The winds have blown down this years pine cones, they are about 4" long x 1 1/2 dia. They have not opened yet and feel tight. Can I use something like this to make a pen? Thanks in advance.
I don't see why not. What I would do with something like trhat is cut them down to the size you need on a bandsaw...drill out your hole for the tube then saturate that baby with thin CA. If you don't do that then I would put them in a mold and pour in some kind of resin and put it under pressure until it sets up.