Reply To: Length of conduit for the legs.

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Mike Cunningham

Legs = Usable Height – 13mm (.5in)

Conduit, Rails, Tubes, Pipes…

For most jobs, 4″ usable height is more than enough; any more will introduce excessive Z rail flex (entire center gantry flexes, making the bit wobble around). I made the mistake of making mine 9″, and have regretted it since.

Don’t forget to leave yourself an extra inch above your actual max height, for tool changes and variations in bit lengths.