Subtract but leave original

[Wish List System]

Summary: Subtract but leave original

Description: Subtract but leave original element that creates the cut. ie a cube has a sphere on one corner. I want to cut the cube with the sphere so one corner is missing. By using this method it would leave the sphere visible so that I don't need to redraw the sphere if I want it as part of the model.


Product and Feature: AutoCAD - 3D

Submitted By: wrmarshall on 01/19/2022

[Wish List System]

Subtract but leave original

Summary: Subtract but leave original cutting geometry visible

Description: Subtract but leave original element that creates the cut. ie a cube has a sphere on one corner. I want to cut the cube with the sphere so one corner is missing. By using this method it would leave the sphere visible so that I don't need to redraw the sphere if I want it as part of the model.


Product and Feature: AutoCAD - 3D

Submitted By: wrmarshall on 01/19/2022

[Wish List System]

3D Subtract but leave original

Summary: 3D Subtract but leave original cutting geometry visible

Description: Subtract but leave original element that creates the cut. ie a cube has a sphere on one corner. I want to cut the cube with the sphere so one corner is missing. By using this method it would leave the sphere visible so that I don't need to redraw the sphere if I want it as part of the model.


Product and Feature: AutoCAD - 3D

Submitted By: wrmarshall on 01/19/2022

[tedg]

3D Subtract but leave original

Summary: 3D Subtract but leave original cutting geometry visible

Description: Subtract but leave original element that creates the cut. ie a cube has a sphere on one corner. I want to cut the cube with the sphere so one corner is missing. By using this method it would leave the sphere visible so that I don't need to redraw the sphere if I want it as part of the model.


Product and Feature: AutoCAD - 3D

Submitted By: wrmarshall on 01/19/2022

Agreed that would be a great built-in feature when modeling, I actually forgot that it did this.
I don't do much AutoCAD 3D modeling,
but what I have done for this problem in the past, is copy-in-place the solid I'm removing, so when done it has cut the object and still had a copy of what you cut with.

I use this down and dirty lisp I wrote a long time ago, to do the copy-in-place (not fancy but it works great)

;;;copies picked objects in place
(defun c:cip (/ ce ss)
	(setq ce (getvar "cmdecho"))
	(setvar "cmdecho" 0)
	(setq ss (ssget))
	(command "copy" ss "" "0,0""0,0")
	(setvar "cmdecho" ce)
	(princ)
)