Duo 7

September 27, 2014

I have been studying the pieces of a DUO 7 that has been in my 'to do' box or a long time. It has a damaged nib and is missing the section ring.

A very kind FPN member sent me a couple of 65mm long glass cartridges but having now measured the parts these do not fit this pen.

So my Q is, What cartridges do ?

I will probably not complete this task because the nib is beyond economical repair.

Also looking at some old adverts it appears this pen was sold on the basis it would not leak if taken skyward...how true was this.

Did anyone else realise the nib is reversible. Medium when used the normal way, fine when used on the reverse.

Edited September 27, 2014 by Force

September 27, 2014

Those ones normally take the numbered "22" glass cartridge (not the longest ones, not the shortest either ...)... or do you have the long DUO 7 model ?

(mine, that use the #22 cartridges, is 13,5 cm long, capped).

But putting those cartridges in the pen without the seal can be difficult.

If you want to restore the seal, you will have to use a #19 sac, and cut it to use only the bottom of it. It's not difficult to do, but the hardest point is to put the feeder in place properly (by the rear of the section) while the nib must go by the front (may be it's how it has been damaged ...).

For more informations, check this page : http://www.richardspens.com/?page=ref/repair/glasscart.htm

September 27, 2014

Hi Xof, thanks.

Yes I followed RB's instructions to the 'T' and ended up thus,

Just this morning I was sorting through some unfinished business and decided to try it in the barrel. Don't know why I did not do this way back when I repaired the seal. Perhaps I was trying to sort the nib at that time.

As I say at the moment I will not throw more funds at this pen because of the nib damage. The cost to repair it runs to about £50 (more than twice the pen value). Maybe wait to see what pops up on ebay for a nib replacement.