making a double pole single throw switch

[Brianc]

I agree Alan. I should have packed up the disk but as I could tighten the church well without worrying too much about damage and the cut was only 2mm x 3mm, I didn't bother. Of course I set the piece in the chuck using a parallel between it and the chuck.
I used to use ACAD almost every day at work but I never mastered 3D. Did you?

Thanks for your kind comments, Trevor et al.