Lifting extruder E1 0.5mm
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Looks like Cura extruder starting code (absolute) has effect only in the beginning of the sift (E0---E1), It moves Z immediately back. If I use relative coordinates then the printhead runs at the opposite corner...outch!
Maybe it is better to provide an actuator to both hotends. -
How much travel do you have on E1? I think what you want to do should work, but I'm not sure of the best tool change code to achieve it.
How is E1 lifted? What is the mechanism? Does it have its own axis? Is it a servo?
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Here´s the mechanism from a recycled cd-rom station.
- filament input
- moving sleigh
hotend is not in this picture, but I use cr-10 style one.
Now the interesting part is how to move the hotend. I think I open a new thread for that. It uses the E1 steppermotor.
The filament pushes the nose down when extruding.
The movement is around 1mm. I want to keep it as small as possible. Of course this needs many details and a lot of tuning, but I think I can make it work. I have not seen this kind of mechanism being used, so I can call it my invention. If somebody has seen this kind of solution before, please tell...
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@Pertti said in Lifting extruder E1 0.5mm:
It uses the E1 steppermotor.
What axis have you assigned it?
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No axis at all. The moving force comes by the filament. When extruding, the pressure pushes the nozzle down.
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Axis E1 is signed to the steppermotor E1
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So it's a passive system based on if it's extruding or not?
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@Phaedrux -Yes.
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That's very interesting, but I'm not sure how to make that work. Your original post talks about using the Z motor to move it, but I don't see how you mean to use that.
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Actually Z motor is used in the first place for "negative z-hop" for the E1 extruder, which is static. Anyway I quit that idea and moved to make both extruders dynamic. I completed the idea with 2 pc Linear Guide MGN12H.
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@Pertti
Here's an example print of 6 cm x 6 cm