tru oil on neck - rough spot!!

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tru oil on neck - rough spot!!

Postby Jean-Philippe regnard » Wed Sep 04, 2019 10:43 pm

Hi,
I'm finishing with tru oil an unfinished maple neck and after two coat i find a rough spot, just at the base of the headstock (rear side of the neck).
I will feel it when i'll play, it's pretty sure.
Before to apply tru oil, i sanded all the neck with 400 grit but i'm affraid that i didn't do it well at the place where i feel the roug spot.
What i'm supposed to do? should I sand everything and start again or with sanding and tru oil I can retrace this error.
Thank you for your answers and your help.
Jean-Philippe regnard
 
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Re: tru oil on neck - rough spot!!

Postby Barry Daniels » Thu Sep 05, 2019 10:24 am

Sand and reapply. Two coats is not near enough.
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Re: tru oil on neck - rough spot!!

Postby Mark Wybierala » Thu Sep 05, 2019 6:24 pm

Check it out under a good light and find out why it feel rough. With only just two coats of Tru oil, you shouldn’t have a problem just addressing the offending spot.
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Re: tru oil on neck - rough spot!!

Postby Carl Dickinson » Thu Sep 05, 2019 9:16 pm

And keep applying the tru-oil. I stopped at 10 coats on the last one including sanding on some problem spots where courser sanding showed up (at about 2 coats). I liked the results.
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Re: tru oil on neck - rough spot!!

Postby Jean-Philippe regnard » Thu Sep 05, 2019 9:33 pm

hi,
I just went through a shot of steel wool 0000 and the sensation of roughness is gone.
It may have finally happened when I wiped out the excess of tru oil during the last coat.
Otherwise, I reassure everyone, I did not have the intension to stop at 2 layers. At least 4. I will evaluate at this moment.
Thanks everyone for your advices.
Jean-Philippe regnard
 
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Re: tru oil on neck - rough spot!!

Postby Barry Daniels » Fri Sep 06, 2019 11:18 am

Jean, Tru-Oil is a different kind of finish. Less than 10 coats is more of an oil-rubbed surface where you get little build on the surface. If you want a surface build and any kind of sheen you will probably have to build up more than 10 coats, depending on the porosity of the wood.
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Re: tru oil on neck - rough spot!!

Postby David King » Sat Sep 07, 2019 8:22 pm

Just for future reference. Always dampen the neck or any wood you intend to finish after your "final" sanding as you will discover how much you missed when the grain is raised and dried again. I do this two or three times to really make sure all the grain is out because it will just raise under your finish later on if you don't, especially under an oil finish that can't begin to block moisture. It takes 30 coats of linseed oil (think tru-oil) to get the same moisture resistance as a single coat of polyurethane varnish. It take three coats of polyurethane to block moisture completely once the grain is filled.
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Re: tru oil on neck - rough spot!!

Postby Bob Francis » Sun Sep 08, 2019 11:01 am

David King wrote:Just for future reference. Always dampen the neck or any wood you intend to finish after your "final" sanding as you will discover how much you missed when the grain is raised and dried again. I do this two or three times to really make sure all the grain is out because it will just raise under your finish later on if you don't, especially under an oil finish that can't begin to block moisture. It takes 30 coats of linseed oil (think tru-oil) to get the same moisture resistance as a single coat of polyurethane varnish. It take three coats of polyurethane to block moisture completely once the grain is filled.

Nice tip!
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