topic Re: Scale object without changing thickness in Fusion Design, Validate & Document Forum

Scale object without changing thickness

timothytu07 — Thu, 02 Jan 2025 20:43:00 GMT

Hello, I am brand new to CAD modeling, and I have a question. Is it possible to scale this object without changing the strut thickness? I would like to make the entire body larger, but keep the 0.75mm thickness of all the struts. Currently, the entire width is 15.60, and I would like to increase it to 19.3125 but maintaining the original size of the components. Thank you.

Re: Scale object without changing thickness

jhackney1972 — Fri, 03 Jan 2025 00:01:14 GMT

I think you will have to remodel it but I interested in seeing the model first. Please Attach it.

If you do not know how to attach your Fusion 360 model follow these easy steps. Open the model in Fusion 360, select the File menu, then Export and save as a F3D or F3Z file to your hard drive. Then use the Attachments section, of a forum post, to attach it.

Re: Scale object without changing thickness

etfrench — Fri, 03 Jan 2025 07:40:12 GMT

Yes, just edit the dimensions in the sketches used to create it. It would be even better to use User Parameters.

Is this just defined by two different size squares?

Re: Scale object without changing thickness

TrippyLighting — Fri, 03 Jan 2025 12:04:35 GMT

Whether or not that works depends on how it was modeled. As others have suggested, please share your model in .f3d (or .f3z) format.

Re: Scale object without changing thickness

timothytu07 — Fri, 03 Jan 2025 23:30:41 GMT

See attached.

Re: Scale object without changing thickness

timothytu07 — Fri, 03 Jan 2025 23:31:13 GMT

See above. I did 2 patterns so if you undo it it will show it.

Re: Scale object without changing thickness

etfrench — Sat, 04 Jan 2025 02:35:05 GMT

Basically, you need to model two arms, one for the square and one for the triangle shapes. Using the split body command to isolate one leg of the square shows the length of the leg (before the scale command) is 14.7078 mm.

Start with a sketch for 1/4 of the arm:

Thin extrude it, trim the end to 45 degrees, and remove the excess:

Mirror it:

There are three angles on the end(s). Use the draft command to create them.

90 Degrees:

120 Degrees:

And 135 degrees:

Mirror it:

Parameter table:

Completing the X pattern, is just multiple circular patterns. Note: The axis for X pattern must use a formula based on the length of the arm. The length of the triangular arm must also be a formula based on the length of the X arm. Repeat the process for the triangular body. Model it at the center of the X body.