DIY cleaning patches

[smoothshooter]

I'm thinking of just getting some cloth from the fabric store and making my own cleaning patches.

Have you guys done this?
Do the patches have to be round, or can Just cut squares?
Can I use muslim cloth instead of t-shirt cloth?
What size for .50 cal and 12 gauge?

Old white tee shirt material is the best. MUST be 100% cotton.
I cut mine in random shapes; square, triangle, rectangular, trapezoid, whatever.
Shape is not critical.
I wet a patch and wrap it around an undersized copper brush and run it down the barrel. Give it a couple of twists when the cloth/brush bottoms out against the breech plug. Use in conjunction with a breech plug scraper that is contoured to match the face of your breech plug. Some are flat and some are dished out. One of the reasons I despise patent breeches is that you cannot clean them this way.