topic Re: Arc for polygon in Fusion Electronics Forum

Arc for polygon

silvio3105 — Sat, 16 Jul 2022 18:53:24 GMT

Hi,

I'm trying to create tCream with polygons. It's for SMD standoff footprint. Recommended stencile cutout is below.

I cannot create it because Miter command does not support both radius types. Image is below.

Re: Arc for polygon

jorge_garcia — Mon, 18 Jul 2022 20:29:01 GMT

I hope you're doing well. You could achieve the desired tStop opening using the polygon command with semi-circular bends. You have to calculate the 4 vertices of one of the slices and then make 3 rotated copies. See the attached image.

Let me know if there's anything else I can do for you.

Best Regards,

Re: Arc for polygon

silvio3105 — Mon, 18 Jul 2022 20:54:02 GMT

Thanks for image, but I need to create 1/4 of circle(see image from standoff datasheet in first post).
And I need tCream for stencile. So I've placed PTH but it does not generate stencile for it.

That could be another feature request - tCream for PTH.
Also, I can create DXF in AutoCAD and import it in Fusion. Reason why I opened this topic is to point that some features are missing - like in this case "negative" radius.

Re: Arc for polygon

jorge_garcia — Tue, 19 Jul 2022 18:13:13 GMT

Hi @silvio3105,

The circle image is just to give an idea of how you can make curved polygons since that would help you get the shape. I agree that we are missing drawing features.

Plated through holes don't generally get a stencil because the drill wicks the solder paste down into a hole.

Let me know if there's anything else I can do for you.

Best Regards,

Re: Arc for polygon

silvio3105 — Tue, 19 Jul 2022 20:32:59 GMT

I hope you wrote that info about drawning features 😛