IssueRaiser

SDFs are very neat up until the point where you need to build parts that have very precise specifications.

SDFs are very neat up until the point where you need to build parts that have very precise specifications. Something like two precisely interlocking gears with a tooth geometry with a profile that's the developed curve of the opposite tooth is a nightmare to build with SDFs Or precise fillets. Or hard intersections and differences. Very useful for doing soft, squishy shapes, less so for hard CAD. Also, a suggestion: in your project, please consider using Wavefront OBJ as an output format, it is a much, much better choice than STL (STL can't represent the actual topology of the object, it has to be reconstructed).

Posted by ur-whale on Dec 21, 2025, 4:00 AM

Tags

Related issues

Raise real-world problems, find people facing the same issue, and discuss solutions.2,000 issues0 comments

hackernews (Other)

SDFs are very neat up until the point where you need to build parts that have very precise specifications.

ur-whaleDec 21, 2025, 4:00 AM

SDFs are very neat up until the point where you need to build parts that have very precise specifications. Something like two precisely interlocking gears with a tooth geometry with a profile that's the developed curve of the opposite tooth is a nightmare to build with SDFs Or precise fillets. Or hard intersections and differences. Very useful for doing soft, squishy shapes, less so for hard CAD. Also, a suggestion: in your project, please consider using Wavefront OBJ as an output format, it is a much, much better choice than STL (STL can't represent the actual topology of the object, it has to be reconstructed).

Comments (0)

No comments yet. Start the discussion.

Comment on this issue