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I designed this adapter because WABECO drill stands support drilling machines with 43mm Euronorm only. For these, a perfect and very robust machine mount is available. The Bosch Professional Bohrhammer from the GBH-2 series uses a larger size for mounting - and this is what this adapter supports.
The adapter uses existing screws from the regular machine mount and it uses the handle bar that comes with the drilling machine too. As a result, this is 3D printing only, no additional parts required.
While the adapter features a super robust design, it is certainly a lot weaker that the original part made from aluminum. So when using it, keep that in mind. The weakest part is actually Bosch's own second handle design that is reused here. So far, and focussing on drilling wood only, the adapter works nicely. Please see special printing instructions below.
Designed to be printed using a 0.4mm nozzle and 0.2mm layers.
Print the adapter with its side pointing down. The results in a proper layer orientation matching the strongest load. You can use support from the build plate, but that is optional and works fine without too.
To get extra strength, I printed it with 3 perimeters and with a 25% infill. A ticker than 0.4mm nozzle can be used to get additional strength.
Do not tighten the screws too much. Firmly, but not brutal. :-) The Bosch handle bar has no vertical calibration. To get perfect vertical holes, calibrate it manually.
The author marked this model as their own original creation.