I received a used 35mm negative carrier for my LPL 4550 enlarger and found that a screw is missing. It was an OK price ($50), so rather than return it, I thought I’d try to get a replacement screw. Using what is supposed to be a good digital caliper, but having very little experience using it, I got an average of 1.9mm (a little more actually) across the threads and length of 2.87mm. Japan is stamped onto the carrier, so I presumed metric. Looking on the web for screws, I found M2 x .4 x 3mm which is closer than an M1.8 screw would be, I imagine (I didn’t see any M1.9). So anyone happen to know, or would help me with an educated guess if the M2 size might be the one? The screws are not crazy expensive so ordering both sizes is an option – but 50 in each pack means I’ll have to find a place to store 99 more screws in the garage. Also; any reason to not use thread locker on the threads of the new screw (after I know it fits)?
One other thing: it seems that a previous owner may have filed the edges of the opening to make it larger -- resulting in really shiny edges that would be facing the negative top and bottom. I should paint those edges flat black, right?
Thanks in advance for any suggestions.
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