hi. I have a problem with my bio printer. I have to offset z by hand, unless the nozzle wont stop going down until it hits the bed! what should I do? does anyone know?
That is more a firmware/printer issue. There should be an official solution to calibrate Z home position such that it works. Either a physical z endstop that gets moved or some firmware configuration that changes z height for homing e.g. stopping sooner. You normally just home Z as firmware needs to know z height so that must work. I know at leat one printer that actually uses the touch with bed as detection method which is actually clever if chaning nozzle/cartridge might lead to slightly different heights. Of course the nozzle must be stiff enough to survive such a touchdown then.
Manual method is just move Z manually and send G92 Z0 to tell firmware to take that as 0 and make sure to not home Z after that.
That is more a firmware/printer issue. There should be an official solution to calibrate Z home position such that it works. Either a physical z endstop that gets moved or some firmware configuration that changes z height for homing e.g. stopping sooner. You normally just home Z as firmware needs to know z height so that must work. I know at leat one printer that actually uses the touch with bed as detection method which is actually clever if chaning nozzle/cartridge might lead to slightly different heights. Of course the nozzle must be stiff enough to survive such a touchdown then.
Manual method is just move Z manually and send G92 Z0 to tell firmware to take that as 0 and make sure to not home Z after that.
thanks for replying. actually their is a bottom on my firmware to stop the nozzle and set the Z=0. But when I stop printer in the middle of printing, the Z=0 changes to the height that I stopped the printer on, so next time I have to set the Z manually. I don't know if its about software or firmware! can you help?
When firmware starts it normally assumes z=0 as it did not home so far. So that is normal. But then you just home and are at correct z=0.
What is the printer manufacturers official solution to homing? How this should work depends on printer I don't know your printer and even if you tell which - I have no bio printer so no idea how they solved it. So bette rask the manufacturer how homing is supposed to work and how to calibrate.
Comments
Manual method is just move Z manually and send
G92 Z0
to tell firmware to take that as 0 and make sure to not home Z after that.
What is the printer manufacturers official solution to homing? How this should work depends on printer I don't know your printer and even if you tell which - I have no bio printer so no idea how they solved it. So bette rask the manufacturer how homing is supposed to work and how to calibrate.