Hack gcode to print missing portion of model...

[ak2766]

I had a print job running from last night and it stopped printing on ~layer 210 of 235 layers - a '69 Dodge charger for my son. The print job seems to have been starved of plastic as I had to pull hard on the plastic to get it to start peeling away from the spooler.

My question: is it possible to hack the gcode file so that I can get layer 210 to 235 printed starting on the printer bed? I haven’t tried yet as I believe if I did without hacking the file, it will attempt to print mid-air.

[horsj]

Hacking the gcode is probably not trivial but, most slicers will allow you to specify which layer to make the bottom, which would allow you to do what you want.

[Lea3DPrint]

You could edit the model in Tinkercad or whatever and remove the bottom part of the print. The two parts can then be joined and lightly sanded. I’ve done this once and the result looked very good.

[3dprintingguy]

much easier to edit the stl than to hack the gcode

[LTcr6]

Well as far as hacking the gcode goes you can put the gcode that is ready to print into notepad and delete everything above the line of the layer you were on (not including the things that are not instructions at the very top of the code ) and also to change the beginning length of extrusion or it will sit in one place and extrude all of the plastic untill it reaches that layer and then start moving. This is a great video on it - YouTube

[3dprintingguy]

great video JR, have saved it for future use!
doesnt work on makerbots but for my other machines ill definitely give it a go!