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Celluloid Binding


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I just repaired a tiny gap in a celluloid binding butt joint (two places) by dissolving a shaving of celluloid in a couple drops of acetone.  Worked GREAT, but the weld swelled up like a birthday balloon.  How long should I expect to wait (to shrink) before I can sand/ scrape it back flat?  I'm anxious to get back to my project...

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Hey there,

I'm surprised that it swelled up.  I always dissolve my plastics in an even mix of MEK and Acetone. The acetone is fast flashing but has a great bite, the MEK is slower flashing and will continue to melt the plastic even after a few hours. I usually have to drop fill with the plastic slurry twice, the second time would be after the first fill sinks.

If its still protruding (balloon), I would take a fine file to it.

Best,

-Greg

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