Subpatch video - how to create threads on a bottle / screw

[JeffrySG]

Creating bottle / screw threads using subpatch / subdivision surface modeling -
This video shows how to create the threading you would find on a bottle or a screw using supatch / subdivision surface modeling. The video also demonstrates how to fix a few common problems that may arise during the modeling process. The final lwo model (which is available for download) is composed of all quads.

Application: Lightwave 9.3 / File size: 28.3MB / Length: 17:30

New video
http://www.pixelandpoly.com/video005.html

All of the videos:
http://www.pixelandpoly.com/video.html

enjoy!
Jeff

[oldtekerr]

Nice job... Dont you hate when something you have had work a thousand times decides not to work...

[JeffrySG]

Totally... I ran through this about four times and never had that happen to me after the solid drill. And actually that that was the first time I had that 2 point poly show up too. But I figured that maybe other people will run into the same thing so I just left in those problems and fixed them on the video. It kind of throws me for a loop when that happens when I'm recording, though! lol

After things like this I have even more respect for all of Proton's videos!

[oldtekerr]

Originally Posted by JeffrySG

After things like this I have even more respect for all of Proton's videos!

Yes me too... He is a machine.

[WilliamVaughan]

This came from a discussion JeffrySG and I had on another forum:


Creating a model with threads using subpatches and all quads:
Click Here to view

[JeffrySG]

Thx for posting that William. (When I asked to see that method I wasn't expecting to see the video within the hour lol!)

I really like that method as well!

[WilliamVaughan]

I get excited by this stuff too easily :P

[Silkrooster]

Excellent videos. I have to admit sub patched threads do look much better, especially for plastic.
Silk

[Surrealist.]

Thanks Jeff. I enjoyed that. Nice technique.

[Nangleator]

William, my Edge Bevel operation seems to distort my mesh away from base cylindrical shape. (My attempt was a bit more extreme than yours, but it doesn't seem to happen in your video.)

In other words, my newly created polygons don't have parallel normals to the existing ones.

Is this a feature you hid with the subtlety of your threads, or did you minimize it with a carefully chosen number of segments in your mesh?

[WilliamVaughan]

Originally Posted by Nangleator

William, my Edge Bevel operation seems to distort my mesh away from base cylindrical shape. (My attempt was a bit more extreme than yours, but it doesn't seem to happen in your video.)

In other words, my newly created polygons don't have parallel normals to the existing ones.

Is this a feature you hid with the subtlety of your threads, or did you minimize it with a carefully chosen number of segments in your mesh?

Strange...I dont get that here...can you post a screen grab of before and after...also show what your selection is..

[Nangleator]

Selection:



A little distortion from Edge Bevel:



A lot more:



Top down view:



I don't know that this is actually a problem. The screw ended up looking pretty good.

[JeffrySG]

If you look very closely it does distort very slightly away from parallel on Williams video as well during the bevel process. I thing that is just how LW handles the bevel operation. Maybe try using Rounder instead with a setting of 1 on the rounding polys to see if it has some less distortion. ? .

[Nangleator]

Originally Posted by JeffrySG

If you look very closely it does distort very slightly ...

Okay, I didn't look close enough. And I think it averages out to cylindrical, anyway.

Nice idea with Rounder, though.

[WilliamVaughan]

never noticed it. Edge Bevel does distort a bit but rounder doesnt at all...good call JeffrySG