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Question About Finishing Blood Wood

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Forum topic by BobVila posted 12-04-2017 12:56 PM 150 views 0 times favorited 3 replies Add to Favorites Watch
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BobVila

18 posts in 30 days


12-04-2017 12:56 PM

Will the finish make this discoloration go away?

I sanded this down to a 2500 grit and I love the look & feel. It almost looks & feels like stone, it’s so dense and smooth.

Anyway, notice how the end of this piece looks scratched and lower than the rest.

Is there a way to fix this? What did I do to caues this? Or do I just need to avoid going over the edges when sanding?


3 replies so far

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tomsteve

663 posts in 1054 days


#1 posted 12-04-2017 01:18 PM

it looks like with the lower grits hit the end and the higher ones didnt. to keep ends,edges square, its good practice to use sanding blocks. to fix the rounded/lowered end, start over with sanding blocks. if the piece isnt that big, you could also put the sand paper on a flat piece of wood and move the wood over it instead of moving the sandpaper over the wood..
im not sure what discoloration youre referring to or what finish you are planning to use,so thats hard to answer.
2500 grit-dont think ive ever read of someone going that far on wood.

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JBrow

1273 posts in 754 days


#2 posted 12-04-2017 01:28 PM

BobVila,

I am guessing that the random orbit sander (ROS) was used on the upper surface. I have noticed that extra material can be removed at the edges when sanding with the ROS. I have yet to figure out how to prevent this problem and still sand all the way to the edges or understand why more material is removed near the edges. My thought is that when the ROS pad cantilevers over an edge, the pad is no longer fully supported and where the ROS meets the edge a slight angle is introduced. But that is only a guess.

Also some extra material could have been removed if the eased end was produced by rolling the ROS over the edges.

You may get a good indication of how the piece will look when finished by applying paint thinner or mineral spirits to the piece at the end where the lighter color is evident. The lighter color at the end is reminiscent of unremoved sanding dust.

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BobVila

18 posts in 30 days


#3 posted 12-04-2017 02:42 PM

Ok, I’ll try a brush or something to try to remove it first. If it won’t go, I don’t know what I’m going to do, it’s really bothering me.

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