Does anyone know a company that could make me small quantities of a double walled tube? The first (inner) tube to be 1.5-2mm wall, clear resin with a single layer of 80gsm woven glass fibre (preferably as close to the inside of tube as possible), the outer tube to be “normal” carbon fibre with standard 1.5mm wall and the outer diameter to be 25mm.

Odd request I know...but then I did say I was the mad scientist...

I already tried a frosted (works well as a key) acrylic tube, but I’d prefer at least some sort of fibre reinforcement in it for rigidity...and then I need that to have sufficient covering of resin that cutting the design into the CF doesn’t risk also cutting the reinforcement in the “inner” tube.

Might have to think of a different way of doing this...