Sylvanite
Member
I wanted to make a modified pen that didn't look like a modified pen, so I set out to adapt a euro pen kit to take a parker-style refill. First off, I drilled out the nosecone with a #38 bit. Then I pulled the plug from the end of the refill, turned it down, and threaded it with a M5 x 0.8mm die. That way, it will screw into a standard 7mm transmission:
Normally, I avoid modifying refills, but since a customer can pull the plug out and stick in into a replacement refill, I think it's ok this time.
When attached this way, the transmission will need to be installed in reverse orientation, which necessitates a couple other design changes as well. Standard euro tubes won't grip the tube in this placement, so I cut new ones from some 7mm tube stock. This photo shows all the parts, with the refill screwed into the transmission. The transmission will press into the short upper tube.
I didn't want to change the outside appearance of the pen, however, so I cut the blank such that the tube would extend from the lower barrel, and the tube would be recessed in the upper barrel. Part of the reason I chose a euro-style over a slimline, was to allow a thicker (and therefore stronger) unsupported section of the blank. The blank is made from alumilite white resin, which is strong and durable even without a brass tube. I selected a green marble pattern. This is the pen completed but with the halves separated.
And here is a photo of the finished, assembled pen. The only oddity, is that the refill extends with a counterclockwise twist (opposite how a regular slim/euro pen twists).
I hope that was interesting,
Eric
Normally, I avoid modifying refills, but since a customer can pull the plug out and stick in into a replacement refill, I think it's ok this time.
When attached this way, the transmission will need to be installed in reverse orientation, which necessitates a couple other design changes as well. Standard euro tubes won't grip the tube in this placement, so I cut new ones from some 7mm tube stock. This photo shows all the parts, with the refill screwed into the transmission. The transmission will press into the short upper tube.
I didn't want to change the outside appearance of the pen, however, so I cut the blank such that the tube would extend from the lower barrel, and the tube would be recessed in the upper barrel. Part of the reason I chose a euro-style over a slimline, was to allow a thicker (and therefore stronger) unsupported section of the blank. The blank is made from alumilite white resin, which is strong and durable even without a brass tube. I selected a green marble pattern. This is the pen completed but with the halves separated.
And here is a photo of the finished, assembled pen. The only oddity, is that the refill extends with a counterclockwise twist (opposite how a regular slim/euro pen twists).
I hope that was interesting,
Eric