Fine Adjusting Z=0 Switch for 3D Printer
By Mark_Rehorst
Free
It's free to download
Fine Adjusting Z=0 Switch for 3D Printer
By Mark_Rehorst
Free
It's free to download
Information
Fine Adjusting Z=0 Switch for 3D Printer
By Mark_Rehorst
at 2024-05-08
This Z=0 switch uses a lever mounted on a HDD bearing to allow very fine control of the Z=0 position in a 3D printer. The lever effectively multiplies the adjuster screw TPI by about 8, making a 32 TPI screw look like a 250 TPI screw. One full turn of the screw will move the print bed about 100 um.
There is a small magnet on the end of the lever to keep the lever in contact with the adjuster screw.
Video of the operation here: https://vimeo.com/208080500
Technical
I used ABS to print the switch components. It will require some #6 plastic screws and a #6-32 adjuster screw. Get the bearing from a HDD. The magnet was one I happened to have in my parts box.
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Letchy
over 5 years
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Former electrical engineer, I became a dentist in 2011. I designed and built my printer, Son of MegaMax, using surplus machine parts at the Milwaukee Makerspace. My newest printer design, Ultra MegaMax Dominator, is a coreXY machine with a 300...
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