Gantry advice please

[Crunch]

I think the majority of people on here use open loop steppers or servos - don't forget you can get open loop stepper drivers which can very reliably detect missed steps and feed back an alarm signal.

Hi Andy
Thanks for information,
Ive been following your build

Regards Paul

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[AndyUK]

I been following your build

Thanks! :) I too started with the idea of a steel box section gantry, but then temporarily lost access to the Bridgeport and milling the faces became an outside job. Mild steel isn't near straight enough to mount rails to directly.

Once I did the deformation calcs and realised HD aluminium profile could perform just as well, and was an aweful lot easier to build with, it tipped the balance.