Neutralizaion is ESSENTIAL for good patina. If you delay a day or so between cleaning and patina you'll need to clean the solder with steel wool or a nylon scrubbie pad because solder begins to oxidize as soon as it's cool. This leaves your solder seams shining like silver and they're VERY well prepared for any kind of Patina. ![]() I WASH (neutralize) my projects with Household Ammonia and HOT water (and a soft tire brush), then Dawn dishwashing detergent with another HOT water rinse. : 4) Preliminary cleaning of a panel is essential for good patina and avoidance of problems. You're not taking any patina off (unless you rub at this stage) because it will already have eaten into the solder in the minute or 2 it takes to go from application to rinsing. However you do it.DO NOT let that patina dry on the glass. Most of us do what we call "wet-slopping" of a LOT of patina with immediate rinsing. Some people even put the panel in a sink and POUR patina all over it (messy, messy). : The point is NOT to allow any drying of patina and minimum exposure time for the glass. If the panel is large, do one side and RINSE before you do the other side. There's NO WAY you can avoid getting patina on the glass, so just be sure it stays WET. Use several cotton balls or a rag to get it on fast.and RINSE it off the glass with water almost immediately. Forget the business of putting it on with Q-tips etc. The cure for this (assuming you don't have any of the other problems) is to apply patins QUICKLY. This usually occurs just at the edges of the solder and can often be removed with the cleaners mentioned. : 3) if your patina DRIES on a piece it's MUCH more likely to react with the glass. Doesn't come off with patina removers, toothpaste or polishes. You're MUCH more likely to see this happen immediately and it's probably as permanent as any stain. Probably, it's the combination of the metallic solder. This reacts on the surface with patina to cause a problem. REDS, BLACK and Greens are manufactured sith a mineral based pigments. Sometimes is removable early into the problem.often not. ![]() This is more likely to be an overall discoloration. Some regional waters (well water esp.) contain minerals which react with the patina and/or flux causing the "rainbow" discoloration effect. Copper is a 'plating' that sits on the surface. Black is an acid that etches a chemical reaction into the metallic solder. Keep in mind that this applies to BLACK PATINA, because COPPER is another entity altogether. ![]() So, I will give you all the theories I know about why. I've tried many times to duplicate the glass discoloration problem in my little glass studio but it just won't happen. : Christine, I can't talk about this problem from experience because it has NEVER happened to me. In Reply to: Patina quirks posted by Angel on Novemat 10:11:05:
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