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Arm-R-Seal and Mahogany Endgrain

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Forum topic by Matt posted 01-17-2017 04:42 AM 480 views 0 times favorited 5 replies Add to Favorites Watch
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Matt

159 posts in 785 days


01-17-2017 04:42 AM

Hi Fellow LJ’s…...

I had some scrap end grain Wenge/Mahogany cutoffs that I figured that I would tun in to coasters at the same time as testing a possible finish for the project that the scrap was from. The majority of the non-scrap project isn’t end grain, in fact in the current design, there is no exposed end grain in that project. All that being said, the Arm-R-Seal on the end grain on the mahogany turned it VERY dark. I did expect it to a point, but I didn’t think it would be as dark, and herein lies the question: Are there any finishes for end grain mahogany that do not darken it.

-- My "projects" always look better with beer goggles.


5 replies so far

View OSU55's profile

OSU55

1422 posts in 1823 days


#1 posted 01-17-2017 01:25 PM

How long has the finish had to dry? It will lighten as it dries. Looks like a rough surface finish which will absorb more finish. Sand the end grain to 320 or 600 then burnish with a smooth metal surface. It crushes the pores limiting capillary action. There are water clear wb finishes, Target em8000 is one, that are actually water clear. Another alternative for small surfaces is CA glue.

View bbasiaga's profile

bbasiaga

1003 posts in 1829 days


#2 posted 01-17-2017 02:02 PM

You could also seal the end grain with shellac or something clear, so it absorbs less finish.

Brian

-- Part of engineering is to know when to put your calculator down and pick up your tools.

View bondogaposis's profile

bondogaposis

4475 posts in 2185 days


#3 posted 01-17-2017 03:03 PM

End grain always finishes a few shades darker than side grain. There are several ways to counteract it. One is to sand end grain down with finer grits than the rest of the project and/or two use a sealer on the end grain like Zinsser Bullseye sanding sealer or Charles Neil’s product.

-- Bondo Gaposis

View Matt's profile

Matt

159 posts in 785 days


#4 posted 01-17-2017 11:10 PM

OSU55 – That was about 6 hours of drying time, at 24 hours, I’d venture a guess it’s maybe 1/2 a shade lighter, no noticable difference. I only sanded to 220, thank you for the advice, I’ll try going to 600 next time and see how that changes things, thanks!

bbasiaga and bondogaposis – Thank you for the recommendations and further confirming OSU55’s recommendations.

-- My "projects" always look better with beer goggles.

View OSU55's profile

OSU55

1422 posts in 1823 days


#5 posted 01-18-2017 01:16 PM

Try a couple of samples. Sand both to 600, then burnish one of them with a polished metal surface, one the wont leave lines or other marks. A slightly convex surface works best. Dont have to use a lot of pressure.Really limits absorption.

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