Comments sought on new build: A CNC Router for RC Gliders and Planes

[njhussey]

Well disappointingly I only managed a few diet coke cans at work for shims...clamped one ballscrew to the side and ran the ballnut up and down a few times. The ballscrew has a good wobble to it where it's either bent at the ends or the machining is crap.



The drive end ballnut pad needed 1.2mm machining off and the NDE needed 1.2mm of shims...

One of the things that I didn't think through properly with regards to assembly was the X axis ballnut holders. I got the aluminium ones that are small and compact and they fasten from the underside/reverse so on my design I'd gave to take the gantry end plate off to remove them which is far from ideal. I've ordered a couple if MGD16 ballnut holders that can be fastened from the outside. I'll probably have to machine back the base so it is the same height as the current ballnut holders but that's no biggie with the mill.



Link below is flycutting the DE mount to remove the 1.2mm needed to make it fit.



Couple of pics cutting the Ali plate with the bandsaw and then squaring and machining to size the ballnut plates.





I ordered 2 x CSIMO IP-M controllers and 4 x Nema 34 8.7Nm steppers and 4 x 240V HV stepper drivers today...looking forward to those coming. 3 steppers and drivers and one IP-M are for CNCing the WARCO Major GH mill.

Tomorrow's ordering will be PSU components and belts and pulleys...