To that end, a 3D printer is the perfect tool for the job ... It’s vaguely reminiscent of a neon sign, but without any of the limitations of the glass tubes influencing how it looks.

For his Hackaday Prize entry, [castvee8] is making seven-segment displays out of vintage neon ... in a 3D-printed frame, giving [castvee] a real seven-segment display, a plus or minus sign ...