After completing my steam engine during the stay at home period, I decided to make a couple of bits for my etx125 while waiting for my asi224 to arrive so I can dabble in a bit of planet astro photography without breaking the bank.
I decided to make a compression adaptor with 35x1mm thread to attach at the scope end and the the other end is 42x.75mm male with matching nut so I can screw straight to it or use the nut and delrin compression ring to attach standard 1 1/4 inch diagonals and such. Seems to work great, clamps really well.