Tool with new axes or with extruders
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Hello,
I have a General quesitos about extruders and axes in the reprap configuration.
I want to habe a toolhead with varius steppermotors, that on each position of the x, y axes each should be in ist own position. The motors in the toolhead only move in a scale of more or less two rounds, but they move back and forwards. Is it better for the performance to controle the steppers in the reprap firmware as aditional axes , like U,V,W… or is it better to control them as extruders? Or is both the same?
Best Matthias -
sounds like they may be better controlled as additional axis that extruders. Do they actually extrude anything?
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No, they will not extrude, but regulate the output of paint through noozles.
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My quesitos is about and difference in the performance. The comands in the g code will get executed in the order they are written in the g code? It is in a cartesian printer there will First be moved the x and y axes to the position an than the z and the position of the extruders or the following new axes? Or is there and difference between extruders and aditional axes in the Order of execution?
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I wanted to write: My question is about any difference…
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that would be up to your slicer to control. The movement of the axes will be coordinated together.
So if your new axes are called U and V your slicer would have to generate a G1 F300 X100 Y100 V40 U50 move
Does that make sense?
It may also be possible to use them as extruders and specify a mixing ratio between them.
Eitherway, what you're after is a bit exotic. It may be a good idea to start a new thread with some details about what you're trying to achieve with a more specific title to see what others think would be the best way to proceed.
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Thank you! You wrote: „The movement of the axes will be coordinated together.“ Does it mean the axes are moving simultanusely and will reach the point at more or less the same time? Like the distance of the axes are coordenated together (i.e for example the speed is calculated depending on the different distances) ? Or each one reaches the point depending on the distance they have to travel?
And is there a difference how the movement of the extruders is executed und relation to the movement of the axes? I thought it would be depending on how rep rap interprets the gcode.
Thank you, if you can help me with my question. If not i will try as you said with a better tweet in an other seccion…
Matthias -
@mago If there is a G1 move command with multiple axes and/or extruders, then each axis and extruder will begin and end its respective move at the same time. It therefore follows that the speed of each individual axis or extruder will vary in order to keep it synchronised with every other axis.
Edit. For the purpose of movement commands, extruders are treated as if they were axes.
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Cool. Thank you. Now I understand.
