Description
***Included with your AltMill MK2 4×4***
- SLB-EXT controller and emergency stop
- Partially pre-assembled rigid frame
- Inductive sensors for homing
- Sturdy metal legs with the ability to add 4ft wide shelving underneath
- Welcome package
***Not included with your AltMill MK2 4×4***
Check out our recommended products tabs for an ideal set up, but note the following ARE NOT included with your order:
- Computer or laptop
- Spindle
- End mills or bits
- T-tracks
- Waste board (e.g. MDF 2ft x 4ft sheet)
- Set of metric Allen keys, standard bits or drill for assembly
***Some photos may contain items for illustrative purposes, such as spindles, caster wheels, t-tracks, or additional shelving. There may also be cosmetic differences between the machine in the photo and the production version of the AltMill.
Lead times
This product has a potentially long waitlist, relative to demand and seasonality. For more info on expected shipping and delivery times, please see our Order Status page.
Jason S. (verified owner) –
Finally got to assembly, which went smoothly
David C. (verified owner) –
So fast and powerful, the closed loop steppers are amazing!
Mark Dalton (verified owner) –
This seems to be a great value compared to others.
YU-CHUAN LO (verified owner) –
Had some delays setting up my workshop but recently completed that and got my altmill running. Already carved my first project and it was amazing!
Machine assembly was a bit hit and miss at times because there is a video but there is also documentation and these differ somewhat. Also, some parts of the video aren’t very clear in terms of orientation etc so I had to bounce between the two to get through assembly. One big callout I feel is worth mentioning, perhaps you guys can print a label or big sticker is a reminder to remove the drag chains from the x gantry. Mine were trapped inside after I had already assembled the gantry so yeah…that was fun xD
CS has been pretty good so far in terms of answering any questions I’ve had!
My first project was a rudimentary cutout for a CR box, albeit only the top and bottom plate. I’m moving on to an interlocking design that will allow for much easier replacement of filters and more importantly, without duct tape. I will then progress on to some basic home furniture for the kids. Once I’ve gotten the hang of Fusion 360 and how the machine operates, I’ll then be moving on to a longer-term product development cycle while I continue to make small household items and videos.
Brad Shelton (verified owner) –
I can’t say enough good things about the AltMill MK-2 4X 4 CNC machine. Assembly is a breeze. Integrated legs, beefed up extrusions & drive screws, along with linear rails make for a stiffer machine. It’s a major step up from the LongMill MK-2. Having a 4 X 4 cutting area is great. I just wish I had room for the 4 X 8.
Waldron Newell (verified owner) –
Once I was able to work through the controller issues the machine is everything I had hoped for.
Nicholas (verified owner) –
I had setup issues that were my fault for not unpacking everything upfront, but the accuracy and ease of use of the Altmill is fantastic.
Bryan (verified owner) –
I’m absolutely loving my AltMill MK2 4×4. Assembly was straightforward and easy to follow, even from unboxing to first power-up. The build quality is phenomenal—everything feels solid, precise, and professionally engineered. You can immediately tell this machine was designed with durability and performance in mind. It runs smoothly, accurately, and inspires confidence with every cut. I couldn’t be happier with this purchase and would highly recommend it to anyone looking for a high-quality CNC machine.
Luis Rattia (verified owner) –
I am very happy with the altmill. It 9has a noise while is moving in the Y axis. I don’t know it is normal. I wiil contact you
James (verified owner) –
Upgrading from a Longmill, both machines are very good.
Anonymous (verified owner) –
One of the best CNC I’ve purchased
David K. (verified owner) –
great product and fairly easy to learn for a newbie like myself.
Mike Mayo (verified owner) –
I experienced issues with my machine, and after some troubleshooting with Jason, we narrowed it down to either the VFD or the spindle. Jason promptly sent a replacement set that included both. It turned out the VFD was the problem, so I replaced it, and Jason advised me to keep the spare spindle in case I ever need it. Excellent customer service!
Adam Filipowicz (verified owner) –
Good overall, some minor issues
Law (verified owner) –
Best single investment into my shop so far.
Greg B. (verified owner) –
So far so good. Setup was a breeze. I had a couple questions and customer service was very helpful. The cuts I have made so far the machine is very responsive.
THOMAS MYERS (verified owner) –
I’ve had some difficulty from either my computer or with the control board. I’ve ordered the Gcontroller to see if it will make a difference. The Y1 cable was defective but replaced rather quickly. The touch plate sometimes doesn’t touch off on the end mill and will actually push the plate as much as 1/8″ even though I’m holding it.
DON ALDRIDGE (verified owner) –
Don’t really have a rating for this yet because I haven’t had a chance to use it yet, and here’s why! I ordered the Altmill back in early September and was pleasantly surprised when I started receiving box’s in less than two weeks, that is all but one lonely box which after research was the T-track clamp set. I contacted Sienci labs with a response that this was out of their hands and I need to follow up with UPS. According to the tracking the packaged had made it all the way to Oklahoma City but never arrived, later the tracking message was “package delayed”. I was convinced that the package was lost but you wouldn’t agree with that until a message from UPS stating that was received. Well, I just received the package Wednesday November 19th, after you finally decided that the package was lost and sent me another package. As for as I am concerned that is not the best customer service, what you should have done was after two or three weeks of not receiving the package you should have sent out another set of T-tracks and if by chance the original set did show up I could have easily returned them to you or you could have filed a report with UPS, that way I could have already been using the Altmil, but no I am just now starting to install the T-tracks this weekend and hopefully I will get to use the new Altmill MK2 soon. I have never had a CNC, and I am sure this is a great machine, but I am very disappointed with the customer service.
Frank J. (verified owner) –
I have a few years experience.
Altmill was easy to assembly.
Had a couple of hiccups getting the software going, but tech support was excellent.
Humidor, plaques, cutting boards, cards, custom bars etc.
Todd Lindstrom (verified owner) –
I feel the price is reasonable
Sean Tynan (verified owner) –
Really happy with the increased working area. Some small bugs.
Peter C. (verified owner) –
Great assembly instructions. I upgraded from a Shapeoko Pro xxl and Altmill is a 100% better; more rigid, larger, faster, more powerfull motors, and Gsender is better operating software.
Blake B. (verified owner) –
Easy setup and no issues running it
James Cavanaugh (verified owner) –
I don’t think it was overpriced