A while back I bought a boxful of mixed blanks from somebody who'd been experimenting with casting his own resins. It's the first time I put some of it onto the lathe, and I found it turned quite easily provided I used a light touch. This blank has gold ripples running through it, they're a bit subtle and don't show too well in the photos.
The section takes an Esterbrook Renew-point nib; because there's no feed tube sticking out the back of the nib units, I built one into the section using stainless steel tubing. I'd measured a Bock nib unit and 0.1" outer diameter is almost an exact match, and it's a nice snug fit when I push a cartridge/converter into place.