MPCNC making some clamps for me

[@sparks-tech]

Nice. That’s great. Thanks for sharing.

[@tonyrichmond9428]

Thanks for the comment!

[@CabooseLoL]

I’m new to CNC and recently built an MPCNC. I’d like to know how you managed the 2 pass, 2D profile cut? The only way I can think of achieving that would be in adobe illustrator, creating a stroke around the shape that is slightly larger than the bit I’m using, and doing a pocket clearing instead of 2D profile cut. But I suspect that isn’t what is going on here haha

[@tonyrichmond9428]

You're correct....not what's going on here. Most CAM programs make it trivial to set a maximum depth of cut and will calculate the depth of each pass for you. They also make it easy to cut an arbitrary distance away from your part (roughing) or right exactly to dimension (finishing). You can combine these in different toolpaths, or with some (like fusion360) it's just another option to set and have it all in one toolpath. I did the latter here, using fusion360, with 2 rough passes and no finish at all depths except the final depth, which was finish only. This gives me room to let the chips fly out as it gets deeper, and the last pass has very little load on it with a cut that goes from top to bottom all at once. Estlcam is very user friendly (if somehat more limited), so have a look at that one too. Fusion 360 is notorious for having too many options when you're just trying to wrap your head around CAM, but it's that and the sketch tools that keep me on it. Good luck with your CNC!

[@CabooseLoL]

I really appreciate your response! I’m currently learning Fusion 360. I started with Vectric Aspire, but it seems kinda limited on tool path options.

[@tonyrichmond9428]

@@CabooseLoL I appreciate your question! If you see any of my other videos, it'll be pretty obvious that I'm trying to remind everyone that they aren't the only ones struggling to get this stuff under the belt! Fusion has it's deficiencies, but it's pretty good at a lot of things. If you are a student, be sure to check out their student license. Full version, zero dollars. Or if you have a small business (or would like one) make sure to apply for their startup license (also 0 dollars, but some business qualifications. Took a couple days to get approved, but that's what I'm using right now.

[@tonyhooper8082]

Looks good. Would you mind sharing your feeds ,speeds and router bit type please?

[@tonyrichmond9428]

Most of the adaptive work was 20kRPM, 110 IPM, 0.03 stepover, .28 DOC. Contouring at 20kRPM, 40IPM, 0.06 stepover, 0.05 DOC. Single flute Kyocera endmill (absolutely LOVE these). Hope that helps!

[@tonyhooper8082]

@@tonyrichmond9428 Thanks Tony

[@NathanCroucher]

Nice one.

[@tonyrichmond9428]

Thanks!

[@yopi1496]

looking solid, whats your printed part material?

[@tonyrichmond9428]

Regular ol PLA, no additives. The cheap stuff, $8.99/kg on sale.

[@ShilleR2044]

do you use stainless steal tubes?

[@tonyrichmond9428]

For the gantry, yes

[@lukegilliam3139]

What spindle is that?

[@tonyrichmond9428]

It's a 110v 2.2kw. I don't recall the brand, but I smoked the bearings in that one and had to replace it.