Have any of you ever heard of a pipe stem made of a material called Juma? I just commissioned my second pipe from Jesse Jones, a Bent Dublin with a 1/2 to 3/4 bend. Jesse said that, on occasion, over many years, the stem on a bent pipe will straighten out some if it is made of Cumberland. He said he wanted to use a material that is softer than acrylic but harder than Ebonite. "Sounds good!" said I. So I looked this stuff up. It is used in billiard cues as inlays and ferrules or handle material. not sure what other uses it has, but I've never seen a Juma pipe stem. Can't wait to try it! IMO Jesse makes the best pipes around and in perfect "classical" shapes. Here are a couple of links I found, if anyone is the least bit interested.
http://www.cuestik.com/store/product.asp?DEPARTMENT_ID=322&ITEM_ID=6226
https://www.elforyn.de/en/juma/snake-dragon/ivory-snake/1648/juma-square-rods
http://www.cuestik.com/store/product.asp?DEPARTMENT_ID=322&ITEM_ID=6226
https://www.elforyn.de/en/juma/snake-dragon/ivory-snake/1648/juma-square-rods