I'm reluctant to post this among such distinguished practitioners and elegant pens, but this 5in WASP twist fil was new to me; perhaps it will be of some interest to those who are interested in such other-tier pens. When the pen arrived from ebay to add to my accumulation of WASPS (not to be confused with Dr I's hoard), I was first curious about the end cap, but after disassembling the pen, I realized that what was labelled a vacuum-fil was a twist filler.
Replacing the sac required cutting a size 20 to length and attaching it to the transparent end cap.
To stretch the sac far enough to fit the section, I used a forceps clamp
And the impressed dots on both barrel and section (highlighted with chalk) needed to line up.
Happily it all worked, the pen drinks ink, and writes with a slightly flexible medium line.
I have no idea how uncommon a WASP Screamer twist Vacuum-fil is, but I'm delighted it now has an appreciative home.
Jack
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