Re: Plastic window in sand blaster..
Lose the plastic.
I replaced the plastic with a single sheet of glass cut to fit. I figured it would just be disposable but so far it is still clear and has lasted about 3 times longer thzn any of the plastic sheets. Cost was $4 at Ace.
Have done the same for the light and it is fantastic to be able to see clearly what i am working on.
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