The pattern called for 7-8 oz veg tan. I bought the thickest I could find at Hobby Lobby called tooling leather; I'm guessing 3/16ths (4.5mm?) inch thick..maybe 12-14 oz? Much thicker than what Tony (Diesel Punk) used in the YouTube video. I thought a tool bag needed to be thick and tough and at this point had not been to a real leathercraft shop where other options are available. I used a 1, 2, 4, and 6 hole punch for the holes. It took probably five hits on average to get the 6 hole punch through. I'd say I'm above average in hammering strength. I wore noise canceling headphones throughout or I might have had hearing damage. 1.5 mm holes and 1mm white waxed thread off Amazon. The edge are painted with brown ArtMinds edge paint. I bought a little roller tool off Amazon and it got a little sloppy...the roller head keeps falling off. I used a fine beveler.
I was hoping for better results overall. Most of the edges are not even and my stitch lines are not straight in several areas. The leather didn't bend as nicely as I hoped where the side and the front/bottom/back come together. Cleaning up the leather from my dirty hands caused some creases/wrinkling on the surface. The handle is the worst for part for bringing two edges together. The leather edges were pulled inward instead of making a nice square edge. The stitches were too close to the edge to sand and make it even...I would have sanded the thread.
I didn't have an awl to start, but bought one and found it really helped with lining up the holes for stitching. I broke probably 10 needles. They kept snapping at the eye. Eventually I started using needle nose pliers to pull the needles through as my hands ached from the work. If I followed instructions of 7-8 oz, stitching probably would have been easier and the edges might have matched up better.
I ordered some hardware from Amazon, but my wife said it was cheap stuff and encouraged me to return it. I went to Tandy Leather Shop in Livonia MI and found the clasps I used. I'm happy with the quality of the clasps from Tandy. I had to make some modifications to use this hardware. The rivet above the swing clasp was a hole for the original Diesel Punk plan. I just put that in to fill the hole...I don't think anyone would think it's to cover up a change in plans mid project.
I'm going to clean the bag a little more than apply some Filson's Original Oil/Finish/Wax to protect it from staining. I'll test the product on some scraps before I apply it to the bag. I'm currently using the tool bag to hold my leather tool. I'm also planning to add magnetic clasp/buttons to the inside pockets to old them closed...I haven't looked into my options for this yet though.