Eugene; When I want to take a 27/64 tube lazer design and convert it to some other pen kit, I double tube it. Take the 3/8 pen tube from your kit of choise and wrap 1/4" masking tape on it the long way overilaping each joint. Slide your 27/64 yube over the masking tape and center your design on the 3/8 tube. Mark your masking tape and slide the design back and apply glue to your tube. Recenter your design. Now you will notice that your 3/8 tube sticks out of both ends of your design. Select some type of a filler to make up this space. For your pen I would use pic guard in red, white, and blue. Whatever you use, drill out the hole to 3/8 and slip and glue over the ends of your 3/8 tube up to your laser blank. Using this method allows you to turn down your pen ends to match the smaller 3/8 fittings. This makes a very solid pen in any length you want your 3/8 tube to be. I have converted hundreds of pens using this method, and have never had one come loose. Look in my photos and you will see this design converted into a Vertex maganitic pen in gold. For the bolt action, just insert the taped 3/8 tube into the 27/64 tube. Be careful when you turn down the ends of your pen, because you won't have much wood there. Jim S
