cerberuss,
I see 2 points on your post:
1. The clicky might melt.
2. The O-rings might melt.
And you commented the "the light is solid aluminium", I totally agree.
But......
Basically what's left of it after the clicky and the O-rings melt IS the aluminium part, right? (well and the glass lens)
Is this supposed to be a joke or something? LOL. :laughing:
You can use a twisty, but that twisty is rock hard and the IMR18650 cells are shorter then the usual 18650 cells, contact might be an issue. Not to mention the spring on the twisty is very questionable if it can take the heat and the high current.
Well seriously, if I am to make a 800-900 Lumens lamp for it the current draw will be even higher then the current IMR-M3T (700 Lumens) which is already drawing 3.4A.
So making a lamp for the WF-500 at 3.4A+ will probably not be a good idea. Most of all, I am suspecting that some guy might buy the lamp and use it on the stock UF batteries that comes with the torch. I could not imagine what will happen next, so I better leave it at that.
I am in a fairly good mood, so please do not misunderstand the tone of my post.
Cheers,
Mark