I haven't noticed any issue around the edges of the cut patches, but that's interesting. I'll keep my eyes open for that one.

Thanks for the link to the smaller patches. I just checked, mine were 1 inch or 25mm. Didn't realize they came smaller than 1 inch.

Elmer's rubber cement works fine, thousands of miles on the road says so.

I patch because I ride through a crappy area with crappy roads and unavoidable garbage/glass on the road. I can go months between flats, and I have had one or two flats per ride for 5-10 straight rides. I also ride every weekday, twice. With long valve tubes (80mm) costing $8-$10+, I'll patch thank you. At one point this summer I looked at the flat tubes hanging in the garage and there were 10+ tubes. Frugal or not, that's a lot of money...

I leave patched tubes to cure for 24 hours, then fill them with air. I come back 24 hours later to check. If they are full, they go back in the rotation. If they are flat, I look for a second hole or where I messed up the repair. If they are questionable, they go under the faucet to look for leaks.

I don't use or recommend the glue less patches. While they may be good in a pinch, they NEVER seem to last. It's a temporary solution and I prefer t do it only once and correctly the first time.

As for the uses for old tubes, excellent suggestions. I've used most of those, and they work great. Another use is to tie the wheel to keep it from spinning when it's on the bike rack. They work as well if not better than bungee cords, and are obviously cheaper. You also won't be pissed when you lose them.

Excellent responses, thanks guys.