I googled Pedersen Device and learned that at least one person has made and fired a PD.
I can't seem to copy and paste on this site as I can on all other sites or I would have done so.
I don't know a damn thing about 3D printing, so I don't know if that program was used.
There is other interesting info on the site about the PD.
www.youtube.com, then type in Pedersen device.
Hope you find it interesting.