Delta auto calibration October 17, 2019 02:17PM |
Registered: 4 years ago Posts: 2 |
Re: Delta auto calibration October 18, 2019 04:57PM |
Registered: 7 years ago Posts: 619 |
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mcrum
I've been working on a Micromake D1 for a while now. I've upgraded to an SKR 1.3 board and bl touch. My problem is with auto calibration or bed leveling. The print head comes down and stops a bit above the bed then moves down to probe but doesn't reach the bed and the bl touch isn't triggered. This results in the calibration failing. Any suggestions?
Thanks,
Michael
Re: Delta auto calibration October 19, 2019 12:25PM |
Registered: 4 years ago Posts: 2 |
Re: Delta auto calibration October 21, 2019 09:20AM |
Registered: 5 years ago Posts: 42 |
Re: Delta auto calibration October 21, 2019 11:00AM |
Registered: 7 years ago Posts: 619 |
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NAP1947
Dlc60, I am trying to calibrate my FLSUN Mini using the manual method and have been having problems because the guides I have followed all refer to final adjustments to the “DELTA SMOOTH ROD” setting which I cannot find in any version of Marlin I can download.
I tried to search for the “DigitalDentist” pages without success, can you provide a link to those articles please?
Thanks
Re: Delta auto calibration October 21, 2019 07:27PM |
Registered: 5 years ago Posts: 42 |
Re: Delta auto calibration October 22, 2019 12:06AM |
Registered: 7 years ago Posts: 619 |
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NAP1947
Dlc60, good technical article with much of it very way over my head and understanding.
I read the 3 point process very carefully but this seems to be for a Prusa type printer not a Delta.
I could find nothing that helps me solve my DELTA_SMOOTH_ROD dilemma.
Re: Delta auto calibration October 22, 2019 10:45AM |
Registered: 5 years ago Posts: 42 |
Re: Delta auto calibration October 22, 2019 06:53PM |
Registered: 7 years ago Posts: 619 |
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Should I reposition my bed mounting screws so they are aligned with towers, before I start the process?
Re: Delta auto calibration October 22, 2019 08:41PM |
Registered: 5 years ago Posts: 42 |
Re: Delta auto calibration October 22, 2019 10:44PM |
Registered: 7 years ago Posts: 619 |
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NAP1947
This process has been a very steep learning process for as my high school math is now almost 60 years old and memory is not what it used to be.
Any way we know the X axis runs between the X and Y towers and the Y axis runs on a line perpendicular to the X axis and straight back to the Z tower.
As none of these are parallel to the lines between the adjustment screws setting the printer up should be a matter of making small adjustments to 2 screws instead of one as described in the process blog. I am going to try that and if it does not work I will make new bed supports that place the adjustments screws directly in front of the 3 towers and start again.
This is a hobby not an obsession, right?
Re: Delta auto calibration October 23, 2019 03:49AM |
Registered: 10 years ago Posts: 732 |
You should position your bed so that it is perpendicular to all the towers. That is because many delta kinematics do not allow for tilted bed in relation to the 3 parallel towers. Most delta kinematics do not alow for non-parallel tilted towers as well.Quote
NAP1947
Should I reposition my bed mounting screws so they are aligned with towers, before I start the process?
Re: Delta auto calibration October 23, 2019 11:18AM |
Registered: 5 years ago Posts: 42 |
Re: Delta auto calibration October 23, 2019 12:05PM |
Registered: 7 years ago Posts: 619 |
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NAP1947
I have rechecked all of the level settings with a square to ensure all the tower to bed angles are 90 degrees.
I have adjusted and stiffened the towers so they are all parallel, top and bottom measurements are as follows, X to Y 285mm, Y to Z 285MM, X to Z 283mm.
So if I have these correct and my end stops at each tower are adjusted to 276.6mm and my Z height is 276.9mm, how exactly to I adjust for this discrepancy?
If I change the Z0 or the tower end stops the Z0 is always 0>30mm out.
This was my original issue that I perhaps did not describe accurately in the first question.
Thanks for all your help.
Re: Delta auto calibration October 23, 2019 12:27PM |
Registered: 5 years ago Posts: 42 |
Re: Delta auto calibration October 23, 2019 06:03PM |
Registered: 7 years ago Posts: 619 |
Quote
NAP1947
OK My rookiness is showing again.
What I should have said was "If I change the Z0 or the tower end stops the Z0 is always 0.30mm out"
If I do a G1 Z0 the nozzle stops at the bed.
If I do a Z0 at any of the 3 towers it is always 0.30 above the bed.
It is this 0.3mm I am trying to finesse.
Does that make more sense?
Re: Delta auto calibration November 01, 2019 03:59AM |
Registered: 5 years ago Posts: 42 |