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Old 06-29-2018, 06:48 PM   #1 (permalink)
 
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Default Wet sanding wood?

Probably a very dumb question, but they say the only thing dumber than a dumb question is the dumb guy who doesn't ask it.

I keep seeing mentions of wet sanding. I'm a newbie with only 8-10 pens under my belt, but I'm trying to learn as many techniques as possible. My first five pens were all dry sanded and micromeshed down to 12000 and then CA-finished. They all came out amazingly.

Then I decided to try wet sanding. Is this perhaps actually only for acrylics?

I've tried a few now, and no matter what I do, the wood grain raises up as the wood gets damp. That's to be expected, of course, but I figured the problem would go away as the grits continued getting smaller.

And it does, for a little while, but even going all the way down to 12000, the nice smooth wood gets fuzzy again after a short while. The only way I've found to save the pens is to let them dry and then start over with dry sanding. So the wet is doing nothing but wasting my time at the moment.

What am I missing? I'm sure this probably works great on acrylics, but do people do it with wood? If so, how do you get it to where the grain stops raising? And what is the advantage of it over dry sanding?

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Old 06-29-2018, 06:57 PM   #2 (permalink)
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I only wet sand on acrylics or after I have put CA on the wood.
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Old 06-29-2018, 07:09 PM   #3 (permalink)
 
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I did, what Monty does. Also, there are plenty of folks here that are delighted to answer any question. Enjoy your turning.
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Old 06-29-2018, 07:11 PM   #4 (permalink)
 
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As with Monty, I only "wet" sand with water on acrylics or similar - 2 hrs ago it was truestone/aluminum.

But... I do sand some wood blanks with walnut oil, linseed oil, etc... This is when I will usually leave a matte finish. There are many varieties available online.

It will be a matter of what you want the final appearance and feel to be.
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Old 06-29-2018, 07:33 PM   #5 (permalink)
 
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You can wet sand wood but not with water. You would use an oil like Boiled Linseed Oil (BLO) with the medium/finer grits to form a slurry to fill pores in the wood.

Warning! Warning Will Rogers! Spontaneous combustion can occur with sandpaper and rags with finishing oils on them so get them out of the shop and spread them to dry or submerge them in a bucket of water.
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Old 06-29-2018, 07:45 PM   #6 (permalink)
 
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If I am turning wood and plan on finishing with Danish oil or teak oil I sometimes wet sand with either Danish oil or teak oil. As to acrylics I use automatic transmission fluid for my wetting agent whne wet sanding.
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Old 06-29-2018, 07:46 PM   #7 (permalink)
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I rarely wet sand pen blanks. Some people do, some don't.

The professionals that don't - will have just as effective and beautiful of a finish as the professionals that do.

If it helps you, do it. However, a warning: in cooler weather such as around 75 and below, moisture in the wood can come to the surface under the finish (CA) and cause cloudiness. It does not always do that but it does it on occasion.
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Old 06-29-2018, 08:36 PM   #8 (permalink)
 
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Quote:
Originally Posted by Curly View Post
You can wet sand wood but not with water. You would use an oil like Boiled Linseed Oil (BLO) with the medium/finer grits to form a slurry to fill pores in the wood.

Warning! Warning Will Rogers! Spontaneous combustion can occur with sandpaper and rags with finishing oils on them so get them out of the shop and spread them to dry or submerge them in a bucket of water.
Sorry Old Man... Will Rogers was a tad before "Will Robinson"... (Yes, I know what you meant, and we are probably close in age!) But yup, the rags will still ignite!
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Old 06-29-2018, 08:56 PM   #9 (permalink)
 
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How did you get the CA to stick after you sanded to 12,000 ???
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Old 06-29-2018, 09:18 PM   #10 (permalink)
 
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Quote:
Originally Posted by mark james View Post
Sorry Old Man... Will Rogers was a tad before "Will Robinson"... (Yes, I know what you meant, and we are probably close in age!) But yup, the rags will still ignite!
I swear I typed Robinson when I was answering. Must have been that Smith guy that changed it after I proof read it. ;)
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