Just in time for Mars...
My son and I built this scope years ago. Ten inch f/5.6 primary from Orion (back when they still sold 10" mirrors), and enhanced secondary. The mirror cell and spider were homemade based on designs from Russell Porter's book. The tube is PVC 12 1/2" pipe. Focuser is an old B&L helical. The finder is a 4x rifle scope.
The mirrors are in great shape. Nice bright views and pretty good detail on the planets.
If you're interested, I'll try to answer any questions.
I don't want to ship this... but I'd be happy to deliver it within a reasonable distance from SAN ANTONIO TEXAS.