Making the copper pill.
Filed down a scrap piece of 20mm copper bar and brass ring to 18.92mm.
Parts soldered together.
Soldered the parts together with some copper sheet insert and copper wire using a dual flame jet lighter with the parts placed on a ceramic tile with solder paste in the joints.
Cleaned up with wire wool, sandpaper then metal polish.
First a scrub all round with coarse wire wool then a rub on some 800 grit sandpaper, keeping the face flat down to finally a polish on some old newspaper with a dab of liquid polish on it.
Cleaned up.
Showing the pill inside the inner core tube. 
This will eventually be cut to shape and fixed in place. 
Showing preliminary core flashlight parts.
This is an old reflector used for checking fitment only.
Pill inside inner core inside outer core with MCPCB & reflector in rough positions. 
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