The Oscillo 88

"I cannot work out what is happening. Like they're just pouring the ink randomly into the thing and then pushing down the grip section," he says. "What does that? I don't get it. I can't get my hand." The pen has a piston rod in the barrel to shut off the ink flow to the feed, but not like a piston filler or filling system per se. It's more of a shut-off mechanism than anything else.