It seemed to not last night either after about an hour. I think it's a matter of me holding back sometimes more than I expect or something. Either way on the 2nd trip I accidentally broke it while trying to take it off lol. I didn't even realize I was being that rough with it. It was low anyway and as long as I keep it attached I can get a few more trips out of it at least. My friend is making a new one for me tomorrow when I go to his place.
It does seem like it's taken more though the last few trips. Last nights was different because I was already on mushrooms. I noticed with the first few, open eye visuals weren't that prominent but the closed eye were insane. Last few it's been the opposite, the open eye visuals have been intense. My hand, although already gigantic became 10 times its normal size and looked so... wrong. That's when I went in for even more and realized I wasn't getting any further. During my 2nd trip I'd actually spaced out 3 5 second hits by about 1m30s. I'd only taken one to see if it'd rid of a bit of headache I had left, then I took another and realized I was tripping, and then another and was functionally tripping with visuals as if I'd eaten an 8th of shrooms.
I think for this pen it may've been the opposite, that it was more potent before it was burned down. But again I really don't know, when I did it every day for a month last summer, some nights it wasn't much, some nights it was a lot, or I wouldn't remember half of it, or I'd entirely black out. I seemed to do the same amount each time. Battery life of the pen does seem to matter to an extent though. I found a no press pen while digging around last night to use for my dab carts in the meantime and it's so smooth, I took massive clouds that I hardly even felt compared to the pressable one. Curious to see how it will be with DMT.