…that i can use for a few small projects in sheet metal. i’m learning to tig weld, and need something that is better than the back of an envelope…

DraftSight from Solidworks? The 3D version is big money, but the 2D version is free!

As garethc says for 2D, or for 3D look at DesignSpark Mechanic:

DesignSpark

Draftsight is great. Like a mini autocad. The free one will do a little 3D as well. Worth learning because the skills are transferable. Good for setting up files for laser cutting if that is useful.

I’ve half a memory that there’s a ‘lite’ version of Autocad which is free? You lose the 3D and rendering, unless I dreamt that?

Ah, Autocad LT is what I was thinking of. Seems it’s not free though.

http://www.autodesk.co.uk/products/autocad-lt/overview

Google sketch up is not bad

thanks chaps, lots of help as usual, 🙂

Used DraftSight recently to do some drawings for some metal plates I wanted made to modify a trailer. Downloaded, learnt and drawn in about 20 mins!

ProdgeCAD is very like AutoCAD if you can get the free one, try here http://download.cnet.com/progeCAD-Smart-free-DWG-CAD/3000-6677_4-10777481.html
Otherwise Sketchup worth a go.

I also use Draftsight as it is just like AutoCAD but importantly works well with a Mac.

Solid Edge also do a free 2D package, it is very easy to use.

You have to register here though