The arch can be 5 mm as well. Just where the bolts go make it

thicker.

Paul Lamar

Paul,
I knew you were going to say this!!-you like to push my untrained mind

hard

Paul - I don't think I can even get a radius on 5mm, but will try.
BTW,  it would be very easy to get the bolt holes slightly off, what I
intend to do is go to an engineering shop and have the pattern drilled
precisely and then build the standoffs around the holes.
So Paul - what is the best drawing you have in CAD that I can give them
please, no doubt they will have some computer driven mill.
George (down under)

I don't have a good cad drawing but it would not be hard to program
this. Just ignor the starter on the bottom.

Paul Lamar

Paul,
Thanks for the drawing, that seems pretty clear.
Now do you think you could do one in metric - just joking!
George (down under)

 
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