I don't think the case alone would suffice as a heat sink by itself, not for this amount of heat.
Originally Posted by SemiMan
That is a good idea.
I've always wanted to do something like this. One suggestion if you need more flood move the whole LED plate forward so the optics rest on or close to the glass window. and you could use the space behind for a fan and/or more heat sinking mass
This was the thread I was trying to find.. I was thinking about doing the same to my flood light since the bulb blew and hard to find a replacement. But curious how the heatsink is mounted.. did you have to drill or anything like that?
With this particular light I had to cut a notch in the back to attach the junction box for the driver. The junction box and heat sink are 'glued' in place with JB weld. It has held up great so far with fairly rough usage at work.