honestly, i had never looked at the name before, Victor, and there are a few pics on the internet
never would have imagined it might be a thing (now, that was a confusing and useless sentence)
as a gesture, i'll ask you instead of googling it - are these concave cutters? they're what i've been using, and i honestly have no idea how i came by them
my first bioart toolbox was a fishkit i used decades back when i had a little aquarium maintenance business named The Tao of Fish. the logo was a yinyang morphed into fish with the caption "We Know the Minds of Happy Fish". i don't recall ever explaining that to anyone, nor have i thought of it for two decades, but it was, IMHO, funny:
Zhuangzi and Huizi were strolling along the dam of the Hao Waterfall when Zhuangzi said, "See how the minnows come out and dart around where they please! That's what fish really enjoy!"
Huizi said, "You're not a fish — how do you know what fish enjoy?"
Zhuangzi said, "You're not me, so how do you know I don't know what fish enjoy?"
Huizi said, "I'm not you, so I certainly don't know what you know. On the other hand, you're certainly not a fish — so that still proves you don't know what fish enjoy!"
Zhuangzi said, "Let's go back to your original question, please. You asked me how I know what fish enjoy — so you already knew I knew it when you asked the question. I know it by standing here beside the Hao."