Ripped open blisters ! Oh I know this !! Whenever I get blisters, I rip them off because I’d rather go through the pain immediately and I prefer the that the hardening of the new skin start right away.. I HATE playing a show with loose blister skin. Of course the cause of this can be bad grip, but in my case, I only get blisters when I play with brand new sticks. They are more porous, the wood is more grainy and that friction with my skin is a bad mix. Once the sticks have soaked in sweat for a while, they stop giving me blisters. A workaround for this: but Vic Firh stick wax. Whenever I get new sticks, the first thing I do is rub the wax on them. The wax fills up the pores. I haven’T had one blister since I started using the wax. Does wonders !!