M220 Effect Question
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Consider the following code:
M220 S100 G92 E0 G0 E-0.95 F4500 M220 S50 G92 E0 G0 E-0.95 F4500
Will the second retraction be half as fast or the same speed? That is, does M220 apply to extruder speed by itself, as in a retraction?
It's logical that it would, but it would seem to have more utility if it doesn't. If retraction is carefully tuned (and you're not using firmware retraction), then slowing down the feed rate would screw it up, possibly badly.
But the documentation doesn't make it clear. I'm guessing that means it DOES affect it. I guess that means using firmware retraction would be better.
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@donstauffer I guess it depends on, whether you use firmware retraction or let slicer retract. The latter case might be influenced by M200, but the firmware retraction should not slow down.
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@o_lampe That's my best guess as well, that it would affect the G0 speed even though it's only a retraction. But I was hoping for a certain answer.
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@donstauffer
You could test it easily by allowing cold extrusion and use insane long retraction values in a gcode line or in M207 -
@o_lampe said in M220 Effect Question:
@donstauffer I guess it depends on, whether you use firmware retraction or let slicer retract. The latter case might be influenced by M200, but the firmware retraction should not slow down.
M220 speed adjustment is not applied to extruder-only moves.
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@dc42 Much appreciated!