I did consider doing a video on how to resume, but for now here's my technique.
two methods:
1. 3d printer shut off due but computer remained on (if you run from a laptop this will be your scenario)
- You should still have the gcode that was running at the time of failure - the log should show you where the error happened. Make note of the line of code that was trying to run when it failed.
- Turn 3d printer back on, get all temps up.
- Save out the gcode from repetier to a text file that you can edit.
- Open the gcode file and using the chunk of code saved from earlier, do a search and find it.
- One you find the code delete all of the code prior to this chunk, but leave the necessary header code (as long as it doesn't include anything that tells it to drop to z=0 or z=15 or something like this)
- Save the gcode out as a new file
- Open the gcode in Repetier
- Press print and if all goes well it should resume with a slight overlap of the part it failed on leaving only a minor blemish and continuing flawlessly.
2. 3d printer and computer both shut off due to power failure. You will need to have an identical gcode file to what you printed (either reslice it or even better have the gcode you printed from already saved) This is less accurate
![Sad :(](./images/smilies/icon_e_sad.gif)
- Using the most accurate method you can, measure the height of the print
- Approximate as best you can the layer height the print was currently on (using the height as well as your set layer height to calculate it)
- Once you work out what layer height you were on go to
http://gcode.ws/" onclick="window.open(this.href);return false; and upload your gcode
- Scroll to the layer that the print failed from, then look at the gcode, it will have everything from that layer onward highlighted.
- Copy that chunk of code, and make a new gcode file from that OR take note of that layer location and edit your original gcode file (make sure you remember the necessary headers)
- Save the new code
- Load it back into repetier (or whatever you're using)
- Print and pray that it all goes well with as little blemishes as possible.
You can cancel either of these methods pretty quickly and try again if it doesn't look right
Source: Lots of looooong failed prints
![Smile :)](./images/smilies/icon_e_smile.gif)