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tevo_tarantula_i3_3d_printer [20.03.2018 23:49] – [Z axis stabilization] Pascal Suter | tevo_tarantula_i3_3d_printer [09.12.2018 16:52] – [Setting the Z Axis Sensor offset] Pascal Suter | ||
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In order to get the first layer to a) stick to the bed and b) not be too flat the Z axis needs to have a very precise 0 point. However, the Z probe usually needs some fiddeling until it is mounted correctly so that it won't interfere with your print but still reach the print bed before the nozzle does. So the only viable option is, to configure this in the firmware. Again we will use the eeprom to save that setting. Here it even makes sense, because every time you remove that sensor, i.e. after you have printed the fan duct and mounted it, you will need to play around and adjust this setting. | In order to get the first layer to a) stick to the bed and b) not be too flat the Z axis needs to have a very precise 0 point. However, the Z probe usually needs some fiddeling until it is mounted correctly so that it won't interfere with your print but still reach the print bed before the nozzle does. So the only viable option is, to configure this in the firmware. Again we will use the eeprom to save that setting. Here it even makes sense, because every time you remove that sensor, i.e. after you have printed the fan duct and mounted it, you will need to play around and adjust this setting. | ||
- | In order to adjust the Z axis, i first sent G28 to auto home all axis, then G29 to autolevel the bed, i then used '' | + | In order to adjust the Z axis, i first sent G28 to auto home all axis, then G29 to autolevel the bed, i then used '' |
- | M851 Z-3.1 | + | M851 Z-0.6 |
- | this sets the offset to -4 and therefore allows you to go 4mm lower with the Z axis. | + | Now run '' |
- | once you feel some resistance on the paper, pull it out from underneath the nozzle | + | |
- | M206 Z0.2 | + | once done, save your settings |
M500 | M500 | ||
- | will set the z offset to 0.2mm LOWER than the sensor' | ||
Now make sure that your Slicer adds these Gcodes to the begining of every job, to make sure your bed leveling has been done: | Now make sure that your Slicer adds these Gcodes to the begining of every job, to make sure your bed leveling has been done: | ||
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G29 ; auto bed level | G29 ; auto bed level | ||
Now print something and see if you are happy with your first layers | Now print something and see if you are happy with your first layers | ||
- | |||
- | First set the Z probe offset to 0 and run Auto Home and Auto bed level | ||
- | M851 Z0 | ||
- | G28 ; auto home | ||
- | G29 ; auto bed level | ||
- | now jump to the first auto bed level coordinate that was probed but keep the Z axis above 0 | ||
- | G1 X50 G1 Y0 G1 Z10 | ||
- | Hold a piece between the extruder nozzle and the printbed and slowly lower your Z axis until the extruder touches the paper and you can feel some resistance.. | ||
- | G1 Z-0.1 | ||
- | G1 Z-0.2 | ||
- | .... | ||
- | |||
- | In case you can't lower the Z axis any further, use the last offset that worked and enter it as your z probe offset. i.e. lets say you could get to | ||
- | G1 Z-2 | ||
- | set the offset to -2 and auto home again to apply the offset: | ||
- | M851 Z-2 | ||
- | G28 | ||
- | then try again. if you still can't reach the bed, add your last working offset to the one you have set and set it as the new offset.. so let's say you made it to -2 again but did not yet touch the bed, thenn you would set your offset now to '' | ||
- | |||
- | once you have determined the negative Z position, add this to your last set offset and set it as your new offset. let's say you have had to iterate twice with a offset of -2 and you added another -1.3 to get to the paper, you can now set and store your new offset of -5.3 like this: | ||
- | M851 Z-5.3 | ||
- | M500 | ||
- | Send your Z axis again away from the printbed using | ||
- | G1 Z10 | ||
- | and you are ready to send your first printjob :) | ||
by the way, you can also set this offset in the marlin menu under '' | by the way, you can also set this offset in the marlin menu under '' | ||
+ | ==== Bed Leveling VS G28 ==== | ||
+ | in older versons of the Marlin Firmware it was not possibel to enable '' | ||
===== Slicer Software and Settings ===== | ===== Slicer Software and Settings ===== |