Most of the pens I've made so far are from PSI or Lee Valley (and the LV as far as I know are Berea). The Berea tend to have very tight fits putting the parts together - a few times putting the transmission in, I'm pressing so hard, that it suddenly gives and goes in too far also I'm concerned that I'll damage the tip when I'm putting it in, even though my pen press had nylon on it. Once assembled, it seems they will never come apart - if I make a mistake and need to correct.
The PSI on the other hand seem a little too loose. The good side is that I was able to repair one I assembled in the wrong way. But I'm afraid that the use could too easily push parts out of alignment.
The PSI on the other hand seem a little too loose. The good side is that I was able to repair one I assembled in the wrong way. But I'm afraid that the use could too easily push parts out of alignment.