”, “us” and “our”, or “Sienci Labs” will be used to refer to Sienci Labs Inc. herein and “LongMill” or “machine” will refer to Sienci Labs’ Sienci LongMill 12×12, Sienci LongMill 12×30 and Sienci LongMill 30×30. Additionally, the words “you”,  “your”, “user”, and “operator”  will refer to the original purchaser/customer, user, or viewer of any of the products or media provided by or through Sienci Labs.

Sienci Labs Inc. (the “Company”) grants the LongMill (the “Product”) a standard warranty within Canada and the US to the original customer to be free from missing parts, defects in material, and defects in workmanship for a period of ninety (90) days from the date of receipt by the original purchaser. Sienci Labs Inc. will ensure that the appropriate support is provided to the original customer to restore the LongMill to operational condition or provide a full or partial refund under the sole discretion of the Company.

This warranty does not cover damage due to improper use or assembly, lack of maintenance, normal wear and tear, or modifications to the LongMill which are not produced or authorized by the Company. Consumables such as cutting tools and sample or stock materials which may have come with your LongMill are not included in this warranty.

This warranty will become void if the operator does not follow the Safety Warnings and Guidelines, uses the Product for illegal purposes, or intentionally causes damage to the Product.

The original customer must contact Sienci Labs Inc. within ninety (90) days of receiving their order to make a warranty claim to be eligible for warranty service. Proof of purchase, tracking number, email address, or other material will be used to confirm the original purchasing date and the identity of the original customer. If damage was due to shipping, original packaging materials must be kept in the original received condition. Photos, videos, written descriptions, and other items may be requested to assess and validate a warranty claim.  In the case Sienci Labs Inc. requires the original parts to be returned, the customer is solely responsible for packing all items securely. Damage incurred during return shipping will not be covered by the warranty. A method of payment such as a credit card may be requested by Sienci Labs Inc. to cover shipping costs or damaged items if Products are not eligible for warranty service.

324 reviews for LongMill Benchtop CNC

4.8
Based on 324 reviews
  1. Rob (verified owner)

    Hey Fellas, I found the ordering process for the machine easy to use other than, when adding a bit to my order, it would kick me back out to the main area. It would be ALOT nicer if you can add and delete things to your cart without the page navigating away. I purchased a handful of bits and had to refind the bit page everytime. (About 6 times)
    The building process and instructions were faily clear but some things were not great. I had to make assumptions and in an exact build, I hate to assume. A few assumptions I made were wrong so I had to redo.
    The service was great, I spoke with a few of the guys there over the phone and everyone was happy to talk about anything I needed. I had an issue with my machine hitting the rail and getting hung up on the bolt. I emailed the pictures of my issue and was told that’s normal…
    As for the programming and getting the machine to work from my computer, I found this easy enough. I am using easel for my projects and I have been able to make pretty much everything I’ve wanted to so far.
    Overall I am happy with my machine for the cost. People say if you buy cheap, you buy twice. In this case I feel like it should last a few years without any major problems. I would upgrade some of the bolt hardware as I found some of the items could be better quality.
    -Machine ordered December 26, 2020

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  2. Michael V. (verified owner)

    I really like the machine. So I give it 5 stars. When doing 3D carving the magnetic dust shoe allows chips to escape from under. Or maybe my vac doesn’t have ample suction. Thought about one that attaches to the spindle so as to move up or down with the spindle.
    -Machine ordered December 26, 2020

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  3. Joseph B. (verified owner)

    The only comment that I have is that I wish there was a way to more easily tram the CNC. Still a great product!!!!
    -Machine ordered December 27, 2020

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  4. Craig (verified owner)

    Performance exceeded expectations. I have past experience with machining which made the learning curve very easy for me. Assembly was straight forward after spending quite a bit of time reading and reviewing the assembly instructions prior to delivery. Once the build was finished moved seamlessly to making projects. Amazed every time I run the machine at just how well it cuts.
    -Machine ordered December 25, 2020

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  5. Dustan Waid (verified owner)

    I purchased my LongMill without having any CNC experience. I was able to assemble my machine in about 6 hrs. It is a very sturdy machine. I had a very successful first project. I have since updated the table it is mounted to. I have about 25 hrs on it and I haven’t had any issues with the machine or software. I have had errors in my setups caused by lack of experience. I make military plaques, flags, and other military and public safety gifts. Definitely recommend this product.
    -Machine ordered December 24, 2020

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  6. Scott R. (verified owner)

    still learning
    -Machine ordered December 10, 2020

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  7. John Sawatzky (verified owner)

    Good machine. Doing basic carving but it has done everything I have asked of it.
    -Machine ordered December 17, 2020

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  8. David Mitchell (verified owner)

    I didn’t really expect such high quality. The instructions for assembly were easy to follow. I only used customer service when I was having difficulty getting the machine to communicate with grbl and you tech’s walked me through it without making me feel foolish. Beyond just the basics of getting to know the machine and Vcarve, I have been turning out clock faces and cribbage boards.
    -Machine ordered December 7, 2020

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  9. Joseph McIntyre (verified owner)

    The longmill is an outstanding machine. Very easy to use and produces amazing products. The customer support that Sienci provides is top notch. They were available avery step of the way when I needed help. I highly recommend this setup for anyone who desires to get into hobby cnc or even a small shop doing woodworking and acrylic pieces.
    -Machine ordered December 7, 2020

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  10. Bryce H. (verified owner)

    Great machine. Awesome customer service. Huge learning curve but lots of help and resources to flatten that curve. Doubt regret the purchase one bit.
    -Machine ordered December 8, 2020

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  11. Derek H. (verified owner)

    Assembly instructions were excellent. Instructions re wiring and installation of software could be better. Customer support team is excellent!
    -Machine ordered November 24, 2020

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  12. amos a martinez (verified owner)

    I love it. I’m enjoying it very much made some beautiful signs already soon I’ll be doing 3 D projects. Machine is strong n built good thank u guys very much. Once I learn the forum I’ll post pictures thank u again. All other ones. R to expensive
    -Machine ordered December 8, 2020

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  13. Gerardo Daniel Flores (verified owner)

    Best product in the market at a great price with easy assembly and great product support. Highly recommended!
    -Machine ordered December 2, 2020

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  14. Robert (verified owner)

    great machine
    -Machine ordered December 2, 2020

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  15. Anonymous (verified owner)

    Easy to assemble will well documented with step by step instructions.
    -Machine ordered December 2, 2020

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  16. Danny S. (verified owner)

    Great machine, easy to put together, outstanding documentation and customer service!
    -Machine ordered November 28, 2020

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  17. David R. (verified owner)

    Overall a great Canadian company with a great product and even greater support team. As new to the world of CNC and just trying to learn the names of the parts and what they do, I was able to assemble the machine with no issues. I did run into some issues post assembly with running the machine, but the support team was EXTREMELY helpful with all the trouble shooting and helping to get it running smoothly. If it wasn’t for the support team, my overall rating would be lower. Thank you to everyone at Sienci Labs!
    -Machine ordered November 27, 2020

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  18. greg edginton (verified owner)

    would recommend to anyone from shipping who noticed a business address and called at christmas to see if that was still good to ship and changed to home to support when i had a problem well done very happy
    -Machine ordered December 1, 2020

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  19. tim (verified owner)

    Ease to set up. Customer service is the best.
    -Machine ordered November 28, 2020

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  20. Matthew Bellizia (verified owner)

    First cnc, I found it to be a great machine, well build, great packaging and shipping. Instructions were clear and easy to follow, very detailed. I’m very very pleased. No gripes, but one concern. My v wheels seem tight, eccentric nuts are as loose as I can make them. Agree running the machine I notice spots of black material building up on the rails of my x and y axis. Scrapes off easily, but I worry I may be wearing my wheels prematurely. Great job on these machines tho, thank you for the great product.
    -Machine ordered December 1, 2020

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  21. Michael J (verified owner)

    Love the machine. Went together just like the videos and instructions (maybe 2 or 3 typos at most) and had an awesome time filming my build trek, which helped me take my time and catch my mistakes before I messed up too much. Hardest part is getting a free to low cost development and CAM software that is easy to learn and use and then port to Gcode – have spent way more time on finding the most compatible software (close but not there yet) than I counted on and I am from the IT world. For newbies – make sure and hit the forums and FB group – they are the best.
    -Machine ordered November 27, 2020

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  22. Franklin G. (verified owner)

    I am a CNC machine tool operator for 35 years. The assembly was great no real issues.I have not needed any support from you as of yet sounds like there is plenty of support from everyone. I am still playing with the software and just cutting air for now, I have to understand that this is not like a $300000 dollar CNC I am used to running in steel, I will get the software down I have a 32 year old son in IT for a top 10 corporate company plenty of support there.
    -Machine ordered November 27, 2020

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  23. Freddie Patterson (verified owner)

    Very satisfied with quality of Longmill and customer service is outstanding. Can’t wait to progress in my ability. Thanks Chris and Andy having such a great product.
    -Machine ordered November 22, 2020

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  24. Kyra M. (verified owner)

    After doing a lot of research on various machines, I couldn’t be happier with my choice. The tipping point for me was the lead screw design of the LongMill over the belts of other hobby level CNC machines. I want to be able to machine with extreme accuracy and I felt that the belts would leave much more room for error. I also wanted to support a Canadian manufacturer and a company that is very engaged and supportive with it’s customer base. I am a woodworker by trade and I have very little experience with programming and electronics. I would say the assembly was more challenging than I anticipated and I would highly recommend following along with Sienci’s assembly videos on Youtube. Initially I built my machine using only the manual instructions and it was difficult to visualize a couple of the assemblies. Upon watching some videos my confusion was cleared up very quickly. Since assembly I have had a couple of issues with the machine (all minor mistakes on my end/loose bolts) and because I built the machine I was able to solve the problems quickly. I am extremely happy with Sienci’s forum as well. There is a ton of information available and the environment is supportive and inspiring. I am so happy that I chose to support this local company. I also purchased the dust boot, probe and various cutters from Sienci and I am very happy with their performance as well. For the price-point, footprint and capabilities, the LongMill has really exceeded my expectations.
    -Machine ordered September 23, 2020

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  25. Andrew O’Hara (verified owner)

    Instructions for setup were easy to follow, all the parts went together easily. Only issue I had was that the hole type end link for holding the Y Axis drag chain on the left hand side broke, but a couple of small zip ties fixed that.
    Love the speed and accuracy of this machine, lots of tutorials online for getting the most out of the Longmill and VCarve.
    -Machine ordered November 12, 2020

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