Tapered Cylinder with ribs (Knob)

jeremy_irwin

Hey All! I'm trying to model a knob that has tiny ribs all the way around. I can make the part as a straight cylinder but can't then draft it to create a slight taper. To make the knob wider at the base.

I started with a circle, added a tiny triangle to the edge and then used circular pattern to get my start and then extruded. But can't then draft it to make the whole thing tapered. I've also tried extruding a cylinder, adding a draft to it, and then removing the circular patterned triangle from the top, but I can't seem to get it to follow the slope. 

Any help you can lend?

mahir

Here's one way. Extrude a circle with draft. Extrude a rib cut with draft. Circular pattern.

https://cad.onshape.com/documents/79bb5bbcdf5ad9168e2a302a/w/15e7e332a679b5b274b98f7b/e/6d14eaa20c933d27498dc7b3

EvanReese

here's another way with a loft. https://cad.onshape.com/documents/2f1a47cc2ef54663214dcef7/w/4c2f4b14018665c9073424e6/e/84b259358dc5335046f366b5

steve_shubin

And another way

https://cad.onshape.com/documents/d6ac197a1578bbb74b780fa5/w/5443155d2f9dc25b38144419/e/da2f3875d887b0fe7e81d018

mahir

And another. Really there's too many methods and the best one will depend on the the specifics of your project. Although, I tend to lean toward shorter/simpler feature trees.

https://cad.onshape.com/documents/79bb5bbcdf5ad9168e2a302a/w/15e7e332a679b5b274b98f7b/e/2dc77b473c5bb3791b054e32

john_mcclary

steve_shubin said:

And another way

https://cad.onshape.com/documents/d6ac197a1578bbb74b780fa5/w/5443155d2f9dc25b38144419/e/da2f3875d887b0fe7e81d018

You got my vote for prettiest knob

EvanReese

john_mcclary said:
You got my vote for prettiest knob

Didn't know it was a competition: https://cad.onshape.com/documents/eaad8fc82d2814f7d8adac97/w/c36da4f0da406a6250e1fea2/e/5ada2f471571c8cbc2abcda8

steve_shubin

john_mcclary said:

You got my vote for prettiest knob

Fillets have a way about themselves that elucidates such a response

Actually I think @Evan_Reese latest entry has got mine beat by quite a bit. That is slick

steve_shubin

When @mahir said there’s too many ways that it could be done, well that actually put a smile on my face.

And with Evan’s latest model, I thought — it would be pretty cool if everybody joined in on this

Myself — I love seeing other peoples work. I’d like to see however many models an individual would like to post 

I think this whole thing should be based LOOSELY upon the original posters requirements. And I would stress loosely. Because I sure wouldn’t want to put a damper on somebody’s creativity

So if other people are interested, then how about posting something for others to see.

Show us your creativity. Show us your techniques. Show us your style or the beauty in the simplicity of your design. Show us how you are able to incorporate some of the really cool featurescripts. I can picture some of Evans patterning tools coming into play here. Show us the brevity of your feature tree. Show us any stinkin thing !!!

And to the professional users — show us some renderings if you feel so inclined

So to all the pros, to the hobbyists, to the educators and students, and to the Onshape employees, what say?

Are you guys game?

And the rules of the game should be this ——

Post what you got

Let us see your work

That’s it

That’s it in total

Nothing more — nothing less

Just let us see what you got

Whatever you want to hone in on or emphasize whether it be beauty or technique or whatever, COME ONE, COME ALL

Just give us at least a half serious effort  — even if you have a silly grin on your face while you’re making the model

steve_shubin

https://cad.onshape.com/documents/a96bd2dd924f3d9097482c9b/w/6341d3bba4b7ae3a477df14c/e/c2bbb9ee7f220d99d2fa628e

EvanReese

haha I like it. I don't have much time for a new one, but here's one I modeled a few years ago that I thought was fun and interesting:
https://cad.onshape.com/documents/eaad8fc82d2814f7d8adac97/w/c36da4f0da406a6250e1fea2/e/212f8f23bdcd0ea3454d7780

steve_shubin

@Evan_Reese

That last one of yours is a wicked looking little knob
I like it

Here's my latest
Would not be surprised if the feature tree could be whittled down on this one
I'll look at it latter.

https://cad.onshape.com/documents/50bf387ad5e7b774e46575f0/w/cc4f4a11a368869a9a93ff0b/e/f53b13c38cedab5565f893da

robert_scott_jr_

YES! Please post. To me this (as well as other model posts) is an opportunity to learn techniques, methods, work flows, etc. - Scotty

P.S. Love those 'I didn't know you could do that' moments.

bryan_lagrange

This is post is an Onshape modeling dance off.  your turn @Evan_Reese

EvanReese

@bryan_lagrangehttps://cad.onshape.com/documents/eaad8fc82d2814f7d8adac97/w/c36da4f0da406a6250e1fea2/e/d43ff8eb9c9db6ab8a94a532


We need some more people in here! @alnis, @MichaelPascoe, @romeograham, @john_mcclary
 what you got?

steve_shubin

Evan_Reese said:

We need some more people in here! @alnis, @MichaelPascoe, @romeograham, @john_mcclary
 what you got?

EXACTLY !!

I mean I thought it would be really cool if we came up with a ton of different ways to do knobs. Just for the fun of it !

It’s not a competition. It’s just a fun thing

Come on now — with Pascoe doing moldings and corbels and decorative columns … who knows what he would come up with

And don’t tell me McClary doesn’t have something lurking up in that grey matter

Good time to practice your Onshape smart phone skills on a Saturday if you’re kickin back. That screen will work fine for a knob

And yeah — how about you other guys
Romeo, Bryan, Alnis, Bruce, Robert

And how about Neil

This is a come one — come all

john_mcclary

Well, I suppose I could throw in some of my older knobs...
Guitar | Guitar (onshape.com)




But if you want me to try something new, then:
Knob | Assembly 1 (onshape.com)

steve_shubin

OK McClary’s got the ball rolling now with some real good stuff.

I was lousy with names from the day I was born so don’t wait for a personal invite.  Just jump on in

alnis

@Evan_Reese thanks for pinging me, I would have missed it otherwise!

Here is my attempt:
https://cad.onshape.com/documents/cb1ca78a8edcac5785d1b608/w/6bd4905285cb95de89a158bc/e/29ccbbad9bcc3b99bc91f0bf

steve_shubin

I see that the @alnis amp goes up to eleven

belly laugh

MichaelPascoe

For @Evan_Reese & @steve_shubin

"You feel the quality of this heavy knob in your hand as you slowly turn it left to right. You are filled with determination."
 
                 

https://cad.onshape.com/documents/47811bbf707d691cb1c4e59d/w/6b0f46315079db3baaf25ad9/e/251b5a549a96c8ab3f3d26d7?renderMode=0&uiState=62af2dc275d0e54c98173bf9

alnis

Thanks Steve! It's so fun to see what everyone else has made. Every design here is cool in a different way, whether that's elegance, simplicity, creativity, etc.

steve_shubin

@alnis
@MichaelPascoe

One of the best scenes out of movieland

https://m.youtube.com/watch?v=hW008FcKr3Q

You guys really pay attention to the detail
Beautiful work

bryan_lagrange

This is fun to see all the cool submissions 

dirk_van_der_vaart

Only 6 features, 5 minimum
https://cad.onshape.com/documents/49a2142c99984492c60f0a5a/w/63affa5a03b121d622dec54b/e/c2921a7dd52be21007f13a1c

bryan_lagrange

@Evan_Reese

Here is my entry......Onshape Star Knob

EvanReese

It's fun to see so many people tossing things in here. @jeremy_irwin hopefully this more than answered your question 

I've got one more. I'm getting pretty far from the brief at this point, could be a 3D printed drawer pull. A bit maximal for my taste, but I'm having fun.
https://cad.onshape.com/documents/eaad8fc82d2814f7d8adac97/w/c36da4f0da406a6250e1fea2/e/9b10240709eb92c3a2931ecf

S1mon

@Evan_Reese

Looks like you built that Profile Sweeper you were talking about a while back. Any plans to officially release it?

steve_shubin

Nice job Dirk. How those rounded ribs get thinner and how they terminate under that cap, I really like that. That’s a very nice detail. Elegant design. And in six features no less. Yikes

Now Bryan’s — I want one of those. In fact I want a dozen of those.

That’s the kind of knob that would allow me to really crank it down. That thing looks like you could put it on the hardware store shelf right now and people would be swoopin that thing up

And Evans latest — well the man has gone wild. The picture had me just staring at that sucker trying to figure out — how in the world did he do this !

Well here’s my latest. It only took me about 8 or 9 times as many features as Dirks. LOL. I’ve got to figure out how to model in less steps !

I probably should’ve did a circular pattern in assembly for all the small parts but the part studio was working fine so I just did it in there

https://cad.onshape.com/documents/2b093a479b10cbc6077bc990/w/1f45f980d5728d09607fc220/e/61d764480e97c6c4865a4566

EvanReese

S1mon said:

@Evan_Reese

Looks like you built that Profile Sweeper you were talking about a while back. Any plans to officially release it?

Very observant. I'd hoped to make it the subject of a FS tutorial series and release them together, but not sure when that will be. Now the real question is are you going to model a knob?

jeremy_irwin

You guys rock! Thank you for your help (and for showing me how far I still have to go . @mahir I don't understand how you got "circular pattern" into your feature list. I can only do it from a new sketch but it doesn't give me all of the same options.