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| Flattening paste and nitro - mix ratio? http://www.luthiersforum.com/forum/viewtopic.php?f=10101&t=29081 |
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| Author: | Josh H [ Wed Sep 15, 2010 8:12 am ] |
| Post subject: | Flattening paste and nitro - mix ratio? |
I've got some gloss Nitro I'd like to flatten for necks. Can anyone tell me how much flattening paste I want to add? I'm looking for the result to be a satin finish, or close to satin. Thanks Josh |
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| Author: | David LaPlante [ Wed Sep 15, 2010 8:50 am ] |
| Post subject: | Re: Flattening paste and nitro - mix ratio? |
Here are the volume ratios from an old Sherwin Williams manual: Lacquer % Flatting Agent % 100 / 0 High Gloss 97 / 3 Bright Rubbed Effect 95 / 5 Medium Rubbed Effect 92 / 8 Dull Rubbed Effect I've routinely used the 95/5 mixture to get the degree of semi gloss one would find on an old Martin neck from the 1960s. Of course your materials may be different so you should experiment to get the results you want. |
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| Author: | Josh H [ Wed Sep 15, 2010 9:20 am ] |
| Post subject: | Re: Flattening paste and nitro - mix ratio? |
Thanks David, Your info was helpful. I read another data sheet that said the paste should not exceed 15% of the mixture. So based on what you have told me I think I'll start by experimenting with mixing no higher than 10% paste. Josh |
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| Author: | ChuckG [ Tue Sep 21, 2010 10:04 am ] |
| Post subject: | Re: Flattening paste and nitro - mix ratio? |
I simply use the gloss and when I'm rubbing it out, stop at the appropriate sandpaper grit. For gloss I start with 800, then 1000, 1200, 1500, and then 2000 Abralon pads before going to the buffing wheel. I get a nice satin if I stop at 1000 or 1200. Semi-gloss after the Abralon pad. Try it and see what you think. Chuck |
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| Author: | Josh H [ Tue Sep 21, 2010 11:50 am ] |
| Post subject: | Re: Flattening paste and nitro - mix ratio? |
Hi Chuck, I have tried that in the past, it works ok. But what I found with that method is that overtime with playing the finish becomes glossy again from the player's hand moving back and forth over the finish. I've also experienced this with some premixed satin lacquer I have tried. I'm hoping that this new mix of my own will hold it's satin feel even after it gets played in. Josh |
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| Author: | TonyKarol [ Tue Sep 21, 2010 2:16 pm ] |
| Post subject: | Re: Flattening paste and nitro - mix ratio? |
Dont count on it Josh ... since you are using gloss as the base (which pretty much all satin is), eventually it gets shiny ... I have been using 'dull' lacquer for necks on a few, and its good, but if you 1200 it and buff .. its shiny. nature of the beast ... |
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| Author: | Josh H [ Wed Sep 22, 2010 7:27 am ] |
| Post subject: | Re: Flattening paste and nitro - mix ratio? |
I wondered if that might be the case. Oh well, I guess the customer can always restore the satin feel if they wish with some steel wool or fine sandpaper. |
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