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Walnut oil and sanding sealer. (Read 128 times)
 
Don R Davis
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Walnut oil and sanding sealer.
Nov 2nd, 2019 at 8:25pm
 
So which should go on first, the Walnut oil or the sanding sealer?
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Al Wasser
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Re: Walnut oil and sanding sealer.
Reply #1 - Nov 3rd, 2019 at 10:04am
 
If you use walnut oil, skip the sanding sealer.  That is unless there is more to you plan than you stated.
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Ed Weber
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Re: Walnut oil and sanding sealer.
Reply #2 - Nov 3rd, 2019 at 11:18am
 
Oils penetrate into the wood pores
Sealers clog up the pores, sealing them from further penetration

If you put the sealer on first, the oil will not penetrate
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Don Stephan
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Re: Walnut oil and sanding sealer.
Reply #3 - Nov 3rd, 2019 at 11:33am
 
What is the intended outcome?  Oil finish?  Filled pore finish?  Sanding aid for removing tearout?  Something else?
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Ed Weber
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Re: Walnut oil and sanding sealer.
Reply #4 - Nov 3rd, 2019 at 11:42am
 
Where and how it's going to be used usually determines the finish.
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Don R Davis
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Re: Walnut oil and sanding sealer.
Reply #5 - Nov 3rd, 2019 at 9:22pm
 
I am making at least four shallow bowls out of Padauk. They will be used to put car keys change and whatever a guy might have in their pockets at night before going to bed. I have read that a lot of folks use a sanding sealer so I thought about giving it a try.
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Ed Weber
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Re: Walnut oil and sanding sealer.
Reply #6 - Nov 4th, 2019 at 9:41am
 
Don R Davis wrote on Nov 3rd, 2019 at 9:22pm:
I have read that a lot of folks use a sanding sealer so I thought about giving it a try.

if, as I'm guessing, your sanding sealer is shellac, you need to be careful.

Padauk
Here is some info that I cut from various sources. They all have the same conclusions and I don't have to write it all down.  Grin

Because padauk’s pigment is alcohol-soluble, brushing or wiping on shellac can cause the color to bleed or smear onto adjacent lighter woods. To avoid problems, spray on a few light coats of shellac to seal the color before using a brush or rag to apply subsequent shellac coats. Alternatively, use lacquer or varnish.

The wood’s natural oils have been known to retard the drying times of oil-based varnishes, but don’t seem to affect water-based finishes. (Wiping the wood with acetone can help by removing some of the surface oils, but test the wood before you commit to a particular finish.) Oil-based penetrating oils or wiping varnishes are generally a good choice, although they tend to darken the wood more than water-based finishes.
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Almost every forum having anything to do with woodworking has at least one thread devoted to finishing padauk.


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Mike Nathal
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Re: Walnut oil and sanding sealer.
Reply #7 - Nov 5th, 2019 at 8:06am
 
The only time I use a sealer before walnut oil is with walnut wood.  Frequently with walnut I get uneven penetration of the oil, some portions seem to (edited out) up the oil and keep asking for more.  Sealer helps to even things out.
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Don Stephan
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Re: Walnut oil and sanding sealer.
Reply #8 - Nov 5th, 2019 at 3:51pm
 
Seems counterintuitive to apply a penetrating oil finish on a sealer surface.  But if you are comfortable with it and like the result keep doing so.

Your experience with a wiping oil is quite normal- I sometimes have to apply 3 coats of wiping varnish  before the wood stops showing dry spots.  And that is a shop mixed wiping varnish with probably more resin than commercial ones.
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