01A Vacuum Tube

thingiverse

Restoring a 1920's Atwater Kent Model 30 radio. Don't want to use tubes and high voltage, so replacing the electronics with low voltage FET circuitry. But...hidden inside 3D printed tubes. The top "glass" portion is printed with clear ABS and has bumps that lock it into grooves in the base. Base is plain black ABS. Trick to hull sphere and cylinder to make shape of tube top from here: https://cubehero.com/2013/11/19/know-only-10-things-to-be-dangerous-in-openscad/ Will eventually build small FET circuits into the base with light and gain controlled by the filament voltage. Inspired by this: http://www.antiqueradios.com/forums/viewtopic.php?f=19&t=81553&hilit=01a Print Settings Printer Brand: Solidoodle Printer: Press Rafts: No Supports: No Resolution: .3mm base, .2 mm glass Infill: base 30%, glass 0% Notes: Base is a fairly normal print. "Glass" portion is 3 perimeters, no base layer so it's hollow. Very small hole left at the top, I'll work on print settings to close that. Post-Printing Base holes drilled out to size for 1/8" and 5/32" solid brass pins from standard hobby store material. Haven't tried smoothing the top yet.