I just ran across a source for a huge variety of Carbon Fiber tubing in Metric sizes.... Here is an index to what is available (scroll down)….https://www.ebay.com/itm/Glossy-20mm-OD-14mm-ID-1000mm-Length-3K-Roll-Carbon-Fiber-Tube-20-14-1000/283042432313?hash=item41e6a4c539:g:VVUAAOSwfgBdIxF7Click on the size you want, you can buy singles or multiple quantities.... and the shipping is very cheap.... They appear to be in inventory in California....Bob
Carbon Fiber Material: Modulus, Strength | Benefits, Features & Notes•Standard Modulus | 34 msi, 700 ksi | Good structural properties - Stiffer than aluminum - Readily available•Intermediate Modulus | 42 msi, 825 ksi | Great structural properties - Highest strength option - Great balance of stiffness and strength•High Modulus | 57 msi, 670 ksi | Very stiff - Good thermal conductivity / stability - Typically used in all 0° & 90° (or off-axis) plies throughout the ply sequence / laminate orientation.•Ultra High Modulus | 94 msi, 414 ksi | Stiffest option available - Great thermal conductivity - Used primarily as 0° plies in combination with lower modulus / higher strength fibers in the 90° orientation to create a well-balanced and functional composite structure.
Grey hat White shirt ... or, Grey hat Grey shirt ?