On Fri, 10 Feb 2012 12:46:37 +1100, John G
wrote:

Does any one know of an online source of ouline drawings of common
metal parts in a form like clip art to allow bits to be pasted in
drawings?

Outline drawings, no. But a large number of components manufacturers
have CAD drawings of their parts -- bearings, fasteners, motors, etc.
-- in various CAD formats.

You can scale the CAD (often DXF) drawings, use a freeware program to
convert them to a raster format (TIFF, JPEG, etc.) and paste them into
your drawings that way, if you want.

If you're drawing in CAD, you're all set.

Here's one to look at:

http://www.solidcomponents.com/

I don't know anything about them, but it should give you the idea.

--
Ed Huntress