Several objects or workplane and need to delete all but 1 object
 
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Several objects or workplane and need to delete all but 1 object  

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eager
(@eager)
Estimable Member
Several objects or workplane and need to delete all but 1 object

I'd appreciate any simple ways to remove or delete unwanted figures on the Prusa Slicer Workplane. I've Googled and TB's this but I don't see when you import an .stl file into the Prusa Slicer and see them all on the Work-plane how to then "highlight" the unwanted figures and remove them? If I choose just Delete it deletes all the figures. Thank you.

Posted : 30/05/2025 9:21 pm
FoxRun3D
(@foxrun3d)
Illustrious Member
RE: Several objects or workplane and need to delete all but 1 object

No screen shots shown so I'm not sure about your specific scenario.

First, if you have imported several STLs, all will be selected by default. You can click in the white space below the object list on the right to deselect them, then select the one you want to delete.

More complex, if you loaded an STL that contains several objects, the object list will only show one file name. You can right click on the name and select Split. Which gives you two options, to parts or to objects. To objects will create stand-alone objects you can individually manipulate. To parts will split the model into separate parts but they are all grouped under the same object. You can still select individual parts and delete them though.

Hope that helps.

Formerly known on this forum as @fuchsr -- https://foxrun3d.com/

Posted : 30/05/2025 11:13 pm
1 people liked
David Finkleman
(@david-finkleman-2)
Member
RE: Several objects or workplane and need to delete all but 1 object

I once thought that arranging objects densely would print faster than printing each one independently.   Do not do this!   Make each piece a sliced g code file.  It takes time for the print head to move from one part to another, there are many nozzle retractions, and filament threads often connect everything.  So, you have sliced a file with several objects anyway.  The printer screen has a “Control” icon.   Once you choose that, the first line is “cancel object,” which leads to “cancel current object.”   When the print head moves to start an object that you don’t want, push the button as soon as you can to “cancel current object.”   You can cancel one or several objects in the file, even take it down to just one.   But separate sliced file for each part is the most foolproof.

You also seem unable to separate objects in source stl, obj, etc. files.  Plus Slicer will do that.  You have to “slice” the big file into individual pieces.  It doesn’t matter if the slice plane intersects other objects because you can right click on the parts that you didn’t want to slice.  They will turn the same color as the bunch of things that are still connected.  I think the smart way to keep just the one you want is to “copy” it with the icon on the top tool bar.  Then erase the whole thing and paste the copy back on the plate.

But sometimes one or a few parts in a combined file don’t  print correctly.  You can reprint them without printing the whole file again by printing again and cancelling everything else.

 

Posted : 06/06/2025 2:55 am
Hassan Bhatti
(@hassan-bhatti)
Member
RE: Several objects or workplane and need to delete all but 1 object

In PrusaSlicer, click on each unwanted model while holding Shift to select multiple objects individually, then press Delete. This should only remove the selected ones, not all. Be sure not to select the group as a whole. Hope it helps

Posted : 06/06/2025 9:33 am
1 people liked
eager
(@eager)
Estimable Member
Topic starter answered:
RE: Several objects or workplane and need to delete all but 1 object

Hassan.... Thar worked perfectly! Much appreciated.

Thank you ALL for your helpful posts.

 

Posted : 08/06/2025 10:33 pm
1 people liked
eager
(@eager)
Estimable Member
Topic starter answered:
RE: Several objects or workplane and need to delete all but 1 object

Hi Hassan..... I'd appreciate your help ASAP (I'm on deadline). I'm trying to print 10 of the 12 animal paperclips but delete 2 of them. I hold Down the Shift key and it highlights the whole group, not just the one(s) I want to delete. Is my very first step after loading the print to then place the cursor over the 1st animal paperclip I don't want and then press the Delete key? It's the stl file in Thingiverse named and I don't want the Cross nor the Heart shaped paperclip. Thank you ever so much!

Posted : 08/05/2026 6:38 pm
eager
(@eager)
Estimable Member
Topic starter answered:
RE: Several objects or workplane and need to delete all but 1 object

Thingverse all parts file.

Posted : 08/05/2026 6:41 pm
_KaszpiR_
(@_kaszpir_)
Noble Member
RE: Several objects or workplane and need to delete all but 1 object

Right click on the object in the list on the right and select split to objects or parts ( depending on what you need) and then delete the individual ones?

Or add negative volume at the place where are the unwanted elements.

See my GitHub and printables.com for some 3d stuff that you may like.

Posted : 11/05/2026 6:33 am
Sembazuru
(@sembazuru)
Noble Member
RE: Several objects or workplane and need to delete all but 1 object
Posted by: @eager

Hassan.... Thar worked perfectly! Much appreciated.

Thank you ALL for your helpful posts.

 

Another trick to learn is clicking on an item in the tree list while CTRL (I guess that would be command on Mac?) doesn't just select an item in the tree, it toggles its selected status. So if all the objects on the plate are loaded into the slicer as individual objects (either from start or after splitting a multi-part object into objects) than you can press CTRL-A to select all, and then while holding the CTRL key click on the objects that you want to keep (unselecting them). Then when you press the DELETE key, only the objects left selected will be deleted.

I did just discover by playing around that this kind of works for multiple instances of the same object. But here CTRL-A only selects the object trunk in the tree. I had to select the first instance in the list, SHIFT-click the last instance to select them all. Then I can CTRL-click individual instances to find the instances that I want to keep (maybe I only want to keep the ones in specific locations on the bed) and the DELETE key removes the others. The instance names will be re-numbered.

Unfortunately, once you have multiple things selected in the tree view, you can only toggle their select status in the tree view, not in the 3D view. So for that last example (multiple instances), you would probably need to CTRL-click toggling the selection off and on, watching the 3D view to see the color change, to know the physical location on the bed of the instances you are finding in the list.

See my (limited) designs on:
Printables - https://www.printables.com/@Sembazuru
Thingiverse - https://www.thingiverse.com/Sembazuru/designs

Posted : 11/05/2026 7:11 pm
1 people liked
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