I tried it with water, per instructions I found, and could not get the black “cap” to screw back on the clear bottle. I must have tried 100 times. My spouse also tried to no avail. I had no choice but to return it. My only enjoyment of the filler was about 5 seconds of seeing it work well with water. Customer service in response has been good. I returned it. Disappointing.
I have purchased 3 of these Pineider Pen Fillers from Truphae and love 2 of them. They have become my go-to method for refilling piston fountain pens because they make it easy to get a full fill. As for the third? The threads on the cap and bottle are somewhat misaligned making it difficult to screw on the cap without cross-threading. Getting the threads to squarely engage can be difficult, but once the cap is finally squarely on the bottle, it seals and works well.
I have used my new fillers and can say that they are fabulous!! Thank you Truphae for the great service as well! I will definitely shop with you again.
-Very easy to use once you get the hang of it. Test the Pineider Pen Filler with water first before trying with ink to prevent any messes during the learning curve.
-This pen filler latches on to piston and vacuum pens very well. With converter-style pens, the pens will need to have a long enough grip section so the pen filler can latch on correctly to prevent any leaks during filling. For instance, the Luoshi Cigar pen is not compatible because the grip section is too short.
-Easy to clean: just rinse under water and let dry.
~Shout-out to the Truphae Team, thank you for making any issues right!~
Works great so far, seems like it will last a while but only time will tell.