Is There an Offset/Delete Function?

larry_hawes

I am in the habit (right or wrong) of needing to adjust 3Dn printed parts incrementally until the part is correct for it usage. The method I've been using is an offset. sometimes rather small to sneak up on perfect fit but the offset feature leaves the original sketch line intact and bit on the way. Is there anther method that will both offset and delete the original sketch line?

Probably doesn't need a video but here's the question below.

http://www.youtube.com/watch?v=8S-6igdCLsQ

konstantin_shiriazdanov

I would leave the sketch with it nominal geometry and use move face feature on the part faces

konstantin_shiriazdanov

I would leave the sketch with it nominal geometry and use move face feature on the part faces

larry_hawes

Thank you Konstantin, I moved the faces of the corresponding parts as well and it was much more flexible than I thought it would be. Are there any downsides to the technique??

konstantin_shiriazdanov

I don't think you would face any more problems compared to offsetting sketches. You should only keep in mind that offset face takes an offset value in face normal direction, while when offseting sketch contours it will not necessarily be the same offset value in face normal direction.

One more approach is to use boolean subtract with offset option, if you need to set backlash for the fit of one entire part in anorher one.

larry_hawes

konstantin_shiriazdanov said:

..."You should only keep in mind that offset face takes an offset value in face normal direction, while when offseting sketch contours it will not necessarily be the same offset value in face normal direction."

That's interesting...offsetting a sketch by .02" is not necessarily the same offset as a 'move face in normal direction. That's a bit difficult to grasp.

lana

That's interesting...offsetting a sketch by .02" is not necessarily the same offset as a 'move face in normal direction. That's a bit difficult to grasp.

If you are extrude or revolve sketch then offset in plane is the same as face offset because face normal is parallel to the sketch plane. But if you extruded with draft (e.g.), face normal is at the draft angle to the sketch plane and face offset will be measured along face normal.