topic Re: Chamfer errors - any alternative hack? in Fusion Design, Validate & Document Forum

Chamfer errors - any alternative hack?

steveVLDE4 — Fri, 30 Jun 2023 14:12:53 GMT

Hi All...a manufacturer is asking me for 3d files for my dxf. Only thing is some of the files produce errors check I try to chamfer the solid. I really don't want to try and redraw at this stage, and was wondering if there is any hack I can use to circumvent this issue?

Re: Chamfer errors - any alternative hack?

jhackney1972 — Fri, 30 Jun 2023 14:26:41 GMT

You would try a Sweep profile along the edge. Attach your model so others can take a look. 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: Chamfer errors - any alternative hack?

jeff_strater — Fri, 30 Jun 2023 14:31:34 GMT

Hard to say without the model, but this looks to me like it could be a case of a "near tangency" condition along the edge that you are trying to chamfer. Chamfer and Blend are both prone to failures when the input edges are close to tangent, but not completely so. How much control do you have over these designs? Can you modify them to try to fix this problem?

Re: Chamfer errors - any alternative hack?

HughesTooling — Fri, 30 Jun 2023 15:04:51 GMT

@steveVLDE4 wrote:

Hi All...a manufacturer is asking me for 3d files for my dxf.

For machining off a 3d model, modeled chamfers can be more trouble than they're worth! I'd ask if they'd rather have the model without chamfers and just indicate on the 2d drawings where you want chamfers.

For example none of the chamfers on this part are modeled. Far easier to pick edges and set the sizes in the CAM software. As you're getting someone else to machine your parts you'll need to create a 2d drawing and specify what edges to chamfer.

Re: Chamfer errors - any alternative hack?

steveVLDE4 — Fri, 30 Jun 2023 15:17:57 GMT

thanks, I think you are right it is 'near tangent' curves...I have found I can chamfer the model slightly to rectify this which is a good short term solution...

Re: Chamfer errors - any alternative hack?

steveVLDE4 — Fri, 30 Jun 2023 15:19:34 GMT

Yes perhaps you are right...for me it is CNC cutting carbon sheet - the chamfering post process...I don't put that into the model...but the shop asked me for 3d part to show the additional aspects of the design (countersink holes etc)....perhaps I can screenshot it and add indicators...