topic Re: Hole types and 3D model in Fusion Electronics Forum

Hole types and 3D model

warren_hawkins57R37 — Tue, 03 Sep 2024 15:51:22 GMT

Would it be possible to add support for countersink, counter bore, and maybe chamfer hole types? I'd need to choose the angle and depth for countersink and diameter and depth for counter board. Plus the side, I assume, could be mirrored to flip.

At the moment I have to do some hacks to generate gerbers that can be counter sunk and I don't have a proper 3D model.

Also I find that I can't do much with 3D PCB's. It would be nice if there was a way to convert them to a regular mechanical model without exporting to step and importing.

Re: Hole types and 3D model

jorge_garcia — Tue, 03 Sep 2024 17:14:45 GMT

Hi @warren_hawkins57R37,

This is an interesting idea, PCBs are so thin that contersinking and counterboring are generally not feasible. That's why I've never seen that feature requirement before.

Could you elaborate on what you are trying to do with your PCBs?

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

Best Regards,

Re: Hole types and 3D model

warren_hawkins57R37 — Tue, 03 Sep 2024 17:18:00 GMT

We do this all the time. We use 3mm and 6mm or 0.25 inch etc. boards as structural members sometimes.

By the way Altium has this feature.

Re: Hole types and 3D model

jorge_garcia — Tue, 03 Sep 2024 20:58:14 GMT

Hi @warren_hawkins57R37,

The most common PCBs are 1.6mm thick so 3mm and 6mm are more specialized. In that circumstance, the requirement makes a lot of sense. I'll put in the feature request for you.

P.S Do you have any pictures of the boards with the drills countersunk? It would be interesting to see an example.

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

Best Regards,

Re: Hole types and 3D model

warren_hawkins57R37 — Wed, 04 Sep 2024 13:37:28 GMT

Here is an example.

Re: Hole types and 3D model

baumanntCXKFK — Fri, 20 Feb 2026 19:14:07 GMT

Hello! I also need countersunk holes in PCBs. For small fasteners there should be no issues in using countersunk holes, even if the PCB is 1.6 mm. I think this is absolutely needed! Is there any progress on this request?

Thanks!

Re: Hole types and 3D model

jorge_garcia — Fri, 20 Feb 2026 20:58:19 GMT

Hello @baumanntCXKFK ,

I hope you're doing well. Unfortunately, I don't have anything new to report on this front but I have bumped the ticket with your comments.

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

Best Regards,

Re: Hole types and 3D model

warren_hawkins57R37 — Fri, 20 Feb 2026 21:02:45 GMT

The work around I have been using is to add a circle in a user layer for each countersink. Then add to the cam job to make a new gerber for countersinks. You may need two layers one for top and one for bottom. Then I do a CAD drawing to detail the countersink angle and depth etc. If you need a 3D model you'll have to export the PCB to step then import it again. Then you can add a mechanical countersink to it.

Re: Hole types and 3D model

warren_hawkins57R37 — Fri, 20 Feb 2026 21:12:11 GMT

Sometimes I have more than two layers when I need different size countersinks.