Hi,
i ve just read this thread and very interesting it is too. Nice pen and concept.
Re Schmidt nibs and sections and everything else Schmidt, Ian Jeffrey, a nice bloke who runs Studio pens and Schmidt pen refils is the sole UK distributor for Schmidt and i know he is presently cataloging lots and lots of components. He might even be going to start to sell the taps as well, but i'm not sure about that.
If there was enough interest on here i could with Jim's permission, approach him for a possible forum discount on Scmidt stuff. I'm thinking ahead but if he agreed he might put a £150 minimum order like the wholesale sales but we would have to see.
The thread size for the smaller 5mm Schmidt feeds is 6.5 x 0.5mm, i don't use them much as i think and so do people much more knowledgeable than me think that German Jowo are better, and also better than Bock. I do sell Jowo nibs and units though to be fair. Jowo 5mm feed units are the same thread size as Schmidt. Schmidt don't manufacture i am told their own nibs etc they are just a distributor.
having said that i think Schmidt refils and piston fillers are very good, as are some of their other stuff.
I agree with whats been said about triple start threads, triple start taps and dies are serious money and alignment is a problem on any blank with a pattern or grain etc. Normal ones even non standard aren't though, well they are here but not in the USA for now anyway.
Tracy tools i have used and are very good and cheap and for custom taps although more expensive they would bring the price right down if 6 or 12 or more were ordered specially. Tapco in America are even cheaper and i think even after import duties etc.
If anyone is interested good sources for parts are all USA based i'm afraid, but good stocks though:
indy pen dance
Mr Greenwald as mentioned
Silver pen parts expensive but seems like very good components.
Golden nib
Richard Binder real oracle from a Fountain pen expert and a very good site especially the reference pages.
Regards
Pete