Can not extrude

[CalmWind]

Hi, I am trying to create a sheet metal part between two c beams in an .iam file, but it will not let me extrude the surface. (the lines are projected from the edges of the C beam, and i used breakline feaure to convert construction line to sketch line.)  I don't know what else I am missing.

Can anyone help.  Thanks.

[johnsonshiue]

Hi George,

You will need to include all the ipt files. Or, just post the sheet metal part ipt file here. Did you try creating the Extrusion at assembly level or in a part? If it is at assembly level, it will be like a machining process cutting away material from the parts.

Many thanks!

[CalmWind]

Thank you Johnson for the fast reply.  Here is my .ipt file.

I used extrusion on assembly level I think.  What I did was place the C beams in assembly and then create a sketch plane between the c beams, then project the lines from the c beams.

[Frank-Oosterwaal · Accepted solution]

Hi,

You created a sketch at assembly level. Like Johnson said those sketches are to cut away material, not to create. If you want to create a sheet metal plate you have to create a new part inside the assembly. Look at the screencast, hope it's clear. Good luck!