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Full Version: Any suggestions for cleaning a calculator?
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... Without having to take the calculator apart or leaving scratches or streaks? Thanks in advance.

I like the Delrin-handled Clean Room brushes available from McMaster Carr. They are pricey, but the 0.008" diameter bristles are the perfect size and stiffness to clean dust and lint out keyboards and LCD bezels gently and will not scratch.

The part number is 7265T33.

bristle material dia.  bristle length    part     cost
0.008" Nylon 3/8" 3/4" 5 1/4" 7265T33 $8.86