Problem - Can anone help

I have a problem, and i would appreciate some help. Here is the
situation.

1. I have to model a 150x25 channel rolled to 2000id, toes out. The way
i did this was to insert the appropriate sketch from the structural
steel toolbox and then, with the help of a centre line, used the
revolve boss command to complete.

2. Now i have put holes to put on the inside face. I cannot think of an
easy way of doing this. Maybe I have drawn the channel wrong in the
first instance. I would prefer to be able to flatten the channel, but
using the revolved boss command has made this impossible.

Any help would be much appreciated!

 

The Wrap feature comes to mind.

 

Wrap has the advantage of providing dimensions from the sketch in the
drawing.

 

2 other possibilities-
A)draw a revolved hole somewhere using a new radial plane and use the
circular pattern tool and your axis of rotation to generate your other
holes- suppress any unwanted instances
B)use the hole wizard to pick 3d points on the surface

 

possibility 3
make a flat web and insert a bend, flatten bend ,cut in your holes,
rebend and revolve or sweep some flanges onto it, add fillets. this
will allow you to produce a flattened view of the flange back with
holes shown in a dwg

 

actually I take back no.3 because interestingly if you flatten the part
after adding the flanges the sheetmetal has been trimmed by them....hmmm...I
thought this used to work this way....oh well

 

haha!! ...it does work after all...suppress the flange features when you
make the dwg flat pattern....enough posts all ready - gotta get away from
this pc for a while..perils of being self employed.

 

Well, I didn't think of it either till he asked and I did some testing.
I've been trying to find a way to get holes on curved surfaces that I
can dimension on a print. Finding the answer to his question helped a
bit in that direction.

 

Thanks everyone!!!!