Help with calibration steps per mm x y z on kossel mini I'm hoping someone can advise me here.
My kossel is printing well for the most part but I'm trying to figure out how to fix one last problem.
If I print a 20mm cube as a test the end result measures
x 20.01mm
y 20.02mm
z 21.75mm
Steps per mm is currently set at 100 calculated based on T2 belt and 16 tooth
So my question is:
1. Do I adjust steps per mm to correct this Z error? ( bonus points if you can explain why the calculated number would be off by this much )
2. If so, do I adjust x y and z steps per mm to be the same?
3. If 2 is correct, I presume once the z size is printing correctly I'll need to adjust rod length settings to bring x and y back into the correct dimension?
Based on the Z error I calculate I should change my steps per mm from 100 ( calculated based on t2 and 16 tooth ) to 91.95 based on the measured final print size.
I'm just looking for confirmation on my thinking here before I start going through re calibrating the delta using the new steps per mm. Still not sure I understand why the calculated value would be off by such a big amount.
Anyway, any help or comments would be greatly appreciated.
https://reprap.org/forum/read.php?178,470239,470239#msg-470239
Thu, 25 Apr 2024 06:09:25 -0400Phorum 5.2.23https://reprap.org/forum/read.php?178,470239,472076#msg-472076Re: Help with calibration steps per mm x y z on kossel mini
https://reprap.org/forum/read.php?178,470239,472076#msg-472076
x = 20.02 mm
y = 20.03 mm
z - 20.01 mm

So I guess it worked as planned. Also, no adjustment of rod length was needed. The X and Y dimensions remained perfect, only the z dimensions changed with the change in steps per mm.

Thanks DC42.]]>lokidudeDelta MachinesTue, 17 Feb 2015 14:14:44 -0500https://reprap.org/forum/read.php?178,470239,470392#msg-470392Re: Help with calibration steps per mm x y z on kossel mini
https://reprap.org/forum/read.php?178,470239,470392#msg-470392
lokidudeDelta MachinesFri, 13 Feb 2015 15:19:14 -0500https://reprap.org/forum/read.php?178,470239,470373#msg-470373Re: Help with calibration steps per mm x y z on kossel mini
https://reprap.org/forum/read.php?178,470239,470373#msg-470373
2. Yes.

3. Yes, also adjust delta radius by the same proportion as you adjust rod length in order to keep the printing plane flat.]]>dc42Delta MachinesFri, 13 Feb 2015 14:55:23 -0500https://reprap.org/forum/read.php?178,470239,470239#msg-470239Help with calibration steps per mm x y z on kossel mini
https://reprap.org/forum/read.php?178,470239,470239#msg-470239
My kossel is printing well for the most part but I'm trying to figure out how to fix one last problem.

If I print a 20mm cube as a test the end result measures

x 20.01mm
y 20.02mm
z 21.75mm

Steps per mm is currently set at 100 calculated based on T2 belt and 16 tooth

So my question is:

1. Do I adjust steps per mm to correct this Z error? ( bonus points if you can explain why the calculated number would be off by this much )
2. If so, do I adjust x y and z steps per mm to be the same?
3. If 2 is correct, I presume once the z size is printing correctly I'll need to adjust rod length settings to bring x and y back into the correct dimension?

Based on the Z error I calculate I should change my steps per mm from 100 ( calculated based on t2 and 16 tooth ) to 91.95 based on the measured final print size.
I'm just looking for confirmation on my thinking here before I start going through re calibrating the delta using the new steps per mm. Still not sure I understand why the calculated value would be off by such a big amount.

Anyway, any help or comments would be greatly appreciated.]]>lokidudeDelta MachinesFri, 13 Feb 2015 09:12:31 -0500