Hi ruff, I know your thread is supposed to be about lense cleaning, but while we are on the subject of mirror cleaning i have found something that works for Newt. mirrors.
This is only MHO, but If you really, really must swab the mirror surface to clean it while it is immersed in whatever concoction you have decided on, then using a smallish supersoft camel hair plastic brush is a safer bet than cotton swabs for a number of reasons- two of them are that you can better see and feel what you are doing in terms of pressure on the surface and also there is less chance of stroking the coating with your fingers/nails (I try to cut mine first!).
Well this has worked for me and no doubt this idea might cop some flak, we can only decide for ourselves.
steve
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