Yes, I am uploading a zip file I have been playing with them some more and I find that the one that just extends a General brand digital T bevel with the laser beam is more useful and accurate. My little ball socket device is not very accurate. So now I just use the T bevel extender device. In tight places I clamp plates to the chassis and find other ways to use the T bevel. It is important that you line up the little laser with the targets, dots, you make on the chassis. I modified the extender by taping a wire to it to make it easier to line it up. I could make this part of the design but it would be too fragile (or I'm too lazy to go back and do it).
The resulting cuts are not perfect but I cut the bars a few mm too long so that I can grind them down to a near perfect fit for welding.
Of course you may have a different brand or kind of angle measuring device or different small laser pointer. But if you have a 3D printer you probably also have some kind of CAD system and should be able to design your own. I included drawings, STL, and Step files in the zip.
Attachment:
tail on laser.jpeg
Attachment:
files.zip