I don't have a pic, you'd be better off searching through a bunch of Skips old threads. What I'm saying is that a bolt is already threaded. A nib on a pen like a jr gent has threads on it for a cap. So the bolt threads would be the threads for the cap to screw on to the pen. The body of the pen can be tapped so that the threads of the bolt not only will allow the cap to screw on, but you can screw the bolt into the pen as well..so half the threads are in the pen body and the other half stick out to be used for the cap to attach too. So, lets say the go 1/2" into the pen, then they stick out the end of the pen 2". You leave a few threads close to the pen body and the rest of the threads you file down to become a rollerball nib. I do believe all or most of Steves pens used to be made similar to this, using the existing bolt threads. Now maybe you don't have a tap for that bolt so that you can tap your cap or tap your pen section? You can take anothe bolt the same as the first one and make it into a tap with a grinder. Simply secure the bolt and grind 4 channels across the threads. Chuck the bolt and file the end down so it tapers and now you have a tap. Another alternative to a bolt, is plumbing fittings. Those are brass, which is real easy to turn with a chisel. I have been using some plumbing fittings on the ends of my pens to cap them, so you unscrew the fitting and change out the refill.
:biggrin:
