nkuck
Posts: 30
Joined: Mon May 23, 2016 2:32 pm

Delete an object from a group while printing

Mon Jul 22, 2019 5:17 pm

Is it possible to remove one of several items on the print bed while printing, in the event of a failure in progress? This has happened to me several times, and the ability to delete the faulty object would allow to save the test.

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dkightley
Posts: 2282
Joined: Tue Mar 10, 2015 4:09 pm

Re: Delete an object from a group while printing

Mon Jul 22, 2019 8:08 pm

In a nutshell.....no!

By the time you're printing, the object or objects have been processed by the slicer and the gcode stream of instructions have been generated and written to file. The printing part of the cycle is simply sending these already written gcode instruction from that file to the printer one by one..

And if you're thinking that printing via USB is different to printing from a SD card....then they're not. Via USB, the gcode instructions are read by the software and squirted one by one to the printer. From a SD card, the printer does exactly the same thing.
Doug Kightley
Volunteer at the National Tramway Museum http://www.tramway.co.uk
Railway modeller and webmaster at http://www.talkingtgauge.net

nkuck
Posts: 30
Joined: Mon May 23, 2016 2:32 pm

Re: Delete an object from a group while printing

Tue Jul 23, 2019 5:25 am

Thanks, what I thought, but I recall reading something about one slicer having that ability.

wirlybird
Posts: 1242
Joined: Sun Jul 17, 2016 1:32 pm

Re: Delete an object from a group while printing

Tue Jul 23, 2019 7:12 am

I think octoprint or something like that has that ability. I have read about it.

This is a good reason why I stopped with the full bed prints for the most part.

You really don't loose much time by doing smaller batches.

shocksofmighty
Posts: 88
Joined: Mon Sep 12, 2016 11:36 am

Re: Delete an object from a group while printing

Tue Jul 23, 2019 10:19 am

https://plugins.octoprint.org/plugins/cancelobject/

Not surprisingly, S3D has been behind in updates that allow this feature to work with octoprint natively. With S3D it requires that you use a process per object.

S3D-Jake
Posts: 882
Joined: Wed Jun 20, 2018 12:45 pm

Re: Delete an object from a group while printing

Tue Aug 20, 2019 1:44 pm

Great feature request guys! You're also correct that the plugin for Octoprint can already provide this functionality for you. You can even use multiple processes per model thanks to the variable settings wizard. A good tip of you want to do that is to name your processes before splitting them into multiple regions using the wizard. This will help visually identify them in Simplify3D and in Octoprint.
"A bird does not sing because it has an answer. It sings because it has a song."

shocksofmighty
Posts: 88
Joined: Mon Sep 12, 2016 11:36 am

Re: Delete an object from a group while printing

Wed Jan 22, 2020 7:49 pm

Marlin firmware 2.0 now includes M486 commands which allow cancelling of individual objects. See: https://reprap.org/wiki/G-code#M486:_Cancel_Object

This feature can save lots of prints and should be something included by slicers.

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