3Dtje buildplate holder (non adjustable)

### How?
I was looking for a good printbed for my 3Dtje mini printer and came across mirror glass tiles. I found them pretty cheap at ebay with the perfect dimensions of 100x100x3mm for my printer. Just print the "3Dtje_Tisch_Halterung_v3_merged.stl" and assemble the 3Dtje like you would normally. You can access the glass tile from both sides with the little gap in the border. The other files are only needed if you want to modify any settings. I suggest printing it with the plate facing down an