topic Re: How would you model this seemingly simple shape? (Modern wall hook) in Fusion Design, Validate & Document Forum

How would you model this seemingly simple shape? (Modern wall hook)

Anonymous — Sat, 26 May 2018 23:18:41 GMT

I can see there is a Helix with 0.5 revolutions.

Couple of things I'm having trouble with:

---Making the "bend" perpendicular. I believe this comes down to constructing a Helix with a "Helix Angle" of 45 deg. Not sure the best way to approach that.

---Transitioning from curved to straight areas.

(Will post my current progress a bit later)

https://design-milk.com/the-nordic-inspired-89-wall-hanger-by-eduardo-camara-and-patricia-ibanez/

Re: How would you model this seemingly simple shape? (Modern wall hook)

TrippyLighting — Sun, 27 May 2018 02:53:26 GMT

Here's one way to do it:

Re: How would you model this seemingly simple shape? (Modern wall hook)

Anonymous — Sun, 27 May 2018 19:20:15 GMT

Very nice work TrippyLighting. Not a method I would have thought of.

Re: How would you model this seemingly simple shape? (Modern wall hook)

lichtzeichenanlage — Tue, 05 Mar 2019 20:14:37 GMT

@TrippyLighting : I've worked on a similar design and droped it because of the bend was first going down like in your example. Is there a trick to avoid this? I would need at least one flat side. Just splitting the body didn't work out for me, because it will destroy the ability to chamfer / filet the sides.

Re: How would you model this seemingly simple shape? (Modern wall hook)

TrippyLighting — Tue, 05 Mar 2019 21:48:01 GMT

@lichtzeichenanlage I don't really understand the problem you are describing.

Re: How would you model this seemingly simple shape? (Modern wall hook)

lichtzeichenanlage — Tue, 05 Mar 2019 21:59:53 GMT

The bottom part is my problem. It's not straight. I need this for printing without support.

Re: How would you model this seemingly simple shape? (Modern wall hook)

TrippyLighting — Tue, 05 Mar 2019 22:16:34 GMT

Have you tried thickening it to the inside ?

😉

Re: How would you model this seemingly simple shape? (Modern wall hook)

lichtzeichenanlage — Tue, 05 Mar 2019 23:51:10 GMT

Ouch. Thx. I need this from time to time. I need to do more surface stuff. thx again.

Re: How would you model this seemingly simple shape? (Modern wall hook)

lichtzeichenanlage — Wed, 06 Mar 2019 17:29:12 GMT

@TrippyLighting Sry that I've to come back to this topic, but it didn't work out for me. Thickening to the inside only reduces the problem. If I extend the inner space to 50mm it breaks again. I guess I'm making something wrong, but I'm not able to find it.

Re: How would you model this seemingly simple shape? (Modern wall hook)

TrippyLighting — Wed, 06 Mar 2019 20:04:27 GMT

Considering that you'll use this for 3D printing, I would assume that having a perfectly consistent wall thickness is less of a concern.

As such I would not try to offset or thicken a single surface, but create separate splines and separate lofts for the inner surface and the outer surface and then create the connecting surfaces and stitch that together into a solid.

You'll have to control the spline handles individually and that will be a pita. This is a 3D spline and there are a couple of bugs at play that will make this a non-parametric and entirely unsatisfactory experience.

Re: How would you model this seemingly simple shape? (Modern wall hook)

Anonymous — Thu, 07 Mar 2019 00:14:08 GMT

My version.

Re: How would you model this seemingly simple shape? (Modern wall hook)

lichtzeichenanlage — Thu, 07 Mar 2019 21:47:01 GMT

Ok. Than it's not me. That's fine.

Re: How would you model this seemingly simple shape? (Modern wall hook)

lichtzeichenanlage — Thu, 07 Mar 2019 21:49:07 GMT

Interesting way. I've to play with int.

Re: How would you model this seemingly simple shape? (Modern wall hook)

TrippyLighting — Thu, 07 Mar 2019 21:56:36 GMT

@Anonymous this is actually much better than my version!

Re: How would you model this seemingly simple shape? (Modern wall hook)

Anonymous — Fri, 08 Mar 2019 09:25:21 GMT

This is my go at it. I found that by increasing the height of the coil you can get a perfectly flat side for printing. I think you would achieve the same effect by increasing the distance between the rectangle profiles in Zevster's last file.

Kelly

Re: How would you model this seemingly simple shape? (Modern wall hook)

Anonymous — Fri, 08 Mar 2019 10:09:39 GMT

The arms weren't quite perpendicular on the first one. These are 90 degrees now.

Kelly

Re: How would you model this seemingly simple shape? (Modern wall hook)

lichtzeichenanlage — Wed, 13 Mar 2019 18:07:16 GMT

@Anonymous : I played a bit with your last design but it's not working out for me. IMHO a crucial part of the design is, that the bend is tight and the "wings" are perpendicular to each other. But that's not working based on a coil. At least I'm only able to do it, if I just don't care about the distance between both parts. And that doesn't work for me either.

Re: How would you model this seemingly simple shape? (Modern wall hook)

Anonymous — Wed, 13 Mar 2019 19:37:57 GMT

What is your ideal distance between the wings and length of the wings?

Kelly

Re: How would you model this seemingly simple shape? (Modern wall hook)

lichtzeichenanlage — Thu, 14 Mar 2019 14:02:49 GMT

That differs. It's defined by the use case.

thickness: 8mm

wing length: 40mm

distance between: 50mm

thickness: 8mm

wing length: 30mm

distance between: 10mm

thickness: 40mm

wing length: 100mm

distance between: 40mm

Re: How would you model this seemingly simple shape? (Modern wall hook)

Anonymous — Wed, 20 Mar 2019 21:07:11 GMT

Had some very good results using Sheet Metal Contour Flange with a K Factor of 1. Added a small fillet to where the inside surface transitions from straight to curved.

(You can also use the bend tool, but due to the fact that bend originates all geometry from the inside surface, the outside surfaces tend to get distorted)