End of print: Move Z out of the way
Hi all,
at the end of the print, I'd like to move the print head out the way and at least 8 cm above the bed so it doesn't spill directly on the bed when I preheat it next time or change filament. How could I do this safely?
- If I do an absolute move to Z 80 mm, it would crash into my print if it would be higher than 80 mm.
- If I do a relative move Z +80 mm, it would crash (?) into the Y upper limit of the printer
So I'd like something like... move relative 10 mm above current position, but at least 80 mm above zero and maximum 200 mm above zero. How could this be done? I don't see G0/G1 supporting this.
Thanks, Martin
- Martin
Re: End of print: Move Z out of the way
Maybe move to an absolute 200 (assuming you don't print anything larger). That seems safe in all cases.
Any advices given are offered in good faith. It is your responsibility to ensure that by following my advice you do not suffer or cause injury, damage or loss. If you solve your problem, please post the solution…
Re: End of print: Move Z out of the way
this is what I use and it works great so far.
in octopi this is my post print code. Note: I did not come up with this myself. Someone had posted this, or something similar and I grabbed it.
G90; Set to Absolute position
G0 Z205; move z axis up to 205
G28 X; home X axis
G1 Y150 F5000; move part out for inspection
M104 S0 ; turn off extruder heat
M140 S0 ; turn off heated bed
M106 S0 ; Turn off fan
M18; Move Freely
- 1st "printer" TIKO 3D
- 2nd PRUSA i3 MK2S with MMU v1
- 3rd PRUSA i3 MK2S
- 4th PRUSA i3 MK3 with MMU v2- 5th PRUSA i3 MK4 (upgraded from MK3) with MMU v3 (upgraded from…
Re: End of print: Move Z out of the way
Thanks for your tips. Moving to absolute 200 has the disadvantage that for very small prints it moves the printhead up by near 20 cm, loosening quite a bit of filament on the spool. I got careful with this after one print failed with a tangled filament on the spool.
BTW it's the same with ropes for climbing. You never grab the end of the rope out of a heap - you might make a knot which gets you in trouble when belaying. Always keep the end separate. Somewhere on Thingiverse there are nice filement clips, and for the rope I have a rope bag with two loops for fixing both ends.
- Martin
- Martin
Re: End of print: Move Z out of the way
Martin, I haven't had any issues with the filament becoming tangled after moving the print head to the top, even when printing small objects. i have printed small objects, <10mm, followed by large, tall objects >150mm. Maybe i've just been lucky
I'm using the standard filament posts, but with a bolt thru the holes in case the spool decides to slip off, and I use the following filament guide.
https://www.thingiverse.com/thing:1657908
- 1st "printer" TIKO 3D
- 2nd PRUSA i3 MK2S with MMU v1
- 3rd PRUSA i3 MK2S
- 4th PRUSA i3 MK3 with MMU v2- 5th PRUSA i3 MK4 (upgraded from MK3) with MMU v3 (upgraded from…