Thanks, GR5. I don't think it will be more accurate, but I do think I can make it a lot easier and faster to adjust. I want to use my UM for low volume production of a complex part that cannot be easily made by using conventional molds, so I'd like to be able to both level and adjust Z rapidly. I just finished my HB and added 3 position thumbscrew leveling with no springs. I also want to be able to level without mashing the nozzle into the build platform. I've got some ideas on how to do that, using conductive pieces so I can hear a beep when it's level.
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gr5 2,224
google optical z axis ultimaker as I know other people have done it.
UM did some tests and found it to be accurate and repeatable to amazingly small amounts. I think maybe .00001 mm? That seems impossible but I think that was it.
I've never moved mine since the first day. I only move the screws. Besides my bed tends to shift over the course of a few days and it shifts in a strange direction - the front edge droops and the back edge tends to go *up* somehow. But mostly just the front edge droops. So I don't see how an adjustable or more accurate switch will help you.
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