Finishing with Yolyurethane


  #1  
Old 01-18-07, 06:37 AM
J
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Finishing with Polyurethane

I'm in the final stages of my ladder shelf, but I've got a few questions on the finish. I'm using Varathane polyurethane. I've tested it on the back without the best results. The finish feels slightly grainy to the touch, whereas I thought it would feel incredibly smooth. So... Here are my questions.

1) Should I sand between coats?

2) If I should sand between coats, what grit should I use?

3) Can I sand the final coat?

4) How many coats should I apply?

Thanks in advance, it's really turning out great!

Jeremy
 

Last edited by jeremy1701; 01-18-07 at 06:45 AM. Reason: typo
  #2  
Old 01-18-07, 10:19 AM
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Definitely sand between coats. I use 400 grit, but 320 is probably fine enough. The final coat shouldn't need sanding. Number of coats is kind of subjective; I usually go 3.
 
  #3  
Old 01-18-07, 10:25 AM
M
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I think TG likes to work too hard

I'd use 180 grit sandpaper for the first coat of poly/varnish and 220 grit for the second coat. 3 coats is usually sufficent but you should always sand and dust before applying another coat.

Some like to use steel wool and buff the final coat for an extra slick finish. Personally i think 3-4 coats [with no buffing] is good enough.
 
 

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