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You can find Cad models of parts like BK/BF bearings. They are standard dimensions across manufactures with only slight cosmetics differences so provided you get right model they will be ok. If can't...

Ok Greg the master has turned up. Take notice, I don't think he will mind copying it is easier that doing it for one's self:joker:

So look very carefully at the pics you will learn a lot.

Gregor not sure you have done enough checking etc to make sure things will fit correctly.
I know for fact how you have it designed now the ballscrew won't fit on the gantry without lot of messing...

Yes because the ball nut is in the centre of the z plate you could also put the screw on the back but its up to you.

edit When you order the screws make sure you make the F length about 30mm ...

If you have not bought your screws yet the Y screw could be made shorter and the pulley and the motor could be inside the gantry as you won't be using the full length of the screw.
Are to still at...

Why have you gone for the square shape on the gantry sides as your previous post you shows it different. It might be better to show the z axis in more detail as you will need a cutout on the back...

Evening all. For anyone interested in milling Aluminium with a hand held router as I have been doing in this build I've made a little (very amateur!) video of the process:
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Greg If the am882 drives are in good condition then they will be fine . 1610 on X and Y. 1605 on Z nema 23 are good as long as you get them with low inductance the 8 wire version. Zapp or...

I certainly like the double ball screw idea and placement, what i dont like is the possibility of adjustment and the fact that both end supports are enclosed by the frame. Make sure the ball screw...

I have 15mm rails on the Z and wouldn't do it again - more like 20mm. Much stiffer and give better spacing to fit all the parts in.

I've always gone with 600mm max width for single ballscrew,...

Greg From what I believe HRG15 on the Z is more than strong enough but the problem is that it would make it very tight on space for the ball nut and you would have to cut more out of the plate to...