Z axis motion for SLS 3d printer

adhanabal

Hello all
Im building SLS 3d printer using due3 6HC v1.1,
i need to use 2 z axis motors which should individually move in opposite direction when printing,
the powder feeder bin motor should raise ,and print bed motor should go down, what is the way to configure this?

dc42

@adhanabal just specify two Z drivers in the M584 command, and reverse the direction of one of them in the M569 command for that driver.

adhanabal

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adhanabal

This post is deleted!

adhanabal

@dc42 I have a problem with that setup, sometimes i may need to individually operate z axis, for initial preparation, i guess with the setup you mentioned it is not possible to operate them individually if needed

dc42

@adhanabal there are 3 ways you can drive them independently:

If you need to operate them independently for the process of levelling, you can do that in 2 ways:

(a) Use the bed.g file to do that. You can use manual probing if you don't have a Z probe; or
(b) Use separate endstop switches for the two motors

If you need to operate them independently for other reasons, in M584 you can map a hidden axis (e.g. U) to one of them, or even map 2 hidden axes (e.g. U and V) one to each of them. Use the P parameter in M584 to hide the extra axes normally. When you want to move them independently, temporarily un-hide them.