Hi,
I am working with this part and suddenly, the boss-revolve disapears, the sketch1 is now dubbed sketch1->?.
So, I deleted the boss-revolve, and re-created another one, with the sketch, unchanged.
But what means this adding of ->?, why the boss-revolve suddenly disppeared ?
The story don't end here : I want to make a sweep-cut, with sketch2 as profile, the Helix as path : I can't get the sweep option, in the list of cut features.
Do you see the problem, here, too ?
Tx for your help.
I have no idea why the feature disappeared. It may have been a SW glitch or (more likely) something you did, or didn't do.
http://help.solidworks.com/2012/English/solidworks/sldworks/c_featuremanager_design_tree_conventions.htm
Delete the DefinedInContext > Coincident4->? relation in Sketch1->? and you may be happy again ... for a few seconds.
The Swept Cut tool is greyed out because you have hidden the solid body from which the cut is to made. Show the sold body and the tool becomes available.
FYI, it is usually good practice to fully define sketches, and it is always good practice in a Swept feature to use a Pierce constraint between the Path and Profile.