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Marlin & Delta, some questions

Posted by Genesys 
Marlin & Delta, some questions
April 19, 2019 07:59AM
A few questions about marlin & delta printer:

1. How do G33 and G29 play together? Which one to execute first and does the calbration of one affect the calibration of the other?

2. I have two hotends and one z-probe that are offset on the effector like so:

+——————————+
| . . . . . . . . . . . . . . . . . . .|
| . . . . . . . . . P . . . . . . . . |
| . . . . . . . . . . . . . . . . . . .|
| . . . H1 . . . + . . . .H2 . . |
| . . . . . . . . . . . . . . . . . . .|
| . . . . . . . . . . . . . . . . . . .|
| . . . . . . . . . . . . . . . . . . .|
+——————————+

The plus being the center of the effector.
How do I need to set offsets for hotend and z’probe in the firmware config?

Edited 2 time(s). Last edit at 04/20/2019 03:05AM by Genesys.
Re: Marlin & Delta, some questions
April 19, 2019 08:59AM
you only calibrate when you first setup the machine (well more if you don't trust your machine rigidness, or you change parts) .

you home at the beginning of every print.

edit: must be relative to the + on a delta

Edited 1 time(s). Last edit at 04/19/2019 11:26AM by Dust.
Re: Marlin & Delta, some questions
April 19, 2019 09:51AM
So how do I then set in my config the fact that my primary hotend is not at the center of the effector, such that when I G1 X0 Y0 Z0 the primary hotend will end up in the center of the heatbed?

Also, does G28 affect the outcome of G33?
Re: Marlin & Delta, some questions
April 19, 2019 11:30AM
change that first answer... it is relative to the +.... (brain slipped back into Cartesian mode)

Set Hotend Offset

Please read G33
and G28


One sets the parameters of the machine.
The other sets the position of the axies to a known location. (home)
.
You have to configure you machine before you home. (or it doesn't know for eg that your end stops are uneven)

Edited 3 time(s). Last edit at 04/19/2019 11:43AM by Dust.
Re: Marlin & Delta, some questions
April 20, 2019 03:05AM
Oh, my bad - I meant G29, not G28
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