<https://www.fountainpennetwork.com/forum/topic/232530-kaigelu-316-accidental-disassembly-photos/#comment-3355794>
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"I have not, and will not, produce a replacement cap finial. The load on the thread from the clip is too high for a thread to stand in polyester resin. Polyester is too brittle &amp; not strong enough to remain intact for long.   I cannot, at present, find a way of moulding it in a stronger resin so that the angled faces are ready polished when it comes out of the mould. I will look at it, but hold no great hopes.   Regards,   Richard. "
<https://www.fountainpennetwork.com/forum/topic/232530-kaigelu-316-accidental-disassembly-photos/?tab=comments#comment-2522445>