Not quite. Micro-stepping increases resolution but not precision. Think of it like cutting a strip of paper into smaller pieces. I’m an analog machine and can cut a strip of paper into lots of tiny pieces that are roughly the same size. The number of pieces I can cut it into is the resolution, the accuracy of the size of each piece is the precision. A stepper motor is fairly accurate when moving to full step and half step positions but further micro-stepping does not increase precision, it does increase resolution (i.e. number of distinct positions) thus slow speed operation is smoother.
Accuracy/precision is all about the mechanics of the machine. There is only so much you can do with the electronics.
Meh. Could be better but not horrible… (I’m not sure “tolerance” is the word they really meant to use but I could be wrong)
0.01 inches is 0.254mm. Most home 3D printers usually print in the 0.1mm to 0.3mm range, though some can go quite smaller. The “record” is 0.01mm (10 microns), done on a MakerGear Prusa. I’ve gone down to about 0.03mm on my Ultimaker and I’m sure I could go thinner if I really tried. Another Ultimaker driver was doing single-step at 1/16 micro-stepping, which is just under 0.001mm (0.975 microns, iirc) though that wasn’t really “layers” - it was more of a segmented spiral that moved z one step at a time for each segment.
These numbers are more about nerding out and bragging rights - there’s no real visual/tactile benefit in going under 0.05mm - which is why “record” is in quotes. That and a print at 0.01mm takes about twice as long as one at 0.02mm. Any sort of real object can take up serious amounts of time at those resolutions.
They’re talking about keeping the price at/under $500 so it’s not nearly as expensive as it might look. That proably doesn’t include printed parts so if you don’t already have a 3D printer (or are not friendly with somebody that does), it’ll be more… I’d guess buying printed parts would be an extra $100-200 or so. Not free but not crazy.
If people would really like one of these but want it more to print with instead of tinker with, they should probably hold off a bit. There are a number of derivitives already and there will be a bunch of churn as evolution works out the details.
Lol, as it turns out, in the beginning of the FezCNC project the original target was to make a CNC milling robot for one of the first GHI competitions after the Fez family came out.
Yep, I have that problem too. One look at Rostock and the price point (and the MBI discussions of late) and I too was thinking I needed a 3d printer. I think I have no mad 3d design skillz but that’s a new challenge too.