logo
NOTICE:  This is the new PunchCAD forum. You should have received an email with your new password around August 27, 2014. If you did not, or would like it reset, simply use the Lost Password feature, and enter Answer as the security answer.
Welcome Guest! To enable all features please Login or Register.

Notification

Icon
Error
Extrude and maintain radius of internal angles
Options
Go to last post Go to first unread
Previous Topic Next Topic
andyww  
#1 Posted : Sunday, April 9, 2017 4:36:14 AM(UTC)
andyww

Rank: Guest

Joined: 4/9/2017(UTC)
Posts: 5
I am trying to extrude a shape which has filleted internal sides, at an extrusion offset angle of 8 degrees.

The problem is the arcs of the fillets reduce in radius to zero as the extrusion progresses. This would be expected but is there any way to maintain the arcs constant?
Back to top
jdi000  
#2 Posted : Sunday, April 9, 2017 6:14:54 AM(UTC)
jdi000

Rank: Administration

Joined: 7/29/2007(UTC)
Posts: 1,862
United States

Thanks: 1 times
Was thanked: 87 time(s) in 81 post(s)
Andy

Can you post some pics of what you are describing?

Not sure what this looks like but can you add the radius after extrusion.

Regards

Jason
Windows 11, 10
Back to top
L. Banasky  
#3 Posted : Sunday, April 9, 2017 6:30:29 AM(UTC)
L. Banasky

Rank: Senior Member

Joined: 2/16/2007(UTC)
Posts: 601

Thanks: 153 times
Was thanked: 149 time(s) in 102 post(s)
Hi Andy,
As Jason suggested, an example would be helpful.
You could subtract a tapered solid.
Larry
File Attachment(s):
Extrusion.sfx (103kb) downloaded 9 time(s).
L. Banasky attached the following image(s):
Extrusion.jpg (90kb) downloaded 9 time(s).

You cannot view/download attachments. Try to login or register.
Back to top
andyww  
#4 Posted : Monday, April 10, 2017 2:57:16 AM(UTC)
andyww

Rank: Guest

Joined: 4/9/2017(UTC)
Posts: 5
This shows the issue, the lines should end up parallel rather than the radius tapering and the lines converging, eventually to a point.
andyww attached the following image(s):
extrude.png (5kb) downloaded 8 time(s).

You cannot view/download attachments. Try to login or register.
Back to top
L. Banasky  
#5 Posted : Monday, April 10, 2017 4:10:27 AM(UTC)
L. Banasky

Rank: Senior Member

Joined: 2/16/2007(UTC)
Posts: 601

Thanks: 153 times
Was thanked: 149 time(s) in 102 post(s)
Andy,
As Jason suggested:

<<<< Not sure what this looks like but can you add the radius after extrusion.>>>>
seems to work well.
Larry
File Attachment(s):
Extrusion2.sfx (31kb) downloaded 10 time(s).
L. Banasky attached the following image(s):
Extrusion2.jpg (108kb) downloaded 19 time(s).

You cannot view/download attachments. Try to login or register.
Back to top
andyww  
#6 Posted : Monday, April 10, 2017 11:25:23 AM(UTC)
andyww

Rank: Guest

Joined: 4/9/2017(UTC)
Posts: 5

That is what I need to do.

How to do this?

Thanks.
Back to top
L. Banasky  
#7 Posted : Monday, April 10, 2017 12:50:32 PM(UTC)
L. Banasky

Rank: Senior Member

Joined: 2/16/2007(UTC)
Posts: 601

Thanks: 153 times
Was thanked: 149 time(s) in 102 post(s)
Draw the outside and inside lines.
Extrude with 8 degree taper.
Use Constant Blend, and select the corner where the inside
sides meet.
Larry
L. Banasky attached the following image(s):
Constant Blend.jpg (73kb) downloaded 13 time(s).

You cannot view/download attachments. Try to login or register.
Back to top
andyww  
#8 Posted : Wednesday, April 12, 2017 8:02:39 AM(UTC)
andyww

Rank: Guest

Joined: 4/9/2017(UTC)
Posts: 5
When I try this is seems to be applying a fillet to all corners of the selected corner, including the front and back faces.

I have made sure nothing is originally selected, then selecting just the curve in the existing corner does this.
andyww attached the following image(s):
solid.png (23kb) downloaded 9 time(s).

You cannot view/download attachments. Try to login or register.
Back to top
andyww  
#9 Posted : Wednesday, April 12, 2017 8:38:57 AM(UTC)
andyww

Rank: Guest

Joined: 4/9/2017(UTC)
Posts: 5

OK I have this now. Doing a multi-select works.

Thanks!
Back to top
Users browsing this topic
Guest (3)
Forum Jump  
You cannot post new topics in this forum.
You cannot reply to topics in this forum.
You cannot delete your posts in this forum.
You cannot edit your posts in this forum.
You cannot create polls in this forum.
You cannot vote in polls in this forum.

Powered by YAF.NET 2.1.2 | YAF.NET © 2003-2024, Yet Another Forum.NET