Design help etc required with DIY CNC Router Design / Build

[John S]

Excellent - what did you change it to?

Two bacon butties, dill pickles and a side order of chips..............

[MikeyC38]

You can resolve the forces and moments on the bearings, I did it here:

http://www.mycncuk.com/forums/showth...inear-bearings-...

But it doesn't really achieve much except for deriving the obvious (space the bearings out as far as you can afford to, and minimise overhang) and showing what I said in my previous post.



Excellent - what did you change it to?

Changed to 20mm supported rails on the long axis - 1100mm, shorter axis (700) 16mm , Z (300) 16mm. Chai seems to be a good guy and altered the order on my request. The primary use for the machine is to cut hardwoods for guitar bodies and the secondary use is for carbon/glass fibre and light (6060) alloy. Aiming for a cut area of the machine of approx 900 x 600. My initial calcs for the maximum static deflection on the long axis, assuming a 30kg carriage of 0.12mm. The supported rail should stiffen this - but I could be wrong.

Thanks for the link - I'll examine this in more detail tonight

[MikeyC38]

Two bacon butties, dill pickles and a side order of chips..............

Hi John S - If only! only allowed 1 bacon butty a week on my diet!! -:)