Thanks for your reply.
Ordered a Jpoint red dot sight with mount. E. Arther Brown company in Minnesota (
www.eabco.com) has Jpoint sight WITH choice of mount for $229. Seems to be a nice sight.
You are correct that Docter and Jpoint are not related and their parts are not interchangeable. One of these companies has done a good job of copying the other's red dot sight design, even offering the same accessories.
The Docter weaver mount would be nice because it could be moved from gun to gun, maybe even try it on a muzzleloading pistol. STILL can't find any domestic US store that has the Docter mount in stock.
As for me fabricating gun parts, let's just say there is enough ugliness in the world already. Duct tape, 2by4, caulk and nails would not make a very pretty mount.
Again, thanks for your help.