Ideal microstep setting
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It might be of interest - I've used these in my Mill (with Mach3). They accept Step/Dir inputs and once the PID's are tuned, give impressive results.
http://www.cncdrive.com/DG4S_08020.html
Compared to most other Servo controllers, they are very good value!I converted a 4 Axis Bridgeport Interact 1 Mk2 - and can achieve 100mm/s. It's not bad considering the table has to weigh quarter of a ton!
Maybe a bit OTT for a printer - but if you want high speed, high precision and near silent operation, maybe not!
I've tried 3D Printing on it, attaching a hot end to the spindle and printing on to a (cold) sheet of glass, covered in tape on the bed - and the results were pretty good. I only ran 50mm/s but the prints were largely free from motion artifacts except where it needed high acceleration. Unfortunately, I need the mill as a mill - otherwise I'd be tempted to build a more solid implementation (heated bed etc). It did show that a rigid structure with zero backlash and servos could pay dividends in quality.
Si
Si
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Which servos do you use with those boards? I've never used a servo before, so I wouldn't know where to start looking. Your mill sounds pretty cool. I want to make something like that some day.
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Clearpath, not for your typical printer though. They are pricey but the SDSK known as step direction stepper killers are drop in replacements for steppers. The caveat is your build needs to be large to make them worthwhile as they are Nema 23… I have a build I am planning around them which will use several independent XYZ carriages that move over a large 3x 5 foot fixed build plate using 3to1 gear reduction on linear profile rails and ball screws
