play around with the PSI hide a knife keychain, and maybe half of a teachers pen kit and if you could get a clip to fit the blade end of the key chain kit you could have quite the pen design. You would have to use 2 tube sizes and mate the the 7mm tube into the knife kit, but you could design it to look kind of like a longwood pen.
The only trick is to get a properly drilled upper blank. I think you would have to do this on the lathe and after you have rounded off the upper blank into a round shape. As for the clip, that is going to just take a little time to see it you can find one that is big enough for the knife kit.
I would love to see one if you make it. [
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Hmmm.. this could start a new fad, perfume "pens" Storage pens, tootkpick pens, "take a pill pens" [
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