NathanFoxEllis Posted March 25, 2015 Report Share Posted March 25, 2015 Hello, I was wondering if anyone could take a look at the pictures and help guide my investigation into what went wrong. I sanded the surface to 400 Wiped with a tack cloth Applied a coat of Watco Danish Oil Let dry for 15hrs Sprayed with Poly On the first pass I started to get these white marks in the grain and I'm trying to figure out where I went wrong. In doing my research so far it seems the problem could have come from 3 things. Over sanding before oil Not letting oil dry enough Dust in the grain. Can anyone help guide me to a more specific answer? Quote Link to comment Share on other sites More sharing options...
wdwerker Posted March 26, 2015 Report Share Posted March 26, 2015 What kind of poly did you spray it with ? I usually give Watco a week or 2 before I finish over it . Quote Link to comment Share on other sites More sharing options...
Bombarde16 Posted March 26, 2015 Report Share Posted March 26, 2015 First pass of sanding, correct? Dust in the pores is normal when sanding between coats. Tack rag (or even just a wet cloth) it off and apply the second coat. Quote Link to comment Share on other sites More sharing options...
wdwerker Posted March 26, 2015 Report Share Posted March 26, 2015 I think it turned white as soon as he sprayed it. At least that's how I read it. Quote Link to comment Share on other sites More sharing options...
NathanFoxEllis Posted March 26, 2015 Author Report Share Posted March 26, 2015 Yes it turned white as soon as I sprayed it, I did blow and tack cloth it clean before watco. Quote Link to comment Share on other sites More sharing options...
wdwerker Posted March 26, 2015 Report Share Posted March 26, 2015 What kind of Poly did you use? Was It full strength or thinned out? Water based or solvent based? Quote Link to comment Share on other sites More sharing options...
NathanFoxEllis Posted March 26, 2015 Author Report Share Posted March 26, 2015 Solvent based, full strength. Quote Link to comment Share on other sites More sharing options...
wdwerker Posted March 26, 2015 Report Share Posted March 26, 2015 Watco wasn't dry yet. 1 Quote Link to comment Share on other sites More sharing options...
estesbubba Posted March 26, 2015 Report Share Posted March 26, 2015 Don't if you're gaining anything doing Watco under oil poly. Thin the poly with mineral spirits for first coat and you'll probably get the same look with less chance of problems. Did you wipe the Watco dry after 15 minutes and check back a couple hours later and wipe off any bleedback? Quote Link to comment Share on other sites More sharing options...
estesbubba Posted March 26, 2015 Report Share Posted March 26, 2015 One other thing is I'm not a fan of tack cloths. There are safer ways to clean the surface - lint free cloth dampened with mineral spirits, microfiber cloth, or vacuum the dust. Quote Link to comment Share on other sites More sharing options...
Trip Posted March 26, 2015 Report Share Posted March 26, 2015 ==>^^^ Try a simple experiment, sand a panel of Padauk... Use compressed air, vac and microfiber cloths, rags dipped in mineral spirits, etc until you remove all the dust you can... Now use a tack cloth... Notice how much remaining dust you collect... In most cases, this incremental difference isn't important -- actually, it's almost never important... But if you’re working inlay, marquetry, parquetry, etc then that little extra reduces color-bleed… I learned this lesson the hard way --- I was making a chessboard and got color-bleed at the margins… I don’t use tack cloths all that often and certainly not around WB coatings… But they have their place… Quote Link to comment Share on other sites More sharing options...
waho6o9 Posted March 26, 2015 Report Share Posted March 26, 2015 I think the minimum dry time per instructions is 3 days. Sent from my iPhone using Tapatalk Quote Link to comment Share on other sites More sharing options...
AceHoleInOne Posted March 26, 2015 Report Share Posted March 26, 2015 As previously mentioned above, Watco not dry. -Ace- Quote Link to comment Share on other sites More sharing options...
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