Solder flux ?

[tobnpr]

I've got a sight restoration/replacement to do on a milsurp.
I plan on using Hi-Force 44 solder, but the Comet flux that Brownell's pairs with it appears to be too thin and inadequate from the reviews.
Fluxes and brazing aren't my specialty... what/where for a flux that would work well with a low-silver content solder like this?

 

[jkohler]

This should work nice for you

 

[Trophied]

From someone who used to sell the stuff, Yep. Don't put it anywhere you DON'T want solder to go

 

[tobnpr]

^^^
Still, a 1,050 degree melt point- more than I'd like to use directly ahead of the chamber if I can avoid it. Yeah, I have heat paste- I'd rather not need to use it. It's a long sight base and will require quite a bit of heat over a couple of inches of barrel.

Wouldn't any rosin, paste-flux work, like this?

8342 - RA Rosin Flux Paste

8342 is a premium RA rosin flux paste with moderate activation and a stiff pastelike consistency. It is easy to use and stays where it is applied.

www.mgchemicals.com

 

[jkohler]

You need to use the right flux for your application. Not all fluxes are the same make up. This one will work at the lower flowing point.

 

[tobnpr]

^^^
Thanks, on order.