What do you mean by 'tip'?
Fountain pens have 'nibs' that are held in 'nib-holder's. Together, the nib-holder and nib are referred to as the 'section'.
Thanks for getting back. I made a pen for a guy that contacted me last week and said he couldn't get it to write. I have not seen it yet and was trying to get a little information before I meet him. I don't know if it is a nib problem or what. I was actually wondering if the nib "section" on a Kojent is unique to Woodcraft or if these sections were interchangeable with other styles. As I say I have not yet seen the pen or what he is attempting to use (pump or cartridge). The information that you have provided is very helpful and I now know that replacement nibs/sections are available if that indeed is the issue.
Thanks again