The true key to being able to use a WFP on windows without a resin bed or R/O system is hydrophylic glass. This can be done three different ways. First we can seal the glass with a hydrophylic coating or simply put chemically treat it. Or we could inject a Super Soap into the feed line of a WFP to dramatically reduce the surface tension of whatever water we are using, even tap water. Or as I am discussing in this post, we could microlap the glass with SKRUB. This physically deep cleans the glass by removing all hydrocarbon groups and what is called the near surface. The glass takes on its natural hydrophylic property which is actually enhanced because the micro-surface is now even more rough. There is essentially more surface area of glass per square cm for water to cling to.
First Clip
The full length Video
To apply SKRUB I first wet the glass with any type of cleaning solution. Then I put a few drops on the back of the flat hard felt pad. I use an F1. About 1/4 inch thick. I have glued a piece of 1/4 inch masonite to the back of this Makita random oscillating sander. It operates at about 10,000 OPMs. Then I glue the felt to the Masonite. Any other soft wood will do. Pine is especially useful. Now just go to it. The SKRUB will instantly mix with the cleaning solution making a perfect slurry. You can more easily control how much you use this way also. Further this techniques will not throw your polishing slurry all over the room. You will notice you can work right up to the edge of the glass without any mess. When done just soap and squeegee off. The glass wil be perfectly clean. You can even feel the difference. The polished side will be much more rough.
Now it takes not more than a minute per square foot to polish. Also it takes about 1/8 of an ounce of SKRUB to polish a square foot. So an 8 ounce bottle of SKRUB will do about four large sliding glass doors. Maybe more because SKRUB is a highly concentrated polishing compound.
The quality of the finished surface is quite high. If you look at the two clips here again you will see how water completely sheets over the surface. There is absolutely no beading. This is what we need for WFP work. The only drawback is the cost in money and time to set up the windows ahead. It is a permanent treatment. But if we can't get the customer to pay, and we are not going to be cleaning the windows frequently enough at a high enough profit, then it would not be worth the expense. In which case one of the other two alternatives might be the better answer.
Written by Henry Grover Jr.
henrygroverjr@gmail.com
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4 comments:
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