topic Re: odd sketch behavior in Fusion Support Forum

odd sketch behavior

CasettaMichael — Thu, 03 Sep 2020 18:40:25 GMT

when i change the size of a hole a unrelated measurement flips . This flipping of a measurement happens in other circumstances https://autode.sk/32OZoDS

Re: odd sketch behavior

CasettaMichael — Thu, 03 Sep 2020 19:01:46 GMT

This is a link to a copy of this part..https://a360.co/2F62JGA

Re: odd sketch behavior

jhackney1972 — Thu, 03 Sep 2020 21:21:56 GMT

I cannot explain it but if you erase and re-dimension the indicated dimension, using your parameter or not, and the problem disappears. I would love to see what @jeff_strater thinks the reason this is happening.

Re: odd sketch behavior

davebYYPCU — Thu, 03 Sep 2020 23:27:30 GMT

Fully constrained but unstable.

It flips because there are 2 legitimate solves,

Not shown in the video as a problem, but this socket moves with that flip, too.

Your sketch is so complicated that you missed this in your explanation, but is it deign intent?

Surely all the dog bones with the same cutter are tied? I see the other end of the bar is .438 and independent.

Dimension from the origin will help.

Re: odd sketch behavior

davebYYPCU — Thu, 03 Sep 2020 23:43:40 GMT

An easy fix, (D1 - met_ref)

Might help....

Re: odd sketch behavior

CasettaMichael — Fri, 04 Sep 2020 14:37:50 GMT

thank you for your investigation. Yes the movement of the back slot reacted as expected. (design intent). It is linked to the front of the parts cut out.