Hey one more little trick that I discovered while brazing my waterblock together... If you want to have some control over where the solder bonds, try coating a side with PERM marker (Sharpie) and it'll smoke a little till it's solvent free, but watch as the brazing material magically stays unbonded to the perm-marker side! Works really well for controlling flow of the solder and can removed with alcohol or some other solvent.... Remember EYE protection!
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XP 1600+ AGOIA-Y (GreenLabel, UNLOCKED!@/ NF7-S 2.0/ PC 2700 DDR
10.5*172FSB(1806/ 1991 high), Vcore 1.792...@84.95Watts
--86' Chevette Heater Core
--1/2" Vinyl tubes
--Via1300-Stealth Mod(QUIET!) 
---Home made copper-tube block
---PVC small internal res
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