@mcdanlj@social.makerforums.info
@mcdanlj@social.makerforums.info avatar

mcdanlj

@mcdanlj@social.makerforums.info

1st Fedora Project Lead. Co-author Linux Application Development. Sr. Director Engineering Pendo. Ex-{Linux Journal, Red Hat, rPath, SAS}. Christian. Father. Maker (including machining, 3D printing, and electronics). Books. Classical music. Aviation (inactive PP-Inst-SEL). https://musings.danlj.org/

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smellsofbikes, to random
@smellsofbikes@mastodon.social avatar

A dubious idea I have about cutting curved dovetails so a box would look like an impossible dovetail box, but would in fact have the top open on an arc rather than a diagonal slide like most impossible dovetails.
The axis of rotation is the left corner, where there's a green line.

mcdanlj,
@mcdanlj@social.makerforums.info avatar

@chrishuck @smellsofbikes I just pushed a fix to my model. I had somehow gotten a sketch attachment not parameterized. Now the box resizes when the parameters are changed.

My model with 200mm square plan

mcdanlj,
@mcdanlj@social.makerforums.info avatar

@kbob @smellsofbikes @chrishuck Never having taken analytic geometry, I am not equipped to find the chord mathematically, even though I can model it concretely.

I haven't figured out how to model it in a robust parametric way. An analytical solution would let me use expressions to determine cutter angles for each surface parametrically, so if anyone wants to contribute those expressions I'm all (virtual) ears. Besides an analytical solution, it's possible that the TNP mitigations could make a model sufficiently robust in practice to allow configuration.

For recording iterative solutions, I could reasonably set up multiple configuration tables, including one just for the combinations of parameters that impact dovetail edge shape, and keep that separate from other configuration.

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