Ibot
RRCRat Rig Community [Unofficial]
•Created by Ibot on 1/24/2025 in #fix-my-print
IDEX XY Offset drift (VC4)
I did the force belt tension with 3kg. Seemed to do something.
Had 2 successful tool change prints, but disabled it again just to be safe.
In the last few days I have printed some large models with many toolchanges (1d, ~1.4k changes), 3 of them without toolchange problems, the 4th with drift again, even with toolshift disabled. How can I fix something that is completely random? Maybe I should finally get rid of idex...
657 replies
RRCRat Rig Community [Unofficial]
•Created by Ibot on 1/24/2025 in #fix-my-print
IDEX XY Offset drift (VC4)
I'm really interested to see if anyone here is able to solve this. I will defenetly stop here, because after 100+ hours of disassembling and reassembling, it feels like a waste of time to fix a system that is this picky, so that if you change a component in the future (belt), you can spend another few hundred hours fixing it.
657 replies
RRCRat Rig Community [Unofficial]
•Created by Ibot on 1/24/2025 in #fix-my-print
IDEX XY Offset drift (VC4)
I don't mean a total. Just that 5/5 have this problem. That does not mean that everyone has it.
657 replies
RRCRat Rig Community [Unofficial]
•Created by Ibot on 1/24/2025 in #fix-my-print
IDEX XY Offset drift (VC4)
I don't think its a low rate. Many just don't notice it. Like many here
657 replies
RRCRat Rig Community [Unofficial]
•Created by Ibot on 1/24/2025 in #fix-my-print
IDEX XY Offset drift (VC4)
But with 5/5 printers is a pretty high issue rate. I think a option to disable toolshift would be great
657 replies
RRCRat Rig Community [Unofficial]
•Created by Ibot on 1/24/2025 in #fix-my-print
IDEX XY Offset drift (VC4)
Yes, I checked that too. Seems OK
657 replies
RRCRat Rig Community [Unofficial]
•Created by Ibot on 1/24/2025 in #fix-my-print
IDEX XY Offset drift (VC4)
I actually tested to see if it was thermal drift. There is some drift, but it is not the cause of the problem. I checked this by printing with all heaters off, setting the extruder rotation distance to something like 999999999 and cancelling the print with CANCEL_PRINT_BASE to leave the motors on to check with VAOC afterwards.
This is also a nice way to check what is actually drifting. But for me it's mostly random.
657 replies
RRCRat Rig Community [Unofficial]
•Created by Ibot on 1/24/2025 in #fix-my-print
IDEX XY Offset drift (VC4)
No rush! I am very grateful to anyone who prints the test.
657 replies
RRCRat Rig Community [Unofficial]
•Created by Ibot on 1/24/2025 in #fix-my-print
IDEX XY Offset drift (VC4)
Yea, this thread is getting quite long. 😆
657 replies
RRCRat Rig Community [Unofficial]
•Created by Ibot on 1/24/2025 in #fix-my-print
IDEX XY Offset drift (VC4)
Yeah, I'm really confused too. It would be really interesting to know how many Idex printers actually suffer from this problem. I hope some people print the test.
It might also help us understand what is going on if we find someone without the problem.
657 replies
RRCRat Rig Community [Unofficial]
•Created by Ibot on 1/24/2025 in #fix-my-print
IDEX XY Offset drift (VC4)
I also tried different acceleration/speeds. But only disabling toolshift fixed it completely for me.
657 replies
RRCRat Rig Community [Unofficial]
•Created by Ibot on 1/24/2025 in #fix-my-print
IDEX XY Offset drift (VC4)
@Helge Keck any chance of getting this option in RatOS?
657 replies
RRCRat Rig Community [Unofficial]
•Created by Ibot on 1/24/2025 in #fix-my-print
IDEX XY Offset drift (VC4)
657 replies
RRCRat Rig Community [Unofficial]
•Created by Ibot on 1/24/2025 in #fix-my-print
IDEX XY Offset drift (VC4)
657 replies
RRCRat Rig Community [Unofficial]
•Created by Ibot on 1/24/2025 in #fix-my-print
IDEX XY Offset drift (VC4)
The filament waste also goes crazy at this point. At least I can say I tried. 😆
657 replies
RRCRat Rig Community [Unofficial]
•Created by Ibot on 1/24/2025 in #fix-my-print
IDEX XY Offset drift (VC4)
657 replies
RRCRat Rig Community [Unofficial]
•Created by Ibot on 1/24/2025 in #fix-my-print
IDEX XY Offset drift (VC4)
I know this is not a real solution, but after 100+ hours of troubleshooting, disassembling and reassembling, I finally want to make some actual prints.
657 replies
RRCRat Rig Community [Unofficial]
•Created by Ibot on 1/24/2025 in #fix-my-print
IDEX XY Offset drift (VC4)
Would you be willing to implement this in RatOS? Since it looks like this is not a "one time issue".
While I can provide and test the macros, I do not have nearly enough knowledge to mesh with the configurator code. As T0/T1 is specified in the ratos.cfg.
657 replies
RRCRat Rig Community [Unofficial]
•Created by Ibot on 1/24/2025 in #fix-my-print
IDEX XY Offset drift (VC4)
Fixed the TOOLSHIFT=0 issue. Where it was not working during printing.
https://github.com/Rat-OS/RatOS-configurator/pull/74
Adding a new variable to toolhead.cfg like
variable_toolchange_toolshift: False # enable/disable toolshift for printing
And slightly modifying the T0/T1 macro added by the configurator to ratos.cfg
[gcode_macro T0]
gcode:
{% set x = params.X|default(-1.0)|float %}
{% set y = params.Y|default(-1.0)|float %}
{% set z = params.Z|default(0.0)|float %}
{% set s = params.S|default(toolshift)|int %}
{% set s = 0 if printer["gcode_macro RatOS"].toolchange_toolshift|default(true)|lower == 'false' %}
{% if printer["gcode_macro _SELECT_TOOL"] is defined %}
_SELECT_TOOL T=0 X={x} Y={y} Z={z} TOOLSHIFT={s}
{% endif %}
- Not tested, just a quick example657 replies
RRCRat Rig Community [Unofficial]
•Created by Ibot on 1/24/2025 in #fix-my-print
IDEX XY Offset drift (VC4)
If Toolshift requires this level of fine-tuned gantry to work, I wonder how a person building this as their first printer is supposed to do it.
This is my 11th build, so I thought I should have enough experience for this, but it seems I'm too dump to get it right.
In my opinion, there MUST be at least a setting in RatOS to disable toolshift for people who can't get it to work.
657 replies