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   I'm new here and to Autocad 3d solids and have what I think will be a very simple problem to solve, but, can't figure it out myself.

To keep it simple, think of a solid model of a 2x4 board (length inconsequential). What is needed is the 2x4 to be "ripped" down along its length by 0.25" to a nominal 3.75". That's it!

I've tried all the "stretch" and "extrude" iterations I can figure out and nothing accomplishes this simple task. Seems that changing the dimensions of a solid object should be rather straightforward. Maybe that's my problem---it's just too simple. Or, I'm too simple 

Thanks for helping a newbie.

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Sid! Members Profile Send Private Message Find Members Posts Add to Buddy List Newbie Joined: 30.Sep.2012 Location: United States Using: DesignCAD Status: Offline Points: 4	Topic: How to Make a Small Geometry Change in a 3d Solid. Posted: 30.Sep.2012 at 20:59
	I'm new here and to Autocad 3d solids and have what I think will be a very simple problem to solve, but, can't figure it out myself. To keep it simple, think of a solid model of a 2x4 board (length inconsequential). What is needed is the 2x4 to be "ripped" down along its length by 0.25" to a nominal 3.75". That's it! I've tried all the "stretch" and "extrude" iterations I can figure out and nothing accomplishes this simple task. Seems that changing the dimensions of a solid object should be rather straightforward. Maybe that's my problem---it's just too simple. Or, I'm too simple Thanks for helping a newbie.

John Connor Members Profile Send Private Message Find Members Posts Add to Buddy List Senior Member Joined: 01.Feb.2011 Location: United States Using: AutoCAD 2018 Status: Offline Points: 7175	Posted: 01.Oct.2012 at 00:01
	Try the "Move Faces" command or "grip edit" the solid. The normal Stretch command will not work on a 3D solid. Or recreate the 2x4 using the actual dimensions of 1.5x3.5.
	"Humans have a strength that cannot be measured. This is John Connor. If you are reading this, you are the resistance." <<AutoCAD 2015>>

Sid! Members Profile Send Private Message Find Members Posts Add to Buddy List Newbie Joined: 30.Sep.2012 Location: United States Using: DesignCAD Status: Offline Points: 4	Posted: 01.Oct.2012 at 02:51
	Thanx, John. I took the easy way and used your suggestion to simply remake the part using the "box" command. However, I will pursue your other two suggestions and learn more about moving faces and using grips. I have, already used your grips tip and saw the potential for "in place" editing of parts with it (as opposed to reconstructing the part entirely). Many thanks for your help, John. Sid

heinsite Members Profile Send Private Message Find Members Posts Add to Buddy List Senior Member Joined: 05.Feb.2009 Location: United States Using: AutoCAD 2014 Status: Offline Points: 640	Posted: 03.Oct.2012 at 11:22
	Play with SLICE too. Dave.
	Dave Hein, P.E. Hawaii District Engineer Kona International Airport AutoCAD Certified Professional Autodesk Expert Elite

Sid! Members Profile Send Private Message Find Members Posts Add to Buddy List Newbie Joined: 30.Sep.2012 Location: United States Using: DesignCAD Status: Offline Points: 4	Posted: 08.Oct.2012 at 02:56
	Thanx, Dave. Another great tool.

DBARN Members Profile Send Private Message Find Members Posts Add to Buddy List Newbie Joined: 24.Oct.2012 Location: United States Using: AUTOCAD 2013, AUTOCAD ARCH 2012 Status: Offline Points: 14	Posted: 24.Oct.2012 at 23:08
	extrude face, (not extrude), then select directly on the face, then type in -.25(negative distance). A postive number adds that amount, negative subtracts. make sure when you select the surface that it says 1 surface selected, if it says 2, then hit R (remove) select surface you don't want to modify and continue with positive or negative distance. Hint: You can also pull it to another point, object, etc, by using your osnaps.
	Man up and Fix it right, Short cuts aren't always short...

Sid! Members Profile Send Private Message Find Members Posts Add to Buddy List Newbie Joined: 30.Sep.2012 Location: United States Using: DesignCAD Status: Offline Points: 4	Posted: 29.Oct.2012 at 06:05
	DBARN, your suggestion was right on! Thanx!

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How to Make a Small Geometry Change in a 3d Solid.

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