I've confirmed that this works fine with the Thrustmaster TH8A shifter using the provided clamp. It's secure enough, and positioned well enough, that I'm not going to bother making and reprinting a hard-mount plate for it. Much better shifter than the G27/G29/G920 variants by the way. This was designed to be assembled with either M3 screws with 5.5mm nuts, or M4 screws and no nuts. I did not try this with M4 screws as I have a lot of M3's around used for quadcopters.

LOWDOWN SHIFTER PRODUCT - LOWDOWN SHIFTER

I got the rubber sheet (To wrap around the frame to protect it) from work and also changed to nuts to nyloc. Can hopefully be printed on printers with a smaller build volume. If it were a one-piece assembly, it would not fit on the print bed of my Qidi Tech 1. In 2 pieces, it fits with plenty of extra space. I could make the shifter surface a good deal larger.The surface is not wide enough to use the rear clamps effectively, but you will want to use the front screw clamp. I tried to reduce the material requirement for the surface by minimizing the size where possible. Built by adhesion & high pressure in to a Tri-layer sheet material. Aluminium on both external surfaces with a hardened compressed ABS plastic core. Creating a product that is very light, extremely strong, durable & rigid. For some reason, every time I make a change to this design, I need to execute the Combine-Cut functions again for the part<>Screw_Hole_Tools before exporting to STL. I'm not sure why, but the countersink holes always disappear on me. In combining two parts of the material via lamination, we create one 6mm desirable interface with various supreme finishes.