Precision adjustable Z switch mount.

by Addidis, published

Precision adjustable Z switch mount. by Addidis Apr 9, 2013
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This mounts to the normal Z switch mount and allows you to adjust it with precision. I use a clamp to jam a nut in the small piece. With a screw to get it lined up just right. Then a nail file to make them fit , but snugly inside each other. The bottom support was added after testing mine at .4 infill without it and observing twist. This prevents twisting which would introduce error. The little holes may need drilling, the big ones should be fine for the spring screw. You want it to be really tight so vibration wont make it turn. Print at 1 infill.

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Happy to report , although lock nuts on the top of the bed was a serious pain to set the first time because you have to capture the bottom with a wrench to adjust it while it is hot , once I got it set it has been turn on the printer, warm up, hit print and watch flawless first layer after flawless first layer. I havent had to touch it since I set it.
Rock solid Z home Achieved.

This is working surprisingly well. My home possition is somewhat reliable now. Before every run it would be off and need re-leveling. Im going to secure the bed with lock nuts tomorrow and that should make the Z home rock steady.