Plotter pen holder adapters

[andypiper]

Hello there! I see your README mentions Staedtler Triplus pens with an adapter, I don't suppose you're able to share a 3D printable adapter for a HP/Roland plotter for these pens? 🙏🏻

[anachrocomputer]

Hi, thanks for asking! I got the plotter from FreeCycle in 2009, and made the pen adaptors without the benefit of a 3D printer. In fact, I used the shells of dried-up pens to make them. I have some photos of the process in this album on Flickr:
https://www.flickr.com/photos/anachrocomputer/albums/72157624783555539/
and the Triplus pens are in this shot:
https://www.flickr.com/photos/anachrocomputer/6162442568/in/album-72157624783555539/
The darker pen shells are HP, and the lighter ones I think are Staedtler. All had dried up and were useless for plotting.

I made a pen adaptor out of brass which allows a Sharpie to fit the plotter. It needs to be very thin-walled and I don't think plastic would work. I used brass tube and a brass washer, soldered together and turned in the lathe.

Meanwhile, people have designed 3D-printable pen adaptors but I have not yet tried one. Hope that helps!