Esterbrook ballpoint fans (FJ and Wordathon) have now purchased 100 of the adapters that allow use of a modern D-1 refill in these pens. If you have one of these ballpoints and want it to write well and the click-action to work properly, then you need to visit my Shapeways store.
The URL is https://www.shapeway...m/shops/bamapen
I've also recently tried the adapter in the Deluxe ballpoint, which uses the same refill as the FJ/Wordathon, and it works fine there, too.
By the way, my favorite D-1 (mini) refill by far is the Uni Jetstream SXR-200-07 or SXR-200-05 and you can find these for sale at Jet Pens or on eBay.
Edited by BamaPen, 10 March 2018 - 20:06.