Easy & Cheap Refill Tool

[mcl5000]

 

[bluesuede]

I use a dental pick too. Simply because I had one. Removes both pieces together.

 

[rp_iowa]

I use a very small "alan wrench" - it is small enough to fit into the mouth-piece hole but strong enough to pry those stubborn ones off without bending.

 

[arkangel]

I'm using a tiny allen wrench too...started with the OP's seam-ripper when I first started refilling, but the one I had was so cheap, it bent so many times while working around in a circle to carefully pry the cap off, the sharp end eventually just busted off

 

[RKephart]

I made my own out of a cheap harbor freight Allen driver, I just bent the tip so it will curve a press the white cap at the edge from the inside.