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JBT27
04-18-2010, 05:05 AM
I must have a mental block or over-thinking or both, and I used to have a tut for this, but I am spending way too much time trying to figure how to make the bevel on a nut, like these:

http://image.made-in-china.com/2f0j00beCaPnyJMpkV/Nut.jpg

I'd appreciate any clues and pointers.

Thanks.

Julian.

moussepipi2000
04-18-2010, 06:20 AM
have you tried "rounder" in point mode? not edge

JBT27
04-18-2010, 06:43 AM
have you tried "rounder" in point mode? not edge

I hadn't - thanks for the idea - but it's not giving the right result and the corner rounding is a bit messy.

I'm thinking that a quad mesh with a weight map might do it, or model one segment then Radial Array it .....

Don't know - maybe this is one of those that looks simple but isn't ..... it's caught me out anyway :)

Julian.

BigHache
04-18-2010, 07:10 AM
Recently I've been using LWCAD for any rounding that I need, because it allows you to set varying rounded radii for different edges.

zardoz
04-18-2010, 07:26 AM
well, you can try this

001. start with a cylinder with 6 sides
002. create a sphere (24 sides) and intersect it with the cylinder
003. this is what you get
004. flatten the polygons at the top
005. delete the side polygons

zardoz
04-18-2010, 07:29 AM
006. using the statistics pannel choose the polys with more than 4 vertices and fix them (for subpatch later)
007. select this edge loop
008. and extrude and flatten it
009. delete the tris pole and choose the inner loop and also extrude and flatten it
010. select this loop and use bandsaw with cuts at 95 and 5%

zardoz
04-18-2010, 07:32 AM
011. the loop after bandsaw
012. do the same to this loop
012a. the cuts in bandsaw
013. do a single cut in this loop at the top (with bandsaw at 5% OR 95% it depends)
014. another single cut in this loop of polys too

zardoz
04-18-2010, 07:33 AM
015. hit tab to subpatch it

you can now mirror it in the y axis to get the final object
now you must tweak the final shape, but basically it's something like this I guess.
I hope this helps.
cheers

JBT27
04-18-2010, 07:49 AM
Yes - that helps alot Zardoz - thank you very much indeed :thumbsup:

Nice and simple and elegant - guessed it would be - just couldn't see it :D

And as BigHache says, LWCAD is good for rounding because of the varying radii ability - use it all the time.

Julian.

Riff_Masteroff
04-19-2010, 10:20 AM
I used a Blender to LightWave workflow for creating a "library" of threaded objects. And I did post the library for all to use. Actually I posted three versions with a fourth version (with new cotter pins and eyebolts) to be posted if anyone is interested. The contents were created with a combination of LightWave and Blender modeling. Read the thread for specifics. The nuts come with a internal threaded version and without internal threads.

http://www.newtek.com/forums/showthread.php?t=106779

JeffrySG
04-19-2010, 12:23 PM
This is also a place where subd modeling works well... if you don't want a subd model you could always freeze the mesh and then clean it up a bit too. (see last pic)

cage
84160

smoothed
84161

refined
84162

Hopper
04-19-2010, 12:43 PM
I actually use this tutorial. It's very thorough, and is geared toward creating a model that will animate with a corresponding bolt.


http://www.final3.com/html/tutorials/nut.htm

http://www.final3.com/images/resources/tutorials/nut/done.jpg

It's not in LW, but the tutorial is pretty app-agnostic.

nemac4
04-19-2010, 12:44 PM
If you do a lot of these, then QuickBolt might be a good option:

http://www.iemedia.co.uk/product/plugins.htm

Riff_Masteroff
04-19-2010, 11:45 PM
Its always a great "power" to model anything at all from basic techniques. The postings on this thread should be of great help to all needing threaded stuff/nuts/bolts etc.

But . . . sometimes . . . in the heat of a deadline . . . its nice to access other work arounds . . . . such as the revised threaded library I posted a few minutes ago:

http://www.newtek.com/forums/showpost.php?p=1010204&postcount=17

JBT27
04-20-2010, 01:35 AM
Its always a great "power" to model anything at all from basic techniques. The postings on this thread should be of great help to all needing threaded stuff/nuts/bolts etc.

But . . . sometimes . . . in the heat of a deadline . . . its nice to access other work arounds . . . . such as the revised threaded library I posted a few minutes ago:

http://www.newtek.com/forums/showpost.php?p=1010204&postcount=17

I hadn't seen these up until now - that's very generous - thank you.

Considering I only posted to get a quick-fix for a nut for a medium shot, there's a ton of good and useful stuff here, as ever on these forums.

Thanks to all!

Julian.

meshpig
04-20-2010, 01:44 AM
I must have a mental block or over-thinking or both, and I used to have a tut for this, but I am spending way too much time trying to figure how to make the bevel on a nut, like these:


No time out = burn out:)

JBT27
04-20-2010, 01:47 AM
No time out = burn out:)

Too true, too true ..... too late :D

Julian.