Is it just me or is this stuff incredibly strong?
I did my first test dose, measured out 4mg on my +/-3mg accuracy scale. Cut it into a line, cut it in half, made that into a line, cut it in half again to render aprox 1mg. I almost dosed that, but decided to play it safe since I just wanted to test the waters for safety, and cut it in half again. So in theory I dosed about 500ug, but factoring in a wide error margin, maybe 1mg max. Erowid lists threshold at 2-5mg, but this was definitely well past threshold for me. For about an hour, I was glad I didn't have to be in public or talk to anyone.
Has anyone else here taken this tiny of a dose and felt strong threshold effects? I'm trying to figure out if I'm extra sensitive to this stuff or what. It's hard to imagine doing 10mg of this, let alone the 20mg or more that you read about, especially with the exponential dosage curve. I liked it and look forward to more, but I'd like to not make any mistakes in how much more.
It is true about the dose/response curve.
BUt 2CE is (next to fierce), also a weird chemical

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First the obvious things:
Does your scale run on batteries ? Might be low and then the amount displayed could be way off.
You could be more than averagely sensitive.
I always weigh my stuff at least twice. I weigh the dose (more than not I weigh double I need, and cut it in half (with a sharp knife, not a credit card or sth.) These compounds have weird density sometimes, IMO.
After I have my wanted dose, I weigh the paper I put it in seperately. Then I take the paper and put in the dose, and weigh the two together again. Rarely is this amount equal to "paper + dose". I don't know what scale you are using but mine costs 130€ and runs on AC, but there is still a definite error.
My first dose was 15mg, if I remember correctly. (after a miniscule allergy test). Good trip, pretty intense although not too much.
Highest I've gone is 25mg. Was wonderful. I was in the moment for 4hours. Being in the moment included squirming in bed, as I said. I started watching a documentary (Wonders of the Universe) but I couldn't make sense of it after 45minutes. Went lying on bed with Supperclub music.
I don't remember the allergy testing being active like you describe , but:
I have tried 3mg of 2CE at a social gathering at a friends house and it was way more active than I thought.
So active that I went by bike, ant not by car

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I also took 8mg with a friend once (my other trips were all solo), and he likened it to 15-20mg of a 4HO-x compound.
We went for a bike ride and suddenly all I could see were phosphenes and light flickers. Cool but weird ! Luckily we were accompanied by a sober person
Thread carefully but I find it a real "teacher compound". As Shulgin wrote:
Several people have said, about 2C-E, "I don't think I like it, since it isn't that much fun. But I intend to explore it again." There is something here that will reward the experimenter. Someday, the full character of 2C-E will be understood, but for the moment, let it rest as being a difficult and worth-while material.