I have not tried this recently but, if the cylinder is created with as weldment member I thought you should be able to use the standard trim procedure.
Failing that, in the past I have offset a surface 0" and used cut with surface to produce the trim. I then delete the surface as a feature tree part.
trim to weldment works if the weldment being trimmed is smaller than the surface used to make the trim. I was able to trim with surface after extending my cutting surface to be larger than the object to be trimmed. Thank you for the info.
btw. do you know if in SW 2008 you can trim weldments from different parts in an assembly?
Failing that, in the past I have offset a surface 0" and used cut with surface to produce the trim. I then delete the surface as a feature tree part.