Bug on sketch with invisible constrains

[bernasacardoso]

Hi! It seems that is a bug on the sketch of fusion360.

The bug it's the follwing:

When i create a line or circle and i select a point to set it on, after that i cant take off the coincident constraint.

The only way to, for example, get the circle bigger, like the example that i showed, is by deleting and making one bigger and then selecting the constraint, thats the only way to show the constraint otherwise its gona be invisible. The problem is that if you have other operations related to that extrusion for example the other operations dont know what plane to use.

[g-andresen]

Hi,

What do you want to achieve?
Should the new circle be oriented to the body (e.g. diameter) or only use its center point.

Please share the file.

File > export > save as f3d on local drive  > attach it to the post

günther

[bernasacardoso]

Hi!

The objective is to get a bigger diameter (e.g. 20mm), without deleting de circle, and still be centred to the herringbone sprocket.

Thanks for the attecion! If you know some way to solve that i'll be very grateful!

[g-andresen]

Hi,

Options:

1. concentric via projected center and independent in dimension 

2. related to existing body in center and diameter via offset

günther

[bernasacardoso]

Hi! im verry grateful for the response, but the problem is that if you add an circle via offset you're creating another extrusion. My objective is to chance de diameter of the circle after clicking on a point in the "project geometry" option.
I really think its a bug, I presume that the software creates an coincident constraint to that point and then I can't edit that constraint because its invisible.

[g-andresen]

Hi,

I don't really understand your point.
But, the purpose of a projection is to create a dependency to an existing object with the goal that subsequent objects follow the changes of the primary object. But if a relationship to this projection is "edited", the dependency to the primary object no longer exists either.

günther