Mix ratio for sanding sealer?

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Mix ratio for sanding sealer?

Postby jaru-eri » Mon Jan 07, 2019 9:34 am

I tried to make a solution with 1 part resin to 2 parts alcohol, but it got very thick like a gelatinous mass. Do I need more alcohol in this solution or do I need to heat it up in order to get it more liquid?
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Re: Mix ratio for sanding sealer?

Postby scottp55 » Mon Jan 07, 2019 11:04 am

Sanding/Sealer as in 100% wax free shellac? Like Bullseye Sanding/Sealer?

Not understanding the "resin" part:(
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Re: Mix ratio for sanding sealer?

Postby tomgardiner » Mon Jan 07, 2019 2:32 pm

It sounds to me like the alcohol is incompatible with the resin. Alcohol works with shellac if it is high percentage. Read the label, your finish may require a proprietary reducer.
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Re: Mix ratio for sanding sealer?

Postby martin54 » Mon Jan 07, 2019 2:45 pm

probably need a bit more detail, lots of different types of resin available, I can't think of one that I would mix with alcohol though :lol: :lol: Come to think of it there are also a lot of different types of alcohol available, some almost pure & some with lots of additives.

What is it you are trying to achieve/are you looking to do, I have different types of sanding sealer for different types of work & also dofferent finish coats again dependant on the job or type of finish I want :lol: :lol:
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Re: Mix ratio for sanding sealer?

Postby jaru-eri » Mon Jan 07, 2019 6:18 pm

I used wax free shellac and methylated spirit. I need to use it for surface stabilizing before carving in order to avoid breakage at the top of the cuts. I have had the shellac for many years. Can it be out of date?
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Re: Mix ratio for sanding sealer?

Postby Leo » Mon Jan 07, 2019 6:24 pm

Shellac can definately be out of date.

The solvent for shellac is DNA or DeNatured Alcohol

Generally a sealer is a one pound cut. That means one pound of dry shellac flakes to one gallon of DNA. --- that is pretty thin - almost like water.

A three pound cut (3 pounds of flakes to one gallon of DNA) is a finishing cut.

The stuff in the can is already a mix so you would need to know the cut to figure out the 1 pound cut for a sanding sealer. OR you can just buy a can of sanding sealer
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Re: Mix ratio for sanding sealer?

Postby jaru-eri » Mon Jan 07, 2019 6:44 pm

Here is a google translate from a norwegian site that describe the alcohol:
-------------------------------------------
Red liquor is 70-95% denatured ethyl alcohol, ethanol. The red liquor is added to a denaturant which makes it useless for food and drink, and often the dye fuksin which gives a reddish color.
-------------------------------------------
So one pound to one gallon is ratio 1 to 8. Then my solution is wrong and I need to mix in more alcohol.
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Re: Mix ratio for sanding sealer?

Postby garylmast » Mon Jan 07, 2019 6:49 pm

Usually it's not recommended to thin resin, but I know for cleaning you use acetone. You might try that instead of alcohol.

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Re: Mix ratio for sanding sealer?

Postby ger21 » Mon Jan 07, 2019 6:52 pm

Dry shellac flakes have a shelf life of about 3 years.
Once dissolved in alcohol, the shelf life is about 6 months.
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Re: Mix ratio for sanding sealer?

Postby martin54 » Mon Jan 07, 2019 7:49 pm

jaru-eri wrote:Here is a google translate from a norwegian site that describe the alcohol:
-------------------------------------------
Red liquor is 70-95% denatured ethyl alcohol, ethanol. The red liquor is added to a denaturant which makes it useless for food and drink, and often the dye fuksin which gives a reddish color.
-------------------------------------------
So one pound to one gallon is ratio 1 to 8. Then my solution is wrong and I need to mix in more alcohol.


You might want to check what else is in the stuff you have before mixing more in :lol: :lol:
It may contain other additives which give problems with mixing with shellac :lol: :lol:
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