In message , Andy Burns
writes
Fredxx wrote:

You can buy MES LEDs with a flat top on eBay for a few ££s.

These look ok, graeme could probably glue some form of pivot on top of them

Perfect! Yes, Dennis said something similar, regarding a pivot. I have
a stock of M2.5 washers, which fit Hornby axles (!), so may do the job.
Never having used LED bulbs, I hadn't appreciated that the 'glass' is
actually plastic.
--
Graeme