My question is will solder paste with 4% silver content solder to sterling silver?
I have a 6mm wide strip of silver and was thinking of reflowing an mtg2 to it. Or will I just be wasting my time?
Not got the solder yet….
Any advice will be much appreciated!
I seriously doubt that LED-->Solder-->Silver-->Solder-->Copper would be any better than direct to copper.
But its for the bling!
Yes, just for the bling sums it up nicely 
But about the solder, will it work?
This may be a dumb question, but how do you avoid shorting the cathode and anode when soldering to a bare strip of metal?
MCPCBs have a ceramic layer to electrically insulate the traces and pads, right?
You have to file out the bottom pads and then you attach wires to the top of the LED.
The silver is 6mm wide, the same as the solder pad on the mtg2. This leaves the electrical connections ‘easily’ accessible for soldering wires underneath.
Made a few copper slugs for xml the same way, its just a bit fiddly, but worth it.
Is there a thread on how to mod the LED? When I look at an XM-L all I see on top is green and two tiny metal-looking squares. Are those the top pads?
Edit: nevermind, just tried it, they are top pads. Needed to scrape off the top layer first.
Thx, lurned sumthin knew today! 
That’s a very cool way (pun intended) to do it. I have to try that at some point.
Might be easier to drill through the board and use something round tho.. ;)
I have a sterling silver tail plate and key chain loop on an SS-5039 because that was the material I had at hand. It soldered with 60/40 just like brass. Maybe a bit easier because it corrodes less. Heat conductivity is like copper or maybe a tiny bit better.