bottom bracket locknut wrench (openscad)
di renschler
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A wrench for loosening the locknut on older style bottom brackets.
I printed in PLA at 70% infill. First I sprayed locknut with some WD40, then I took a screwdriver and placed it in one of the notches and hammered a few times (in the direction of loosening the nut). Then I used the wrench.
I snapped one wrench that was printed at 20% infill, and then decided to do the WD40 + screwdriver + wrench approach.
You should print the test stl first to see if the dimensions work for you. If not I've included the openscad file so you can tweak everything.
These videos were helpful:
https://youtu.be/1BrVjDFqotE
https://youtu.be/aMSZ8Z8i-KY
I printed in PLA at 70% infill. First I sprayed locknut with some WD40, then I took a screwdriver and placed it in one of the notches and hammered a few times (in the direction of loosening the nut). Then I used the wrench.
I snapped one wrench that was printed at 20% infill, and then decided to do the WD40 + screwdriver + wrench approach.
You should print the test stl first to see if the dimensions work for you. If not I've included the openscad file so you can tweak everything.
These videos were helpful:
https://youtu.be/1BrVjDFqotE
https://youtu.be/aMSZ8Z8i-KY
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