
— Use Platinum proprietary cartridges, either new or by refilling them.
— Use an adapter to use short international cartridges or short converters (squeezer type).
— Adapt the current Platinum piston converter to fit inside the pocket pen, as was already described on these chronicles.
— Finally, find an old Platinum converter.
The following table summarizes the cost of these options:

The old converter is hard to find, expensive and poorly made. But it holds more ink that the current converter, especially when the later is modified to fit in a pocket pen.
My choice is pretty straightforward—I refill cartridges with a syringe.
3 comments:
Thanks for the post and the comparison.
Why would the modified converter have less ink capacity than the "normal" one?
The modified converter idea is interesting. Never thought of it.
Personally I have kind of given up on converters after realizing that sometimes they are too expensive in relation to a cheap fountain pen. So I'd rather use cartridges that I can easily refill with a syringe. Not to mention that the whole process is a lot less messier than sticking the nib in the ink bottle.
Because the limited room inside the pocket pen barrel does not allow for the piston to move all the way up. Please check this chronicle for some pictures on the matter: http://estilofilos.blogspot.com/2010/06/diy.html
Thanks for commenting.
BT
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