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Old 05-22-2008, 04:31 PM  
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Default Polyurethane Curing Time?

What is the curing time for Polyurethane to harden enough so you can't dig into it with your fingernail? I'm having to wait on a test piece & would be nice to know if I'm looking at a few days or a few weeks as you all know, time & waiting can drive you crazy.

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Old 05-22-2008, 09:44 PM  
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Welcome Curtis:
Original Polyurethane should cure within 3 days, while the new water based type will usually take more like 7 days because it skins over quickly and it is difficult to cure underneath.
Of course, either type depends on temperature and humidity.
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