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Yorkshire Grit substitute (Read 319 times)
 
Don Stephan
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Re: Yorkshire Grit substitute
Reply #15 - Dec 1st, 2018 at 8:03pm
 
I was not aware that some or all friction polishes include wax.  I only use one on the inside of the occasional turned lidded box, and came cross a formula that is equal parts 3#  cut DEWAXED shellac, boiled linseed oil (BLO), and denatured alcohol.
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Lee Watermann
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Re: Yorkshire Grit substitute
Reply #16 - Dec 1st, 2018 at 11:03pm
 
I use it mostly with resin and it's great in that application. On wood, if it gets a wax finish that's good. I have been trying to use it under Lacquer, on wood,  and if it isn't all cleaned off it will blush under the lacquer. It shows up several days later.

I have been using it for quite a while but now can't get an order out of Walnut log and he still has not responded to my calls and emails.
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Louie Powell
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Re: Yorkshire Grit substitute
Reply #17 - Dec 2nd, 2018 at 9:47am
 
The 1/3 shellac, 1/3 DNA, and 1/3 oil formula seems to be  the most common for shop-made friction polishes.

You can also use 1/3 lacquer, 1/3 lacquer thinner, and 1/3 oil.

Eric Anderson (The Naked Turner) uses a friction polish made from either Howard's Butcher Block finish (mineral oil and beeswax) or Howard's Feed'n Wax (orange oil and beeswax) - the basic formula is 1/3 Howard's product, 1/3 shellac, and 1/3 DNA.

Commercial friction polishes are another matter, and there are a great many formulas.  One (available from either PSI or William Woodwrite) is only lacquer and lacquer thinner - no oil or wax at all.

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Ed Weber
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Re: Yorkshire Grit substitute
Reply #18 - Dec 2nd, 2018 at 11:40am
 
Louie Powell wrote on Dec 2nd, 2018 at 9:47am:
The 1/3 shellac, 1/3 DNA, and 1/3 oil formula seems to be  the most common for shop-made friction polishes.


The oil is also important.
Mineral oil never dries,
BLO on the other hand will dry and can be used a an actual finish or at least a base coat.

Any friction polish with wax or an excessive amount of oil in it is never going to be as strong (durable) as a proper shellac finish on it's own. These other ingredients speed up the application process but weaken the shellac. Also, while a shellac based friction polish (or even straight shellac) will be dried enough to handle or sand in only a few minutes, it takes a few weeks to actually be fully cured.

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Mike Nathal
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Re: Yorkshire Grit substitute
Reply #19 - Dec 2nd, 2018 at 2:44pm
 
You can avoid all the problems with mineral oil by not using it.  Instead I use walnut oil for wet sanding.  All the benefits of wet sanding (less heat build up, no dust, ...)  plus the walnut oil cures to a nice finish.  You can add Danish oil or WOP on top of cured walnut oil.  You can also use walnut oil with some pumice to make an EEE/Yorkshire alternative.
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Don Stephan
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Re: Yorkshire Grit substitute
Reply #20 - Dec 2nd, 2018 at 5:50pm
 
My experience with a commercial walnut oil as a wood turning finish was that after a couple weeks the bottom of the bowl was still leaving an oily ring on a fresh clean piece of paper.  For that reason I'll not use anyone's walnut oil again, by itself or in a mix.
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mark stroud
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Re: Yorkshire Grit substitute
Reply #21 - Dec 6th, 2018 at 8:41pm
 
Hi all,
I received my Yorkshire grit order today from The Walnut Log,
I am looking forward to putting it to the test this weekend, and reporting on the use.
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