Re: Shafting

--- In CAD_CAM_EDM_DRO@y..., Gene <capper@i...> wrote:

> Im thinking of using 1.250 shafts to span 6' and 1.00 to span 48" on a
> cnc router. I am wondering if that's big enough or if I should go
> bigger? any thoughts would be appreciated. thank you.

Look in the files section for BEAM DEFLECTION.xls
this is an excel spreadsheet that will help you work out what diameter rails to use.

For those wanting to use square solid rails, they are roughly 70% stiffer than the same nominal round diameter.

Regards
Bob Thomas