Use pen blanks which are slightly longer than the tubes.
Drill the pen blank in a pedestal drill or by gripping in a four jaw plate in a lathe (utilising a drill chuck in the tailstock). Use the special COLT Pen Blank Drills. Glue the tube into the wood with cyanoacrylateglue (Starbond EM150 or Chestnut CHE3103) (photo 1). Insert the tube quickly with a twisting motion to spread the glue. Tap the wood on a table to bring the tube level with one end, and cut the other end to bring the brass tube level with the wood. Make sure the ends are square. Remove possible glue residues with pen blank trimming tool PBT1(photo 6). Pens can be made by using a pen mandrel (PM). It gives you a quick indication (without the need of using vernier callipers) of the recommended barrel diameter. (photo 2).
Pens can also be turned between centres (photo 3), this is particularly suitable when a stepped tube is required. Use vernier callipers to check the diameters at both ends of the pen barrel.
When polishing, do not generate excessive heat as this will split the wood and/or crack the glue joint. (photo 4).
- Assemble. This can be easily done by means of the pen assembly kit TRPA (photo 5).