Prepping for final coat of varnish

Builder's Forum
1

this afternoon I applied the third coat of interlux varnish to my teardrop camper. I will wet sand with 400 grit before the final coat.  Is it sufficient to let the third coat dry/harden overnight before sanding or should I let it sit an extra day?

Thanks

Ken

2

Maybe, maybe not, depends entirely on the temperature and humidity.  

Laszlo

3

   Low 70's and 50% humidity (dew point 55 degrees) today, prob drop to upper 60's in the workshop overnight.

 

4

If it was mine I'd wait the extra day.

Laszlo  

5

   I was leaning that way.  Thanks