I (Mostly) Printed a CNC Machine!

[@IowaKeith]

I made 2 sizes of the mpcnc several years ago. Definitely a wonderful machine.

[@StevePotter]

Great build! Awesome build video!!! I would guess it took more work to make the video than the MPCNC. Beautifully edited. Nice music.

[@allted]

I love the video! I would love to put that somewhere in the instruction page. Your price list seems pretty far under $600?

[@ObsessiveEngineering]

The MPCNC guy himself! Thanks for dropping by! You just reminded me I didn't finish collecting the info for that price list. I'll finish and update it tomorrow. Also I have a bunch of random things I designed I need to get up on Printables, like the electronics enclosure and the adapter pieces for regular-sized limit switches. Glad you liked the video. Feel free to link it from anywhere you want 👍

[@lylyluvda916]

I want to make this, but I’m wondering if I can make this larger. I’d just need to gat larger pipes and longer ribbon (and edit the code) correct?

[@johnoriente498]

Do you have plans or a link for the cutoff wheel? Is that 3d printed? TIA

[@barry99705]

Nice! Digging the Jackpot ebox.

[@ObsessiveEngineering]

Thanks! That's a parametric ebox that I designed and adapt for every one of my projects. I'll try to clean it up and get it on Printables. It's been crazy useful. It makes it very low effort to add a barrel jack input, power switch and cooling fan to every project. And wiring everything is so much easier when you can fold down the sides. I'll update the description with links when I get that posted (along with a few other small things I designed for this project) Thanks for watching!

[@design8studio]

Great job on both the machine and the video! I just subscribed.

[@octimus2000]

What bit did you use for the D carve? It looked like a 1/8 end mill??

[@anon_y_mousse]

You definitely need to get a deburrer so you can work those sharp edges faster. That final time lapse was the best. And are modern routers being designed to be easier to incorporate into CNC machines or is purely by accident that they're shaped in such a conducive manner for that purpose?

[@ObsessiveEngineering]

Interesting you bring that up. This particular router was the product of a collaboration between V1 Engineering and Kobalt, to create an inexpensive router for hobbyist CNC'ers like myself. See this article, which was my motivation for getting this particular one. www.v1e.com/blogs/news/kobalt-router-featuring-the-lr3 That said, I think a lot of routers already have the man cylindrical body, it's just that they also come with an attachment that clamps around it, which is what you're used to seeing. Glad you liked the video. It was a lot of fun to put together

[@Rohit-oz1or]

My mpcnc trucks aree rubbing with the pipe very often. As a result, movements are different on both sides. What could be the issue. I am using steel pipes with seams. Could their circular shape be getting distorted. Could there be issue with belt tension. How much tension is optimal and how you ensure it. Thanks

[@ObsessiveEngineering]

I actually haven't had any issues with it. I tightened them carefully before putting them on the pipes to make sure they could move freely but not too loose. As for the belts, I read that they don't really need to be very tight. In fact I think if they're too tight it could pull the corners slightly out of alignment. I just check they're a little firm. One thing I did was try to jog the axis in each X and Y and stop it with my hand. If the belts are tight enough, you'll hear the motors skipping which means the motor power is the weak point, not the belts. But if the belts are skipping first, they're clearly not tight enough (though I agree sometimes it can be tough to distinguish the two types of skipping). As for the seam, I could see that being a problem. There's not a ton of clearance around the pipe for the truck surface. Maybe the seam is rubbing? I don't know how significant it is, but you might be able to see by eye if you look straight down the length

[@Rohit-oz1or]

@@ObsessiveEngineering Thanks for your detailed insightful response. Really appreciated. I will try your suggestions. Some more input in the issue: The issue happens when the trucks are loaded. Standalone they are moving fine but when loaded and connected with the axis pipe, sometimes one or other gets stuck. Could it be due to one of the trucks moving faster?

[@jackcoats4146]

Do a bit more MPCNC stuff please.

[@jamiekawabata7101]

Nice!

[@M3S3RIASU]

👌🏻👏🏻👏🏻👏🏻👏🏻👏🏻👏🏻💪🏻

[@fullsendmarinedarwin7244]

Cool build but voice over explaining would be so much better than this terrible music lol

[@ObsessiveEngineering]

I was trying a new style that I felt could get the story across while also taking far less time editing. Obviously it's not going to be a hit with everyone. You might like my RatRig DIY 3d printer build series, which is a more traditional format, and made to be educational. 🤷‍♂️. Thanks for watching anyway!

[@fullsendmarinedarwin7244]

@@ObsessiveEngineering Thanks I'll check it out. I have just got into the 3D printer game, I've always wanted a CNC table router so going DIY might actually be feasible

[@ObsessiveEngineering]

Both the RatRig printer and the MPCNC were really fun DIY projects. But the RatRig is a premium DIY build that can take on the world. The MPCNC is a super-budget build. If you are budget-constrained and you'll primarily cut wood, MPCNC is clearly amazing value (and size is totally customizable). It seems worth it so far, though I don't have a lot of cutting time on it yet. I haven't tried cutting aluminum yet, I suspect my MPCNC can do it...slowly. I'll do another video on that when I figure it out. I'm hoping my choice of carbon fiber filaments will keep everything rigid enough. But if aluminum is a primary goal, I'd consider the PrintNC instead. That's my next stop if I feel like the MPCNC can't keep up. Here's the RatRig build series: kzbin.info/www/bejne/iJrYk3dmmcd5d5Ysi=I494nWi1KPX9T1ay

[@fullsendmarinedarwin7244]

@@ObsessiveEngineering Thanks for the detailed reply! I'll check it out now 😀