like in this tutorial .http://www.youtube.com/watch?v=hJs4k-30rew
it seems to be hit and miss and never works ,the stages seem pretty simple but i can never get it to extrude as shown .
draw cirle
project onto outside face
convert entities
draw line to give direction of extrude
extrude in direction of line
but it just wont extrude as shown ,i get an error message
SolidworksSketching