A mate produced whats become known as worthless wood blanks for these pencils, scrap off cuts I gave him of burls set in acrylic.
The Fountain Pen & Roller Ball pens a variety of Acrylics and some timbers the latter being Spalted Mango, Bull Oak with laminated Cedar strip in centre, New Guinea Rosewood, Camphor Laurel cross cut, English Oak with Wenge.
I did these pen kits all up as the kits are no longer available from suppliers and neither are spare parts.

. The 6 facet grip has been replaced with a 12 facet type and in a different style kit altogether.