CNC Transformation Timelapse

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Turned my $600 MPCNC into an aluminum-cutting beast with about $500 in upgrades! Full enclosure, HGR15 linear rails, T-track for workholding, cable chains, anti-backlash Z drive, and a Raspberry Pi for CNC.js.
* If you're new here, watch the first video showing how I built the original machine for $600: • I (Mostly) Printed a C...
* I will publish a discussion video about this build for anyone who wants to learn more about it: [Video TBD]
* 3d model for the HGR15 linear rail upgrade (please read the description regarding stiffness): www.printables.com/model/8358...
* The rails were cheap-but-good-enough Chinese rails from Vevor. About $90 for 2x 1,500mm and 4x glide blocks! Here's the link (not affiliate link): www.vevor.com/linear-guide-ra...
* The QQQ system (referenced at 07:40) is best suited for a table saw with a dado blade setup, but most of the cuts can be done on a single flat sheet using a CNC. You only have to flip two pieces and make a single dado on each to complete it, which I was able to do with a CNC.js macro. Original source: www.thisiscarpentry.com/2014/...
===TIMELINE===
00:00 Intro
00:48 Building the Dolly
02:22 Machine Transplant
04:04 Enclosure Part 1
05:34 Enclosure Part 2
07:06 Electronics and first cuts
09:03 Wood carving & epoxy
10:07 Aluminum CAM & Cutting
13:59 XYZ Plate Demo
14:25 Project Showcase

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Опубликовано:

24 июл 2024

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Комментарии : 11

@design8studio 2 месяца назад

Nice! Great job.

@philrader2016 3 месяца назад

Nice! Do you have more details about how you switched the gantry rails to linear rails. IE: do you have 3d files for the altered or additional 3d printed parts that allow the linear rails to be mounted instead of the round tubes?

@ObsessiveEngineering 3 месяца назад

Yes! You just reminded me I never uploaded those to Printables ... which I did just now. Here you go! www.printables.com/model/835864-mpcnc-primo-c-hgr15-upgrade-files

@rpjames11 3 месяца назад

Love the upgrades. How do the linear rails mount to the trucks? Do they provide a lot of rigidity over the EMT?

@ObsessiveEngineering 3 месяца назад

Thanks for watching! I just uploaded the files to printables so you can see for yourself. * www.printables.com/model/835864-mpcnc-primo-c-hgr15-upgrade-files I got the rails primarily for the stability. There was play in the original clamps and tubes I couldn't get rid of. And the rail fixed that. However, I mistakenly assumed that bare rails would be rigid enough, being solid steel. But when I was having trouble cutting aluminum, I got out a dial indicator and measured the deflection of 1m of each under load, and found the rail to be way less rigid than the EMT. However! I was able to attach piece of 2040 aluminum extrusion to each one and its stiffness became superior compared to the EMT. All the cuts you see in the video that turned out great were after I added those extrusions.

@RHill051 3 месяца назад

Love your video!! As someone else who is putting off a "transplant" I started over a year ago your video makes it feel a lot less intimidating lol I've been using ESTLCAM from day 1 and so far I've achieved some pretty great results on my Primo. I'm curious if you have some more info on how you set up F360 to work with your primo. I've attempted to do this a few times now and every times I just get stuck. Also I got to give you some huge props on making the 3D printed work holding for doing additional toolpaths on your part, That was genius!!

@ObsessiveEngineering 3 месяца назад

Thanks so much! I was able to use the flyfisher604 post-processor from github to get CAM working in Fusion360 (link below). It's been a while now, but I remember it wasn't super difficult to setup, and now I don't really spend any time thinking about the post-processor except it's annoying habit to default to "G92 at job start". That's all I have to remember to flip off every time I restart Fusion. - github.com/flyfisher604/mpcnc_post_processor It's a huge luxury to be able to do the CAM within the same software as the 3D design. It's very efficient to just switch between "Design" and "Manufacture" tabs within F360 and regenerate the toolpaths when I update something. The workholding is pretty streamlined, too, I can just add a new component to the existing project, and export as an STL for printing instead of manufacturing. Thanks for watching! Let me know if you have any other questions.

@ryanlewis4953 3 месяца назад

Very nice! No lid or dust collection?

@ObsessiveEngineering 3 месяца назад

Thanks for watching! I have another panel I put on top to totally enclose it, but I find it's not really necessary unless I'm doing MDF. As for dust collection, the MPCNC (default) only has 3" Z-travel, and I've eaten up 3/4" of that with the spoilboard between the T-tracks. So there's not a lot of room for dust collection stuff--it's possible but annoying to setup (and would be absurdly loud for my one-car garage to run all the time). The enclosure keeps 99% of the stuff in which makes it very easy to clean up after a job, and I can put the door half down to vacuum mid-job if necessary, so it's satisfactory without the dust collection.

@MrMorgalis 3 месяца назад

on time 13min 23 secs you position your piece. how to find the correct home to your part and beginning the job?

@ObsessiveEngineering 3 месяца назад

Good question! That black corner piece has a known position that I measured very carefully once and hardcoded into a G92/G10 macro, which I run whenever I install it. And I designed the 3D printed mount so that the center of the hole in the mounted part is exactly (+15, +15)mm from its lower-left corner. Ironically, I didn't even technically need that -- it's an XYZ-plate! I could just attached the leads to the plate and the bit, and used it to locate itself :)