Restart a print on a given layer

[Thomas4711 0]

Is there a way to restart a paused print on a given layer?

 

During a print the material got stuck in the feeder, so I paused the print,  reloaded the material and was ready to resume.

The problem was, that this has happend 3 or 4 layers before I paused.

 

So ideally I would like to resume the print 4 layers before I paused it.

Does anybody know a trick how to do that, without manually editing the G-code file?

 

Thank you for your expertise.

[gr5 2,094]

Yes you can!  If you have a UM2 series printer.  Get this firmware which is really great.  Really great.  And lets you say which layer to resume on:

 

https://github.com/TinkerGnome/Ultimaker2Marlin/releases

[Thomas4711 0]

Thanks for the reply.

 

I have an Ultimker 3. Sorry, I forgot to mention in my original post.

 

Is there also a solution out for UM3?

[gr5 2,094]

no, sorry.  The UM2 is more hackable.  You have to edit the gcode.  Basically remove the layers that printed already from the gcode and you have to add a G92 for extruder position (which is broken in 5.2 firmware).  Read about G92 here:

https://reprap.org/wiki/G-code#G92:_Set_Position

 

Basically look at the last E value that you delete and set the position to that value.  So if the last deleted printing move was:

G1 X123.432 Y23.4433 E1000.5123

 

Then replace it with

G92 E1000.5123

 

Other wise it will try to extrude a meter on the first printing move.

[Thomas4711 0]

OK. I will try when teh problem occurs next time.

 

Thank you for your help !!!