"Just reviving this because I've been running a 35w halogen very successfully in my Crestworth Astro. However, it blew after very little use, maybe 50 hours, certainly under 100, all in bursts of about 3 hours max. Has anyone else found…"
"Mr MaGoo, you're absolutely right.I've now reassembled the lamp with a screw-type fitting (I live in Italy and bayonet bulbs are extremely awkward to get hold of). But the first pic at the top of this thread shows the bulb holder in place.…"
"Something to note is that on my circa 1973 lamp, the hexagonal nut that holds the actual lamp holder in place is fixed to its opposing part by a tiny locking screw, which you need to release before you can unscrew the nut. Maybe later lamps had a…"