Official Luthiers Forum!

Solely owned and operated by Lance Kragenbrink
It is currently Sat Jan 20, 2018 2:28 am


All times are UTC - 5 hours


Forum rules


Be Nice to our new friends! Remember, everybody starts somewhere!




Post new topic Reply to topic  [ 4 posts ] 
Author Message
PostPosted: Fri Dec 08, 2017 5:41 pm 
Offline
Mahogany
Mahogany

Joined: Fri Feb 10, 2017 11:09 pm
Posts: 74
First name: Conor
Last Name: Searl
City: Duncan
State: British Columbia
Zip/Postal Code: V9L 2E5
Country: Canada
Status: Amateur
It's getting pretty cold around here, and so I'm hesitant to keep spraying in my garage. The instructions on the product say not to apply under 15 degrees celsius. Plus I don't like standing in the cold. So I've decided to try and finish a couple kits I have by brushing the lacquer on instead. I've heard people have good results thinning the product a little more than usual, I was wondering if there is anything else to take into consideration?

I've experimented with some color on the back of a tele, and it seems hard to get good even coverage...


Top
 Profile  
 
PostPosted: Fri Dec 08, 2017 6:54 pm 
Offline
Koa
Koa

Joined: Thu Nov 04, 2010 1:46 pm
Posts: 963
First name: Freeman
Last Name: Keller
Focus: Build
Status: Amateur
There was an article in American Lutherie a while back about brushing waterborn lacquer (specifically KTM-9) but I don't think it said anything about temperature. The author got good luck but as I remember, he had to do a lot of leveling to get the brush strokes out. KTM-9 is one of my two favorite finishes (nitro the other), I will frequently reduce it with denatured alcohol when its cold or I want better flow. Another trick with KTm-9 (and I assume others) is that when I finish I wash out my gun with warm water, then put some alcohol in it and shot it thru the nozzle - water is soluble in DA and it will keep parts from corroding. I leave a little DA in the cup and when I'm ready to spray the next day I shoot a mist of DA, then fill the cup with KTM-9 and start my spraying. The DA seems to make the surface slightly tacky and since I've been doing that I haven't had any witness lines when I sand.

Another thing you might try is warm the lacquer in warm water and put a heat lamp on the guitar.



These users thanked the author Freeman for the post: Conor_Searl (Fri Dec 08, 2017 7:32 pm)
Top
 Profile  
 
PostPosted: Fri Dec 08, 2017 7:37 pm 
Offline
Mahogany
Mahogany

Joined: Fri Feb 10, 2017 11:09 pm
Posts: 74
First name: Conor
Last Name: Searl
City: Duncan
State: British Columbia
Zip/Postal Code: V9L 2E5
Country: Canada
Status: Amateur
Thanks Freeman, I thinned this Brite-tone lacquer quite a bit with reducer, and my test piece levelled itself out quite nicely as it dried. Not much in the way of brush strokes, but I'm having a heck of a time getting the color to cover evenly. But I'm wondering if that has more to do with how much colored pigment I've added, as I have the same problem when I spray, I only get good color coverage when I spray a very heavy wet coat. But the mixed lacquer looks nice and opaque before it goes into the gun or onto the brush...


Top
 Profile  
 
PostPosted: Fri Dec 08, 2017 9:59 pm 
Offline
Koa
Koa

Joined: Thu Nov 04, 2010 1:46 pm
Posts: 963
First name: Freeman
Last Name: Keller
Focus: Build
Status: Amateur
Sorry, can't help with the color thing. I have only done clear and tinted lacquer, I save the solid colors for my motor cycle painting friend.


Top
 Profile  
 
Display posts from previous:  Sort by  
Post new topic Reply to topic  [ 4 posts ] 

All times are UTC - 5 hours


Who is online

Users browsing this forum: No registered users and 3 guests


You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot post attachments in this forum

Jump to:  
Powered by phpBB® Forum Software © phpBB Group
phpBB customization services by 2by2host.com