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View Dave Rutan's profile

Smoothing old finish

by Dave Rutan
posted 12-04-2018 12:05 AM


5 replies so far

View Oldtool's profile

Oldtool

2793 posts in 2726 days


#1 posted 12-04-2018 02:12 AM

Hard to determine whether or not that picture is before or after you solved the hazing problem, the right side looks like it still has moisture in the finish.

My opinion, for what it’s worth, would be to lightly sand the entire instrument with very fine paper, maybe 500 grit, until the entire body is a consistent color, then stain if desired and finish with a product of choice.

-- "I am a firm believer in the people. If given the truth, they can be depended upon to meet any national crisis. The point is to bring them the real facts." - Abraham Lincoln

View Dave Rutan's profile

Dave Rutan

1778 posts in 2724 days


#2 posted 12-04-2018 02:21 AM

I took the picture when it was still 1/2 and half. It’s now a pretty consistant hue, with brush strokes.

Do you think it’s possible that I could lightly sand the poly till the brush strokes are at least hardly noticeable and then maybe go over the instrument with some kind of oil? I’ve heard some luthiers use the old reliable BLO. The idea is to not refinish the instrument, but rather make it look acceptable for sale.

I think this instrument is more of a challenge than the one with the fractured face that I’m putting back together.


Hard to determine whether or not that picture is before or after you solved the hazing problem, the right side looks like it still has moisture in the finish.

My opinion, for what it s worth, would be to lightly sand the entire instrument with very fine paper, maybe 500 grit, until the entire body is a consistent color, then stain if desired and finish with a product of choice.

- Oldtool


-- Ni faru ion el ligno!

View WoodenDreams's profile

WoodenDreams

791 posts in 446 days


#3 posted 12-04-2018 06:35 AM

light sanding with eventually smooth out the brush strokes. I’d try 220grit first, then switch to higher grits as you get closer to smoothing out the brush strokes. With the thickness of the wood I’d be careful with the wood. After restoring this, you should have a nice looking instrument.

View Oldtool's profile

Oldtool

2793 posts in 2726 days


#4 posted 12-04-2018 01:05 PM

I’m not a finishing expert, but from what I’ve read, oil won’t penetrate through the poly, so doing this might yield two tones – areas with and without poly on the surface.

-- "I am a firm believer in the people. If given the truth, they can be depended upon to meet any national crisis. The point is to bring them the real facts." - Abraham Lincoln

View Dave Rutan's profile

Dave Rutan

1778 posts in 2724 days


#5 posted 12-04-2018 01:23 PM

I guess I could test that with a wipedown before deciding. I’m concerned that my lite sanding will leave a very dull finish.


I m not a finishing expert, but from what I ve read, oil won t penetrate through the poly, so doing this might yield two tones – areas with and without poly on the surface.

- Oldtool


-- Ni faru ion el ligno!

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