I too am looking to purchase some kydex. Don't need to buy in bulk at this point, but want to try my hand at making my own holsters for guns, knives, and lights. Where is the best place to purchase?
For small-scale DIY projects, KnifeKits.com can't be beat. If you ever start producing a quantity of holsters, or want to split the cost with buddies, you can save some money buy buying in 48x96 sheets.
For OWB concealment holsters, I typically use 0.080
For heavy duty rigs or dedicated OC holsters, I prefer 0.093
Knifekits is a fun and inexpensive way to try out different colors and thicknesses to see what suits you best.
I would recommend that you not use 0.060 for an OWB holster. It would probably hold up for awhile, but it is much more prone to cracking than the thicker material.