LumberJocks

All Replies on Sanding Polyurathane Before Applying Pour-On Epoxy?

  • Advertise with us
View johnnySmith's profile

Sanding Polyurathane Before Applying Pour-On Epoxy?

by johnnySmith
posted 01-27-2017 05:22 PM


7 replies so far

View Woodknack's profile

Woodknack

12945 posts in 2941 days


#1 posted 01-27-2017 06:01 PM

Should be fine, test on a scrap board first, always.

-- Rick M, http://thewoodknack.blogspot.com/

View MrUnix's profile

MrUnix

7530 posts in 2760 days


#2 posted 01-27-2017 06:25 PM

The Polyshades became cloudy because of all the scratch marks left by the steel wool.

That is what it does. Always. And it will disappear after the next coat if you were to put one down.

Epoxy bonds mechanically to whatever substrate you put it on. If there is nothing for it to bite into, it won’t hold. That is why you need to sand or otherwise rough up the surface prior to application. If you don’t give it something to bond to, it will fail.

Cheers,
Brad

-- Brad in FL - In Dog I trust... everything else is questionable

View TheFridge's profile

TheFridge

10859 posts in 2047 days


#3 posted 01-27-2017 06:35 PM

Bar top epoxy sticks like a SOB.

-- Shooting down the walls of heartache. Bang bang. I am. The warrior.

View woodbutcherbynight's profile

woodbutcherbynight

5975 posts in 2970 days


#4 posted 01-29-2017 03:07 AM

If you are going to use epoxy over the poly let the poly dry for several more days, often referred to as “cured.” I am sure this could be a topic of great debate but all too often people get upset that a finish does this or that. When you get the whole story you find they applied the night before and wanted to use the next morning. It may be dry to the touch but letting it sit for a few days to get completely cured makes a big difference.

-- Live to tell the stories, they sound better that way.

View cjg225's profile

cjg225

7 posts in 1030 days


#5 posted 02-11-2017 09:37 PM

A woodworking n00b here…

Why would you put epoxy over a polyurethane finish? I guess a more basic question is, is poly merely a “looks” finish instead of any form of “protective” finish?

View OSU55's profile

OSU55

2450 posts in 2550 days


#6 posted 02-12-2017 01:27 PM



A woodworking n00b here…

Why would you put epoxy over a polyurethane finish? I guess a more basic question is, is poly merely a “looks” finish instead of any form of “protective” finish?

- cjg225

Poly is definitely a very protective finish. Sounds like the OP used polyshades to color the wood, and the epoxy to get a bar top like finish. A more typical approach would be to use dye or stain to color the wood and epoxy over that.

View cjg225's profile

cjg225

7 posts in 1030 days


#7 posted 02-12-2017 02:37 PM


Poly is definitely a very protective finish. Sounds like the OP used polyshades to color the wood, and the epoxy to get a bar top like finish. A more typical approach would be to use dye or stain to color the wood and epoxy over that.

- OSU55


Okay. Thanks. I just finished a project with poly and was wondering, “Did I just give it good looks rather than actually any protection?”

Have your say...

You must be signed in to reply.

DISCLAIMER: Any posts on LJ are posted by individuals acting in their own right and do not necessarily reflect the views of LJ. LJ will not be held liable for the actions of any user.

Latest Projects | Latest Blog Entries | Latest Forum Topics

HomeRefurbers.com