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Bad Subtraction
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* April 14, 2014, 12:41:56 AM
In the attached file, I have an extrusion and a spin (shapes included).

If I subtract the extrusion from the spin, the extrusion disappears but it does not subtract from the spin.

Any idea why>

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* April 14, 2014, 07:06:59 AM
#1
In the attached file, I have an extrusion and a spin (shapes included).

If I subtract the extrusion from the spin, the extrusion disappears but it does not subtract from the spin.

Any idea why>
Bigjim,  The bodies don't intersect ??? there are two solids and two regions....

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"What do I know, I'm still learning"..
Windows 7 64 bit HP > 2019-2018-2017, TurboCad Platinum 21,20,19 and 18.Using LightWorks, Anilab lab 5.  HP all in one  23" Touch smart screen with Nvidia Geforce 210, open gl 3.3. Intel Core i5 ,2.27GHz,4 GB ram.


* April 14, 2014, 08:10:22 AM
#2
In the attached file, I have an extrusion and a spin (shapes included).

If I subtract the extrusion from the spin, the extrusion disappears but it does not subtract from the spin.

Any idea why>

Is there something wrong with the Spin?  Look at the drawing in a rendered view.

Henry H

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* April 14, 2014, 08:48:53 AM
#3
I am trying to subtract the solids. It looks like one goes through the other.

Spins have been causing me all kinds of problems. I find the easiest way to have something screw up is to subtract something from a spin.

This is related to the grid line problem in the New Features section.

There are concentric rings in the spin. I want to knock out sections of them. I have circled where the 2d ring intersects the loft. The first ring does so as well but the intersection is hidden in this view.
« Last Edit: April 14, 2014, 09:18:41 AM by bigjimslade »

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* April 14, 2014, 09:48:16 AM
#4
I am trying to subtract the solids. It looks like one goes through the other.

Spins have been causing me all kinds of problems. I find the easiest way to have something screw up is to subtract something from a spin.

This is related to the grid line problem in the New Features section.

There are concentric rings in the spin. I want to knock out sections of them. I have circled where the 2d ring intersects the loft. The first ring does so as well but the intersection is hidden in this view.

Try "sat healing" on the spin solid and then on the extruded solid then try the 3d subtract. see attachment. select "don't remove subtrahend if you want the extruded solid to stay.

>I was original in RedSdk mode and the intersections weren't visible. That Redsdk is a pain in the arse! it's worse in V21 :P
« Last Edit: April 14, 2014, 09:50:35 AM by Dean »

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"What do I know, I'm still learning"..
Windows 7 64 bit HP > 2019-2018-2017, TurboCad Platinum 21,20,19 and 18.Using LightWorks, Anilab lab 5.  HP all in one  23" Touch smart screen with Nvidia Geforce 210, open gl 3.3. Intel Core i5 ,2.27GHz,4 GB ram.


* April 14, 2014, 11:04:27 AM
#5
SAT heading does nothing for me. I actually wonder if it does any healing as it is a spin with nothing else done to id.

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* April 14, 2014, 11:44:05 AM
#6
Bigjim,
is the picture I posted displaying what you're looking to accomplish? cause the sat healing worked for me with the file you posted. Try the attached file. 3d subtract the extruded solid from the spin.

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"What do I know, I'm still learning"..
Windows 7 64 bit HP > 2019-2018-2017, TurboCad Platinum 21,20,19 and 18.Using LightWorks, Anilab lab 5.  HP all in one  23" Touch smart screen with Nvidia Geforce 210, open gl 3.3. Intel Core i5 ,2.27GHz,4 GB ram.


* April 14, 2014, 12:11:44 PM
#7
It looks correct What version of TC are you using? I am using 20.

The shape is supposed to cut a gap in the 2d ring. The 1st ring is supposed to be cut so that it only exists in that gap.

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* April 14, 2014, 01:17:03 PM
#8
Sorry Bigjim, I thought you had v21. Here's the file in V20 format.

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"What do I know, I'm still learning"..
Windows 7 64 bit HP > 2019-2018-2017, TurboCad Platinum 21,20,19 and 18.Using LightWorks, Anilab lab 5.  HP all in one  23" Touch smart screen with Nvidia Geforce 210, open gl 3.3. Intel Core i5 ,2.27GHz,4 GB ram.


* April 14, 2014, 02:19:58 PM
#9
Jim,

In my view the problem is being caused because your using extrude on a region that is not a single closed shape, having a region that is joined the corners instead being a single shape appears to case TC problems,  Dean's sat healing method works fine for me (using it on the extrusion not the spin) and is simply repairing whatever problems the region is creating.

Personally  I wouldn't use regions in that situation.

Andy

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* April 14, 2014, 04:01:22 PM
#10
You are correct. It appears to be that corner that is causing the problem I widened things up there and it works for the moment.
« Last Edit: April 14, 2014, 04:20:07 PM by bigjimslade »

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