When using these powders I work over large plastic containers (a different one for each grade) therefore catching the run off I also keep the cleaning and rinsing water, after a short while the powders settle to the bottom of the container and I drain off the excess water and gather the powders for future use.
Mechanical devises are not always necessary; in fact all that mechanical devises do is to speed up what can be achieved manually. If you were to drip gritty water onto a stone, after a few centuries you will have a stone with a hole in it or at the very least a dent.
I do not claim that a few minutes in front of news at 10 will restore all your items but a few minutes in front of news at ten over a period of time will definitely bring results.
This kit has not been put together for the professional restorer but for the amateur who has the time and patience to restore their items.
I received the following email the other day, results can be achieved manually.
Just a note to say thank you for this excellent kit. I was
surprised to get the tubs, as the listing doesn't make it clear that
they are included.
Do you list these kits in the "watches" section of eBay?
I collect watches, and they often turn up with damaged crystals.
With plain plastic crystals, it's normally easier to fir a new one,
as they are cheap.
Watches that use fancy shaped crystals, or mineral glass, usually
need to be restored, as replacements can be difficult to find.
I've tried many of the commercial polishing agents, with limited
success. I spotted your kit, and thought I'd give it a try on a
modern low-domed mineral crystal which I'd already attacked
with wet-or-dry and some very expensive cutting compound.
The results using your kit were amazing, just using the chamois
patches by hand. Came up as good as an identical new watch!
Next time I see a crystal polishing question on a watch forum,
I'll be sure to recommend your kit.