So, time has come to build the base.
The most common plastic I was able to find was HDPE cutting board:
5.5cm x 7cm and 7cm x 9cm:
Stack and clamp for drilling: with the L-bracket:
On the underside I needed to make a countersink for the M8 x 30 bolt head:
Then drill as many holes with an M6 and use an M8 on the side opposite of the countersink for the M8 (top) to create countersinks that will be filled with BLACK silicone and a 7cm x 9cm x 10mm glass will be:
It should end up looking like this from the glass side (bottom):
Time to drill the L-bracket for the two M8 bolts and the M3 bolts that will hold the build base to the THK Linear block:
The end result will look like this:
Seems to be stuck well, but the question is : Will it come undone under the forces needed to lift the cured resin off the VAT?
We shall see.