tube 4P1L ceramic socket holder

This is a Vacuum Tube Socket holder for the Russian 4P1L type tube.
It is intended for rapid protyping of vacuum tube amplifiers.
Thing is made in two parts: bottom and top.
The two parts are connected using self tapping screws.
Socket is connected to top part using 3mm screws.
If necessary re-drill holes.

You can check some other ideas about DIY Printed parts for tube audio in my site:
http://agalavotti.altervista.org/TubeGears/Tube_3d_printed_parts.html