Quote Originally Posted by Mad Professor View Post
Thanks for your feedback.

So what you are saying is that my design is no good, and will not be upto the job.

I was hoping to reuse the unsupported rails, and bearing blocks that I already have.

What sized supported rails would you recommend?

Thanks for your time.
Not saying it's no good but it's not the best it could be and with a few changes could be made stronger.

Supported rail is far better.!. . BUT. . If you have them then just change the design so the rails are on the front plate and bearings on the rear.

You won't gain the extra support to front plate supported rails give but to be honest this is minor and secondery to the gain from less cutter flex thru the proposional extension not acting like constant length spring board which is what your design allows. The 20mm plate will be strong anyway so IMO with these changes you'll be ok.

If you do go with supported then 16 or 20mm will be fine.