I had a couple of machines lately, that had a dirty hard to get to photocell causing an issue. In both cases I went to my truck, retrieved a drinking straw and used it to blow out the photocell with out removing more screws. I then found in the sporting goods section at Wally World, a set of stainless steel drinking straws for $3. Now my latest handy tool in my bag. Also used one to get lube to a bearing without getting it everywhere else.
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