Moving a cut out created using a solid primitive

[Anonymous]

Ok - I am certainly a nube to F360, but I managed to get a part modeled. This part has a semi-circular cut out across the part running in the x axis. I tried creatining a sketch on the z x face of teh part to locate a circle, then tried to extrude it through the part, but it would not let me extrude it. I ended up having to create a cylinder located at teh center point of teh circle and subtracting it. That worked, but i didn't get it exactly where it needed to be. I adjusted the dimensions on the sketch that created teh center point, but the cut out did not move. How can I move the cut out? I assume that if I had been able to extrude the circle, it would have been constrained tot he sketch, but apparently the cylinder was not constrained to the sketch for some reason? I have attached a snip of the part.

Thanks,

Dan

[jeff_strater]

Hi @Anonymous,

Yes, you are correct.  Primitives such as Cylinder are not associative in this way.  The sketch is created only for creating the primitive, then dropped afterward.  Primitives are currently intended to be simple tools just for concept experiments.  We do have a project to make them more associative, but it's not available just yet.  If you need associativity, I'd recommend creating a sketch, then draw a circle, constrain it as needed, and use Extrude.

Jeff Strater (Fusion development)

[scottgwade]

I know it's an old question (but I found it via google in 2021!) I wanted a better answer:
Jeff is correct in that you cannot move the "temporary" primitives created, such as a cylinder used to cut into a body. You can go back and edit certain features of it (depth, etc) but not position. However there is a workaround!

You can go back on your timeline to where you created that primitive and change it from "cut" to "new body".  Now that it's a new body it now has position information that can be edited.

Once you've made your position changes you can then change its type back to "cut" and (fingers crossed) you won't have totally screwed up your timeline.