“The chalk? I always use that chalk, it’s never been a problem.”
“Ah - yes. This stuff will work just fine for most circles, but, uh - here, take a look with my loupe. You see the off-color flecks? Can’t hardly see them with the naked eye, but those are impurities. Silicates, might even be some iron in here, to be honest. Usually won’t cause a problem, but - you said you hadn’t tried this particular summons before?”
“First time trying a 5th level, yeah.”
“Those silicates will make your scribing a little fuzzy when viewed from the astral plane. You see, for example, these three fine lines here? With this chalk, on the astral that looks like one thick line with fuzzy edges. They can’t tell exactly what you want, and they’re picky lil’ critters so they just won’t do anything in response.”
“Really? Oh. I always thought the expensive chalk was just fancy to be fancy.”
“Making pure chalk is difficult, you need a dedicated production line or dust gets in the finished product. To be honest, you don’t need to bother with it for most things, but 5th and up, 5th level and up, it actually is necessary. Anything with lines within about two millimeters of each other.”
“So I need to start over?”
“Unfortunately yes. You’ll have to erase all this, but with some good chalk it should work just fine. Next new moon your summons should go off without a hitch.”
“Dang. At least it’s not my sigils, I was worried it was my sigils.”
“Nah Your sigils look good. Even and balanced. You know what you’re doing, it’s just an equipment problem.”
“Thanks for the help, sorry to make you come all the way out here.”
“No problem! It’s my job.”
