Thanks to a kind member of these forums, I purchased a couple of 150W bulbs. That should keep me going for a while.
I would prefer to buy from within the UK if possible, though I could look into getting bulbs from abroad.
I have seen the 75W bulbs on the Paterson site, but I think something like 150W would probably be better.
Can heat cause problems for these bulbs? The lamphouse of this enlarger is getting extremely hot just by having it switched on for a couple of minutes. I know times like that are not necessary when exposing paper, but I need a reasonable amount of time to a) admire the image prior to making a print and b) to get the focussing and size correct.
Obviously the bulb will get very hot, but unfortunately the case with electrical/electronic things is that heat is their worst enemy, despite them producing lots of it.
Thanks
Stephen Coates