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
Bending a twist... Moebius (#4429)
Options
Go to last post Go to first unread
Previous Topic Next Topic
Thor  
#1 Posted : Wednesday, July 18, 2012 10:30:50 AM(UTC)
Thor

Rank: Junior Member

Joined: 1/4/2012(UTC)
Posts: 6
Hi - So I have searched for this - and can't seem to figure it out, so I am asking for help.

I am trying to make a Moebius strip, very simple really, but not...

So, I take a strip, flat but with some thickness, I twist it 180 degrees down the center - so far, so good.
Now I want the ends to meet, so I bend it 360 on the side and my headache starts...
Also tried bending to a line, both a circle and an arc - no luck.

[ATTACH]4464[/ATTACH]

[ATTACH]4465[/ATTACH]

Any thoughts? I'm stuck here.

Ok, this is the best I have gotten - ends do not meet, the look is good - but closed would be better... :-)

[ATTACH]4466[/ATTACH]
File Attachment(s):
moebius work Twist.vcp (40kb) downloaded 5 time(s).
moebius work 2.vcp (83kb) downloaded 5 time(s).
moebius work Twist and Bend.vcp (81kb) downloaded 5 time(s).

You cannot view/download attachments. Try to login or register.
Back to top
rockyroad_us  
#2 Posted : Wednesday, July 18, 2012 3:22:55 PM(UTC)
rockyroad_us

Rank: Senior Member

Joined: 9/12/2009(UTC)
Posts: 608
Man
United States
Location: In my place

Was thanked: 59 time(s) in 51 post(s)
You need the advanced feature bend along curve.
rockyroad_us attached the following image(s):
moebius.jpg (26kb) downloaded 5 time(s).

You cannot view/download attachments. Try to login or register.
FX 7-FXPro14-1650
MacPro 11.7.4
2x2.8GHz Quad Xeon 32GB
NVIDIA 4 K5000 4GB
Work
Back to top
WWW
blowlamp  
#3 Posted : Wednesday, July 18, 2012 4:28:46 PM(UTC)
blowlamp

Rank: Senior Member

Joined: 6/28/2008(UTC)
Posts: 648
Here's a video of a quick way to do one that should also work with more complicated paths.

http://screencast.com/t/kf3bj4V3Da0


Martin.
Back to top
billbedford  
#4 Posted : Thursday, July 19, 2012 2:22:51 AM(UTC)
billbedford

Rank: Senior Member

Joined: 2/19/2007(UTC)
Posts: 186
Even simpler would be to start with a circle and use a one rail sweep solid with a 360 deg twist.
Back to top
blowlamp  
#5 Posted : Thursday, July 19, 2012 3:35:25 AM(UTC)
blowlamp

Rank: Senior Member

Joined: 6/28/2008(UTC)
Posts: 648
Agreed, Bill.

I'm not sure why I made it so long-winded, I didn't even need to rotate the polygon about the Y axis for the purpose of the demo - must've been a mental block :)



Martin.
Back to top
rockyroad_us  
#6 Posted : Thursday, July 19, 2012 7:20:01 AM(UTC)
rockyroad_us

Rank: Senior Member

Joined: 9/12/2009(UTC)
Posts: 608
Man
United States
Location: In my place

Was thanked: 59 time(s) in 51 post(s)
Good call bill.

I forgot about the twist on the one guide rail.
FX 7-FXPro14-1650
MacPro 11.7.4
2x2.8GHz Quad Xeon 32GB
NVIDIA 4 K5000 4GB
Work
Back to top
WWW
Thor  
#7 Posted : Thursday, July 19, 2012 8:56:00 AM(UTC)
Thor

Rank: Junior Member

Joined: 1/4/2012(UTC)
Posts: 6
Martin, that is brilliant. And you got the degrees right, a 360 twist would not make it moebius...
Thanks, that is a completely different approach than mine, and far better.
Learning stuff.
Back to top
gibbo_gt40  
#8 Posted : Friday, July 20, 2012 9:03:38 AM(UTC)
gibbo_gt40

Rank: Junior Member

Joined: 12/29/2011(UTC)
Posts: 2

Was thanked: 1 time(s) in 1 post(s)
Originally Posted by: billbedford Go to Quoted Post
Even simpler would be to start with a circle and use a one rail sweep solid with a 360 deg twist.


One sentence and I learnt so much, the single rail tool and the gripper.

Thanks
File Attachment(s):
twisted_hexagon.vc3 (37kb) downloaded 7 time(s).

You cannot view/download attachments. Try to login or register.
Back to top
Users browsing this topic
Guest
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