i really am unsure as of right now. i should be able to keep them relatively inexpensive compared to others out there. it seems there is more of a demand for spacers made of G10, tomorrow i will look into how much material will cost me. i might just be making them of G10 and not aluminum. the G10 is in demand because of the low thermal conductivity which cuts down on heat
tonight i bought a single port gasket from autozone to get all the measurements off of. i have completed the AutoCad drawing and have brought it into Autodesk Inventor and made it 3D. its pretty close, it's within +/- .005" (standard tolerance)