This is the latest on my scope setup.
Made a new mast from 12mm plywood 500mm high, needed the slot to go that high. Kept the same dressed timber boom, but extended the slot. The small piece of wood under the boom is a guide to maintaining the boom angle.
The boom angle is relevant to the facet angle and to get that I put my magnetic based digital protractor on the boom and roughly set it up. Because the protractor is heavy it has to come off and the small piece of wood is set at that angle. Then I can setup the boom accurately knowing I still have the correct angle.
Made a more robust base out of aluminium for the mast, made the fine adjustment setup at the end of the boom out of an old 7mm thick chopping board. Have a mill/drill so could mill all the parts so they were accurate.
Having it made out of light weight material makes it a lot easier to move it into position while just looking at the screen.
The white labels I’ve stuck on it let me mark homing positions for the facets and they will come off when the stone is finished.
Still using whatever I find laying around to make it.