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extruder as 4th axis

Posted by scancool 
extruder as 4th axis
April 16, 2019 10:20PM
has anyone used one of the secondary extruder as a 4th axis?
if no one has done it, the marlin code is pretty big which files I should be looking into to make this modifications?
I will like to add endstop to one of the extruder to make it a 4th axis
Re: extruder as 4th axis
April 19, 2019 08:18AM
Why would you want a 4th axis? That would over-constrain the system
Re: extruder as 4th axis
April 19, 2019 08:49AM
Quote
Genesys
Why would you want a 4th axis? That would over-constrain the system

You seem confused. A 4th axis is not the same as say 4 mounting points on heated bed....
Re: extruder as 4th axis
April 19, 2019 09:53AM
No I’m not confused - if you move in 3 dimensional space with 4 axis, your system is overconstrained and may jam
Re: extruder as 4th axis
April 19, 2019 10:57AM
4th axis is normally rotation, eg the bed may rotate around Y, so you can print on the side of things..

On 3d printers It can also be a Dual independent X axis, or real physical bed leveling with multiple Z axis....

not over constrained at all..

Edited 2 time(s). Last edit at 04/19/2019 11:18AM by Dust.
Re: extruder as 4th axis
April 21, 2019 06:09PM
I'm working on a robotic arm, I want to use this firmware to control it.
Genesys regarding 4th axis 3d printer this is what Dust is referring to
[youtu.be]
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