Re: I don't want to attach a SF defuser. What's the best way to defuse my SF E2DL?
I've been in the RC hobby for years, and my favorite part of the hobby is building from plans (not from kits).
There is a product sold for the purpose of making stiff templates by etching through the film while being laid over the plan.
It turns out that what it really is (but is being sold for template use) is simply photographer's diffusion film.
It's nice and stiff (maybe .011" thick), and what I do that works perfectly on lights like the Surefires with glued-in lenses is to simply cut a circle of the film that's a very, very ,very small smidgeon in size larger than the inside of the light's bezel.
Then what you do is to press the diffuser on top of the lens and the friction fit of the edge of the film to the bezel holds it on even when dropped. But if you want to remove it, you just take a razor blade and carefully catch an edge of the diffuser and pop it off.
On the other hand if you have a light with a removeable lens (like my DBS), what I do is to cut a round piece using the lens itself as a guide so that the diffuser is exactly the same size as the lens.
Then you just take off the bezel and lay the diffuser material on top of the lenz and screw the bezel back on which holds the diffuser in place as permenantly as you like until you want to remove it.
I've yet to see this material affected by heat from any of my lights, probably because it's used in it's original form to be put over Klieg lights in a photographer's studio.
$5.00 will buy a sheet 22" x 52", and that's large enough to diffuse a lifetime collection of lights.
http://www.seetemp.com/products.php
Just my .02, but it works great.