I’m planning to use a separate spoil board on top of the base every time, and the clamps grab from the outside, so ideally I’d never cut into the actual base board of the machine, assuming I don’t screw up.
But I’ve never done this before either, so who knows?
I see a lot of finished machines that seem to have a uniform grid of holes into which hockey-stick-looking clamps are screwed down with machine screws (see attached for example). It seems to be a standard way of doing hold-down clamps, but I can’t find anyone describing the exact construction.
Here’s my supposition based on the picture — is this…[Read more]
I wrote a customizable tool holder model in OpenSCAD, but I didn’t end up testing it because I found a Thingiverse model for my exact tool (a crappy Harbor Freight cutout tool). See here if you want to give it a shot.
Better yet, one of these, that way you can extend any bit you need (even a hex-shank drill bit). I keep them in 3″, 6″, and 9″, and can combine when I need any truly obscene length.
Also also rotated my feet in the manner shown — the way the corners are notched makes it quite natural.
Tyler Bletsch replied to the topic Any reason an MPCNC couldn't be built near vertically? in the forum Assembly 1 year, 7 months ago
I just tipped my machine over to test it. The axis does indeed slide down under gravity, but it does it slowly and smoothly. When energized, the steppers had no issue moving where they wanted. I didn’t do a job, though — just a “does this explode” test.
I might try it later if space gets tight. My build is probably mediocre — it’s on a sheet of…[Read more]
Tyler Bletsch started the topic Any reason an MPCNC couldn't be built near vertically? in the forum Assembly 1 year, 7 months ago
I’m finishing my machine, but I’m always looking for ways to save space. I wonder — has anyone tried mounting the machine at something like an 80 degree angle vertically, so it could be mounted to a wall? I feel like the Y axis should still be able to lift without issue, and you need to clamp material in order to mill anyway, right? As a bonus,…[Read more]
If I can ask, why are you doing STL models at all? I’ve 3D printed a bunch but I’m new to CNC — my understanding is that STL are 3D models, so unless you’re trying to mill a surface or something, how do you do tool paths with a 3D figure?