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FDP Forum / Guitar Mods, Repairs, and Projects / Ugh. Witness line on a guitar headstock. HELP!!!

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Peegoo
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The rain sounds like

a round of applause
Jul 30th, 2017 09:30 PM   Edit   Profile   Print Topic   Search Topic

The n-butyl acetate component is what gives nitrocellulose lacquer that sweet 'banana-like' smell.

drksd4848

USA

Jul 31st, 2017 10:11 AM   Edit   Profile   Print Topic   Search Topic

I suppose it would be a bad idea to use it as air freshener.

BTW Peegoo, Mohawk or Minwax... which one would you go with? I have them both.

Peegoo
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Jul 31st, 2017 04:43 PM   Edit   Profile   Print Topic   Search Topic

The Minwax is 3.68% cellulose nitrate.

The Mohawk is 1.0-2.5% cellulose nitrate.


You'll get a faster build (that is what you want) with the Minwax because it has a higher percentage of solids than the Mohawk.

Mohawk lacquer (Gloss 80) SDS here.

drksd4848

USA

Jul 31st, 2017 09:00 PM   Edit   Profile   Print Topic   Search Topic

I just sprayed my third coat of Minwax. It smells heavenly...

But, I'll tell ya, a couple of sniffs and that stuff will send you to Planet Zippy in no time.

Total aside: I remember as a kid I use to love the smell of Lacquer and leaded gasoline. Probably two of the worst things you could possibly breath. I suppose that would explain a lot



Peegoo
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Aug 1st, 2017 08:10 PM   Edit   Profile   Print Topic   Search Topic

Same here. I'll probably die early because of fumes...

drksd4848

USA

Aug 3rd, 2017 09:32 PM   Edit   Profile   Print Topic   Search Topic

I've added coats of lacquer, sanded down, added three more coats. I would think that all the old finish was removed, but when I spray on the new finish I wind up with a layer line between the nut and the A string tuner hole

Now, check this out:

I've got what appears to be some sort of bevel and/or rounding at the edge of the headstock.

It looks worse in real life.

Are you sure using lacquer thinner on the face of the headstock to remove the finish is a bad idea?

There are certain spots I just can't seem get the old finish off, and then parts where I basically round off the edge. Ugh.

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(This message was last edited by drksd4848 at 11:34 PM, Aug 3rd, 2017)

twangdoodles

michigan usa

Aug 4th, 2017 05:27 AM   Edit   Profile   Print Topic   Search Topic

Are you using a sanding block? If not, you should be but even if you are it's pretty easy to round the edges like that if you aren't careful. Sanding is both the easiest and hardest job in woodworking. It's boring and tedious and our minds tend to wander.

When I'm removing finish I start with 180 or even 150 grit. These take the finish off quicker but the key is to pay attention and be careful.

What you have there isn't too bad. You can fix it but it means that you'll have to sand the whole face down to do it. Pretty easy but for the radiused area near the nut which will take some careful work to keep it looking good.

drksd4848

USA

Aug 4th, 2017 08:35 AM   Edit   Profile   Print Topic   Search Topic

@$$%$##!!!

To be honest, I've used it.... at times. But there was this really stubborn piece of finish that would not come off. It was by that section in the picture, so I would switch off to hand sanding to try to remove it.

Now, the old finish is still there and we have the rounding at the edge.

I know Peegoo warned against it, but I'm so tempted to say F it and use Lacquer thinner. As of right now, I'm trying to use sanding sealer to at least cover it.

I will say that at some point with this, I let the "perfect" get in the way of the "good". The decal seemed reasonably level at one point, but I couldn't settle for reasonable. Ugh.

In reality, I should have stopped, bolted it on to the body, and started playing the damn thing.

Peegoo
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Aug 4th, 2017 08:41 PM   Edit   Profile   Print Topic   Search Topic

Hmmm that round edge means your coats are a bit too thick. That's what causes that 'bubble' effect around the edges near corners.

Let it sit for two weeks or so to gas off and see if it levels out.

drksd4848

USA

Aug 13th, 2017 08:30 AM   Edit   Profile   Print Topic   Search Topic

OK, so here is where this is at... after about a week.

You can see in the pic there is a slight line near the back of the headstock (nut side) where either to much finish was left on, or too much was taken off.

I *think* it's starting to look better... but there is a lot of orange peel. Would it be OK to wet sand it, and if so, with what grit? Or should I continue to leave it alone?

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Peegoo
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Aug 13th, 2017 09:24 AM   Edit   Profile   Print Topic   Search Topic

Looking good!

Block sand it with 600-grit paper and low-odor mineral spirits. Don't use water unless you're very sparing with it (a few drops).

Use a block at least 1.5" square, and don't press hard. Let the grit do the work. Keep the paper and lacquer surface wiped off with a paper towel as you go, to keep the grit cutting cleanly.

Wrap the paper around a finger for the curved area behind the headstock, and take care not to sand the lacquer off the corners.

There is no fast way to do this stuff and get a great result.

You are getting there!

drksd4848

USA

Aug 13th, 2017 06:50 PM   Edit   Profile   Print Topic   Search Topic

Peegoo... you are da bestest.

Now, question: At what point do you think I could reapply the the Headstock decal?


Peegoo
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The rain sounds like

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Aug 13th, 2017 07:16 PM   Edit   Profile   Print Topic   Search Topic

After the first wet-sand.

Mick Reid
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Australia

American-made in Oz!!
Aug 14th, 2017 12:56 AM   Edit   Profile   Print Topic   Search Topic

That's looking much better drksd.

Be sure to show us when you have it finished!

Te 52

Laws of Physics

strictly enforced
Aug 14th, 2017 01:27 PM   Edit   Profile   Print Topic   Search Topic

An old 9 volt battery makes an excellent miniature sanding block for jobs like this. The rounded edges keep it from digging in.

Peegoo
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The rain sounds like

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Aug 14th, 2017 02:24 PM   Edit   Profile   Print Topic   Search Topic

A pink pencil eraser also works great for this stuff.

One of these.

drksd4848

USA

Aug 14th, 2017 08:30 PM   Edit   Profile   Print Topic   Search Topic

600 grit + sanding block + mineral spirits = I think it made it look worse.

You can see the line around the front of the headstock, plus you can see the various shades of maple around the headstock as a whole...

OK, so do I hit it with a another coat of lacquer? Do I try to strip it and start over?

Uh... I dunno about this

Peegoo
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The rain sounds like

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Aug 14th, 2017 08:34 PM   Edit   Profile   Print Topic   Search Topic

Is the clearcoat getting a milky appearance around the edges? Or is that a reflection?

Something wacky going on there. The color should all be pretty uniform.

drksd4848

USA

Aug 14th, 2017 09:47 PM   Edit   Profile   Print Topic   Search Topic

Nope... milky appearance. Might have been a result of me over-sanding it at one point...

drksd4848

USA

Aug 15th, 2017 09:27 AM   Edit   Profile   Print Topic   Search Topic

Guys:

Do you think I should just go with a stripper and start over. (I can get a lap dance for just $50! HA! Sorry, couldn't help myself)

Anyway... I have 3M safe stripper, and I'm figuring if I just carefully blow out what is already on the headstock, I can get a uniform finish on the front with no layer lines.

As you can kind of see, there were still stubborn bits of the old finish I couldn't get off...

Although, part of me is on the brink of throwing in the towel and giving it to someone else to finish... Trying to resist though.

(This message was last edited by drksd4848 at 11:28 AM, Aug 15th, 2017)

Previous 20 Messages  

FDP Forum / Guitar Mods, Repairs, and Projects / Ugh. Witness line on a guitar headstock. HELP!!!




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