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PostPosted: Thu May 07, 2020 12:08 pm 
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Mahogany
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Joined: Thu Feb 15, 2018 11:06 am
Posts: 95
First name: Roy L
Last Name: Smith
City: Apache Junction
State: Az
Zip/Postal Code: 85119
Country: USA
Focus: Repair
Status: Amateur
Not really sure what the humidity level is; I have a few meters, one in the kitchen says 24%, but the ones in the room where I keep a humidifier and my guitars just reads Er when it gets below 20%, and that's what they are saying now. The one in the workshop is broken, methnks. It's showing under 10%, but it's an analog meter and I don't really remember if it was working before.

I'm spraying the same Cardinal lacquer I used on two previous guitars with no problems (out in the shop where I have no humidity control) using the same HF touchup sprayer I've been using, always take it apart and clean after each day's spray, and spray cleaning lacquer thru it after each coat. The pattern looks fine to me in test sprays, seems to cover well with the overlaps. But it's drying quite rough; enough so that I'm having to sand with 320 after each day's spray. Seems to look and feel ok after the sanding, but I've never had to do that before.

Could the low humidity level be causing a problem like that? I'm using the Cardinal thinner at about 20%, which is what I've done before. I was thinking I might spread a little water on the floor before the next spray just to see if it acts more like I remember. Next post might say that I slipped and broke my wrist or something; mebbe I won't do that.

Appreciate any suggestions.

Roy in Az



These users thanked the author flemsmith for the post: Bri (Sat May 09, 2020 11:05 am)
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PostPosted: Thu May 07, 2020 12:40 pm 
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Mahogany
Mahogany

Joined: Thu Feb 15, 2018 11:06 am
Posts: 95
First name: Roy L
Last Name: Smith
City: Apache Junction
State: Az
Zip/Postal Code: 85119
Country: USA
Focus: Repair
Status: Amateur
Googling makes it seem like I need to confine my spraying to the early morning hours when it's cooler. Temperatures lately are getting above 100, but morning's are somewhere between 70 and 80ish. I'll try that and report back. Will slow me down, but that really doesn't matter. roy


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PostPosted: Thu May 07, 2020 1:32 pm 
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Joined: Sun Mar 06, 2011 12:04 am
Posts: 4339
First name: Chris
Last Name: Pile
City: Wichita
State: Kansas
Country: Good old US of A
Focus: Repair
Status: Professional
Add a little retarder so it won't dry as fast.

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PostPosted: Thu May 07, 2020 2:55 pm 
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Brazilian Rosewood
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Joined: Fri Aug 19, 2005 4:02 am
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Location: The Woodlands, Texas
First name: Barry
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Yep, retarder should do the trick. The lacquer is probably drying before it can amalgamate.


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PostPosted: Thu May 07, 2020 11:55 pm 
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Mahogany
Mahogany

Joined: Thu Feb 15, 2018 11:06 am
Posts: 95
First name: Roy L
Last Name: Smith
City: Apache Junction
State: Az
Zip/Postal Code: 85119
Country: USA
Focus: Repair
Status: Amateur
Retarder....never bought any. Does it need to be the same brand? Thanks for the inputs, I'll start looking for some.

roy


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PostPosted: Fri May 08, 2020 8:13 am 
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First name: Chris
Last Name: Pile
City: Wichita
State: Kansas
Country: Good old US of A
Focus: Repair
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All I ever bought was DuPont because that's what my local automotive paint store carried.

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PostPosted: Fri May 08, 2020 9:53 am 
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Brazilian Rosewood
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Joined: Fri Aug 19, 2005 4:02 am
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Location: The Woodlands, Texas
First name: Barry
Last Name: Daniels
I don't believe Cardinal makes a retarder.


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PostPosted: Fri May 08, 2020 10:07 am 
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Probably doesn't matter, Roy - but I'd contact whoever makes your lacquer and get their recommendation.

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"Act your age, not your shoe size" - Prince


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PostPosted: Sun May 10, 2020 2:56 pm 
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Mahogany
Mahogany

Joined: Thu Feb 15, 2018 11:06 am
Posts: 95
First name: Roy L
Last Name: Smith
City: Apache Junction
State: Az
Zip/Postal Code: 85119
Country: USA
Focus: Repair
Status: Amateur
As per my normal, I didn't call anybody, just ordered what they had at LMI, figuring if they sold Cardinal, whatever retarder they sell should work with it. Not here yet, and I decided to just wait for the retarder rather than hope things are better in the mornings. I'll post again after I get it and spend a day spraying. I do appreciate the inputs. Even if I don't always follow direction so good. roy


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PostPosted: Mon May 11, 2020 11:29 am 
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Mahogany
Mahogany

Joined: Thu Feb 15, 2018 11:06 am
Posts: 95
First name: Roy L
Last Name: Smith
City: Apache Junction
State: Az
Zip/Postal Code: 85119
Country: USA
Focus: Repair
Status: Amateur
Success! Much better texture an hour after the first spray with retarder. I did start earlier in the morning too, think I'll stop for the day before noon; shouldn't be much above 90(ish) by then. I bought LMI's McFadden retarder, it's labelled for gloss lacquer, didn't even know you needed to match the lacquer to the type of finish you're trying to get. I really know little or nothing about retarder, but using mebbe 5% or so, there's no roughness in the surface at all now. Thanks, I appreciate being able to ask beginner questions and get experienced answers. Now that I have it, I'll google a bit and see what else I can learn about retarders. When you're just starting out you make mistakes..it's nice to get help that lets you correct them. Makes you feel like that second guitar should come out much better than the first. roy


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PostPosted: Mon May 11, 2020 6:30 pm 
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Mahogany
Mahogany

Joined: Thu Feb 15, 2018 11:06 am
Posts: 95
First name: Roy L
Last Name: Smith
City: Apache Junction
State: Az
Zip/Postal Code: 85119
Country: USA
Focus: Repair
Status: Amateur
great, ran out of nitro. After the 10th coat, but the first 7 had the drying problem. So I ordered more, kinda toying with the idea of letting this dry for about a week and see how it does leveling before I spray any more. I figure if it's hard to get rid of all the shiny spots, then I obviously need more, but if it seems to level ok, mebbe I'm thru spraying....does that make sense? So far I'm not so certain about the finishing process; came out great once, middling the second time, this is the third. roy


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PostPosted: Mon May 11, 2020 8:29 pm 
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Joined: Sun Mar 06, 2011 12:04 am
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First name: Chris
Last Name: Pile
City: Wichita
State: Kansas
Country: Good old US of A
Focus: Repair
Status: Professional
It took me awhile to get it, too. You know what they say about practice....

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"Act your age, not your shoe size" - Prince


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