Ultem piston filler

[Kiko_arijit]

Showing a piston filler pen I made a few months ago. The pen is a piston filler, quad start threads, has a Jowo nib, holds around 1.9 ml ink, made from Ultem, polished to a clear glass finish. Not at all good at product photography, need to get good at it.

 

[its_virgil]

made from Ultem, polished to a clear glass finish.

Very nice. Excellent design and execution. I envy your clear polished finish. I've tried but without totally succeeding. Thanks for sharing aside can see the glass like polish is possible.
Do a good turn daily!
Don

 

[Jim15]

Great work.

 

[Kiko_arijit]

Very nice. Excellent design and execution. I envy your clear polished finish. I've tried but without totally succeeding. Thanks for sharing aside can see the glass like polish is possible.
Do a good turn daily!
Don

Thanks Don. What polish technique have you been using?

 

[its_virgil]

I have been using the sanding technique shown by Brian Gray at Edison Pen Co. I don't have a metal lathe so using a boring bar to smooth the drill marks. I sand with auto wet and dry, micromesh, Zona paper and try to polish with Magic Juice. Removing the drill tool marks seem to be the secret.

 

[Herman]

Very good, it really looks very pretty. Ultem is a material that is somewhat difficult to polish, very laborious...

 

[Kiko_arijit]

I have been using the sanding technique shown by Brian Gray at Edison Pen Co. I don't have a metal lathe so using a boring bar to smooth the drill marks. I sand with auto wet and dry, micromesh, Zona paper and try to polish with Magic Juice. Removing the drill tool marks seem to be the secret.

Unlike acrylic, ultem isnt very forgiving when you melt it from the inside. if you do, it will take a hell lot time to get them out. Using a split point sharp drill helps extremely well, a continuous flow of water based coolant which I provide using a small 12v pump, keeps everything cool. I keep speeds down and peck very often.