My printer was having problems clearing other glass hold down clips so I fabricated these out of scrap aluminum bar. These clips use a hole drilled in the wooden plate under the build plate of all Printrbots to clamp down the glass and stay away from the print head.
CAUTION IF DONE INCORRECTLY THESE CAN BREAK GLASS. Standard glass handling rules apply. Dont over tighten these clamps.
I didnt make sure the other bolt beside the clip(seen above the clip in the picture) was lower then the heater pcb and when i tightened the clamps down the glass cracked.
Be sure to check for a flat surface without any bad bumps that could crack the glass when it is tightened down.
These clips were fabricated using only:
- Drill bit
- Bolt Cutters
Cut the bar stick to rough shape using whatever tool you like. I used a small pair of bolt cutters because they were the quickest.
Mark the horizontal section of the clip and bend that to length leaving any extra in the vertical section. This will be cut to size to match the height of your build plate depending on what it is made of.
Before trimming the vertical section to length, make the taperedrim t lip on the horizontal section so that it will clear the nozzle. There is no critical dimensions to this taper. Now trim the vertical section a bit long and file to size.
Clean up all surfaces with a course then fine file and drill the bolt hole near the front for more clamping force.