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Re: Construction Log for KMG J45-Style Dreadnought

Posted: Sat May 11, 2013 9:32 am
by TonyinNYC
Looking good! Is this your first time with Z-Poxy? How do you like it? I really like using it.

Re: Construction Log for KMG J45-Style Dreadnought

Posted: Sat May 11, 2013 7:06 pm
by dave d
I've used Zpoxy once before, on my first guitar with the rosewood back and sides. I like it, although I haven't tried anything else to be honest. Nevertheless it does the trick for me and I'll stick with it.

Re: Construction Log for KMG J45-Style Dreadnought

Posted: Sat May 11, 2013 7:26 pm
by dave d
Ready to start to spray the Deft rattle-can lacquer.
Back: Zpoxy done, ready for lacquer.
Back: Zpoxy done, ready for lacquer.
DBD_8087.JPG (73.77 KiB) Viewed 488 times
Sides: Zpoxy done, ready for lacquer.
Sides: Zpoxy done, ready for lacquer.
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Top: Zpoxy done, ready for lacquer.
Top: Zpoxy done, ready for lacquer.
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First coat of lacquer.
First coat of lacquer.
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DBD_8094.JPG
DBD_8094.JPG (52.14 KiB) Viewed 488 times
Picture taken after a couple of coats. Up close you can see all the dimples and wrinkly bits.  And a few scratches show up, so they'll need to be sanded out when the level-sanding is done.
Picture taken after a couple of coats. Up close you can see all the dimples and wrinkly bits. And a few scratches show up, so they'll need to be sanded out when the level-sanding is done.
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I sand this until most of the shiny stuff is gone. You sand all the high spots spray again, repeat, and eventually build up a sufficient coat.
I sand this until most of the shiny stuff is gone. You sand all the high spots spray again, repeat, and eventually build up a sufficient coat.
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DBD_8109.JPG
DBD_8109.JPG (68.22 KiB) Viewed 488 times
Ready for another coat.  I found that subsequent coats go on smoother each time, so there's less texture that needs to be leveled as you progress.
Ready for another coat. I found that subsequent coats go on smoother each time, so there's less texture that needs to be leveled as you progress.
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It may not be shiny now, but it's definitely getting "sheeny".
It may not be shiny now, but it's definitely getting "sheeny".
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Re: Construction Log for KMG J45-Style Dreadnought

Posted: Sat May 11, 2013 7:45 pm
by dave d
Final coats of lacquer put on before letting it cure.
DBD_8131.JPG
DBD_8131.JPG (57.43 KiB) Viewed 487 times
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DBD_8133.JPG (60.72 KiB) Viewed 487 times
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DBD_8142.JPG (69.05 KiB) Viewed 487 times
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DBD_8154.JPG (51.64 KiB) Viewed 487 times
While the lacquer on the body is curing it gives me a chance to dress the frets.
While the lacquer on the body is curing it gives me a chance to dress the frets.
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DBD_8158.JPG
DBD_8158.JPG (92.37 KiB) Viewed 487 times

Re: Construction Log for KMG J45-Style Dreadnought

Posted: Sat May 11, 2013 7:59 pm
by dave d
Final sanding and polishing after letting it cure for at least a week to 10 days.
Starts out shiny, but wet sanding with 800 w/d sandpaper makes it dull again.  That will change...
Starts out shiny, but wet sanding with 800 w/d sandpaper makes it dull again. That will change...
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getting a bit of sheen...
getting a bit of sheen...
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and a little sheenier as you move up through the sanding grits... (ignore that piece of 320. I only used 800 or higher at this stage)
and a little sheenier as you move up through the sanding grits... (ignore that piece of 320. I only used 800 or higher at this stage)
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DBD_8169.JPG
DBD_8169.JPG (98.22 KiB) Viewed 487 times
DBD_8171.JPG
DBD_8171.JPG (101.07 KiB) Viewed 487 times
after using a polishing compound
after using a polishing compound
DBD_8172.JPG (99.58 KiB) Viewed 487 times
A fairly good reflective surface
A fairly good reflective surface
DBD_8173.JPG (89.11 KiB) Viewed 487 times

Re: Construction Log for KMG J45-Style Dreadnought

Posted: Sun May 12, 2013 12:55 pm
by TonyinNYC
That's a pretty decent finish. I would give it higher marks, but I can't read the writing on the light bulb!
What grit did you sand up to?

Re: Construction Log for KMG J45-Style Dreadnought

Posted: Sun May 12, 2013 1:58 pm
by dave d
TonyinNYC wrote:That's a pretty decent finish. I would give it higher marks, but I can't read the writing on the light bulb!
What grit did you sand up to?

I'm sure I have a photo here somewhere where you can read the wattage on the bulb in the reflection :)

I went up to 2000 grit. Overkill perhaps, if using the rubbing compound?

One my last guitar I used micromesh. On this one I did not, as I wanted to see what was achievable with the grades of w/d and the polishing compound.