I built a big sill for a bow window, using birch "roasted" by a local
mill to give it a dark brown tone similar to mahogany. Anyway, I
planed and sanded it to a finish that looked pretty darn good, and
applied a coating of linseed. The finish was gorgeous, but
unfortunately, a few thin spots of gal-oo that I hadn't detected
earlier showed through pretty bad.
A few days later, I sanded out the glue spots, and reapplied the BLO.

This is where it went South. The spots that had been sanded clean just
stayed matte, almost as if they just weren't taking the oil. I'm
wondering if the sanding process had some sort of sealing effect on
the wood, the oil/dust being ground right into the wood.

I could try and plane and sand it all, but I'm afraid I'll end up with
the same problem. I could also try to just flip it over and use the
other side, but I like this side better.

Any ideas on how I can save this?

Thanks

bob wrote:
I built a big sill for a bow window, using birch "roasted" by a local
mill to give it a dark brown tone similar to mahogany. Anyway, I
planed and sanded it to a finish that looked pretty darn good, and
applied a coating of linseed. The finish was gorgeous, but
unfortunately, a few thin spots of gal-oo that I hadn't detected
earlier showed through pretty bad.
A few days later, I sanded out the glue spots, and reapplied the BLO.

This is where it went South. The spots that had been sanded clean just
stayed matte, almost as if they just weren't taking the oil. I'm
wondering if the sanding process had some sort of sealing effect on
the wood, the oil/dust being ground right into the wood.

I could try and plane and sand it all, but I'm afraid I'll end up with
the same problem. I could also try to just flip it over and use the
other side, but I like this side better.

Any ideas on how I can save this?

Thanks

wide belt sander?

"bob" wrote in message
...
I built a big sill for a bow window, using birch "roasted" by a local
mill to give it a dark brown tone similar to mahogany. Anyway, I
planed and sanded it to a finish that looked pretty darn good, and
applied a coating of linseed. The finish was gorgeous, but
unfortunately, a few thin spots of gal-oo that I hadn't detected
earlier showed through pretty bad.
A few days later, I sanded out the glue spots, and reapplied the BLO.

This is where it went South. The spots that had been sanded clean just
stayed matte, almost as if they just weren't taking the oil. I'm
wondering if the sanding process had some sort of sealing effect on
the wood, the oil/dust being ground right into the wood.

I could try and plane and sand it all, but I'm afraid I'll end up with
the same problem. I could also try to just flip it over and use the
other side, but I like this side better.

Any ideas on how I can save this?

Thanks

You're right about it sealing the wood. Wet sanding with BLO or Watco is a
good grain filler. Instead of sanding, use a scraper. It will make chips
instead of dust.

On Thu, 11 Feb 2010 08:43:13 -0800 (PST), bob
wrote:

I built a big sill for a bow window, using birch "roasted" by a local
mill to give it a dark brown tone similar to mahogany. Anyway, I
planed and sanded it to a finish that looked pretty darn good, and
applied a coating of linseed. The finish was gorgeous, but
unfortunately, a few thin spots of gal-oo that I hadn't detected
earlier showed through pretty bad.
A few days later, I sanded out the glue spots, and reapplied the BLO.

This is where it went South. The spots that had been sanded clean just
stayed matte, almost as if they just weren't taking the oil. I'm
wondering if the sanding process had some sort of sealing effect on
the wood, the oil/dust being ground right into the wood.

I could try and plane and sand it all, but I'm afraid I'll end up with
the same problem. I could also try to just flip it over and use the
other side, but I like this side better.

Any ideas on how I can save this?

Thanks

What kind of sandpaper? What grit? Try garnet 180 or 220 for this
purpose. The other suggestion to use a scraper is also good. I wonder
if they meant "cabinet scraper" or not. Where the comment was "chips",
I get fine "shavings" if I've tuned and burnished the cabinet scraper
up recently (which is just a rectangular piece of the right kind of
metal).