topic Re: Sketcher Help, Lock to Referenced Objects in Fusion Support Forum

Sketcher Help, Lock to Referenced Objects

jacob.rogers1 — Sun, 20 Mar 2022 01:39:10 GMT

Long time Creo user here, how do I lock the construction line to the origin? It's probably operator error but the way I'm used to modeling, I should be able to reference that vertical plane in sketcher to constrain my sketch and I shouldn't even need that construction line. It seems like Fusion is perfectly happy with things just willy nilly placed in space with nothing referenced.

Re: Sketcher Help, Lock to Referenced Objects

davebYYPCU — Sun, 20 Mar 2022 03:16:53 GMT

Some mixed terms there.

The green vertical line has to be unlocked to move it.

Correct, you don’t need it, if

you make the lower top end point, vertically constrained to the origin.

Most sketch tools will snap (with blue snap cursor glyph), to the Origin, with

Snap ticked in the sketch palette.

Might help.....

Re: Sketcher Help, Lock to Referenced Objects

jacob.rogers1 — Sun, 20 Mar 2022 04:03:51 GMT

I'm not sure about the mixed terms but in three dimensions your sketch plane is one reference, the other two planes become your reference for x and y. I can not reference the solid green line with any constraint which would locate my sketch in x. In other words, I can not constrain the bottom of my sketch to the x plane because it is not available to be referenced.

In Creo I would add it as a reference and then be able to use it for sketch definition, from what I'm seeing Fusion doesn't allow you to do this.

Re: Sketcher Help, Lock to Referenced Objects

hamid.sh. — Sun, 20 Mar 2022 08:25:28 GMT

@jacob.rogers1 wrote:
... I can not reference the solid green line with any constraint which would locate my sketch in x...

Is this what you want?

If so then as @davebYYPCU said you should Unfix your green lines, and use coincident constraint between origin and bottom of your sketch. However, perhaps while drawing the circles two automatic coincident constraints between their centers and origin have been made which must be deleted first. Check this screencast, file is also attached.

Not that for above sketch this is needed at all, because again as @davebYYPCU said you can use origin, but anyway it's possible to Project any plane on the sketch. See this screencast.