#Correctly applying skew correction

51 messages · Page 1 of 1 (latest)

grizzled garnet
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After a partly rebuild/modification of my printer I followed the commissioning guide to get it set up correctly.

When getting to the skew correction I was a bit thrown off my printer.cfg does not contain a variable_skew_profile variable. I then followed the klipper doc since it is mentioned in the printer.cfg for skew correction. I added the [skew_correction] to the printer.cfg and added the profile.

Do I just add this to my printer.cfg?

[gcode_macro _USER_START_PRINT]
gcode:
variable_skew_profile: "my_skew"

I haven't found clear information how to add it to your config

frigid lotusBOT
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void merlin
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make sure to follow all of the steps in that section

grizzled garnet
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I am also not on the latest firmware

void merlin
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It looks like it’s in the guide you are following. Step 3

Also, what z probe do you have?

image0.jpg
grizzled garnet
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bl-touch

grizzled garnet
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do I just write variable_skew_profile: "my_skew" anywhere into the config?

void merlin
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Then add it to the [gcode_macro RatOS] like the 4.1 guide says. Even though you have a 3.1 it’s still ratos based

grizzled garnet
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this is the only part where "skew" is even mentioned

image.png
void merlin
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What’s above that section.

grizzled garnet
void merlin
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Just add it at the end of that section after variable_pause_print_park_in

grizzled garnet
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Thank you so much.

void merlin
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That’s mine buts it a vc4 so slightly other options in there but you get the point. All of those variable_ go in that section.

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You are welcome

grizzled garnet
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oh, yours is a bit different

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I need to look into speeds and accel too 😂

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still on the stock 3k and just upped the travel a bit to 500

void merlin
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It’s a vc4 running ratos 2.1.0 so some different settings

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It’s also running 48v for the coreXY and hybrid steppers

grizzled garnet
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I am on 2.1.0 RC3 too

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oh, thats nice

void merlin
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Pinda for your z probe?

grizzled garnet
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thats probably the next project, converting to 48v

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but need to get new stepper drivers and some room for another PSU

grizzled garnet
void merlin
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Ahh. I would look at beacon and upgrading to ratos 2.1.0 for dynamic heat soaking if I still had my vc3.0 built. It’s in pieces right now as I only have room for one 500mm printer

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Save 48v upgrade till after beacon. Beacon is amazing

grizzled garnet
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I will look into it but beacon only works with spring steel doesn't it?

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I also use a blackprint surface (which is some kind of G10 I think), I glued it to a spring steel sheet but don't know if this will work

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Since I saw you have variable_relative_extrusion on false and mine is on, I don't really remember what that does exactly

void merlin
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It needs steel at some point to pickup and may work. Ask over in #beacon-contact or the beacon discord for sure

void merlin
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That’s not something I would change unless your slicer config matches

grizzled garnet
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it has to correspond with the slicer like you said (even wrote that in comment on the code)

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oh, I think I know another problem why I ruled out the beacon, I think it would be problematic on my setup, there was something with the pi/octopus communication but I am not sure if I am mixing up something here

tough apex
grizzled garnet
tough apex
grizzled garnet
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Hmmm, I thought I have to flash the octopus board separately via sd?

tough apex
grizzled garnet
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Maybe I’ll buy a new, sd then.

tough apex
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Sorry you only need to flash Pi

grizzled garnet
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Oh, that’s easy then.

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Second sd and just try it out.

tough apex
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Yep wasnt hard. I just did it a couple of weeks ago.

void merlin
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I can say 2.1.0 is well worth every bit of time spent on the upgrade. Just not dealing with first layer issues saved me more time in two prints than the upgrade took