Reply by splintergroup

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Posted on Grain filler used with Ammonia fuming quartersawn white oak?

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4160 posts in 2145 days

#1 posted 09-14-2017 04:45 PM

Splintergroup, do you scrape/wipe the danish oil slurry off before letting it dry as with other grain filling techniques? And do you sand between applications?

- madebyhand

No and yes 8^)

The sanding slurry is left to dry a few days followed by a regular sanding. Additional slurry-sands are done if needed, but typically I’ll just do the initial coarse-grit, let it dry, then finish sand with finer grits. Sometimes I’ll apply more oil, but not do any additional sanding..

Fuming goes deep. One reason I like it is often with a clear top coat, if I sand too aggressively near a sharp corner, a surface stained with a typical oil based stain will be removed. Mistakes like this on a fumed surface rarely reveal unexposed wood since the fuming penetrates much deeper.

A simple test would be to take a test board and divide it in two. Fume the first half and apply an oil to the second half, slurry-sanding and repeating until you have the desired degree of pore filling.
Fume this piece after it has maybe a week of drying and repeat the technique on the pre-fumed piece.

Which do you like better? the fume-fill piece or the fill-fume piece.

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