Zinc Rot or Bad Paint Application? - DA.C
 

Go Back   DA.C > Ground Control > 1:500 Scale Model Aircraft

Reply
 
LinkBack Thread Tools Rate Thread
Old 03-23-2020, 05:23 AM   #1 (permalink)
Junior Collector
 
VHHH777's Avatar
 
Join Date: Dec 2019
Location: HKG
Posts: 2
Default

Hi guys, first post for me here. I opened up some models for the first time in a while and noticed some small bubbles on the models. I'm not much of an expert when it comes to this. Would anyone be able to tell me if they look more like zinc rot or just a bad paint application?

Thanks.
Attached Thumbnails
Zinc Rot or Bad Paint Application?-b-lad_1584955218718.jpg   Zinc Rot or Bad Paint Application?-vr-hok_1584955235475.jpg   Zinc Rot or Bad Paint Application?-g-byao_1584955267408.jpg  

Last edited by VHHH777; 03-23-2020 at 05:31 AM.
VHHH777 is offline   Reply With Quote
Sponsored Links
Advertisement
 
Old 03-23-2020, 06:14 AM   #2 (permalink)
Master Collector
 
modelmanGB's Avatar
 
Join Date: Jun 2001
Location: United Kingdom
Posts: 818
Default Re: Zinc Rot or Bad Paint Application?

Try gently rubbing the affected area: if it flakes off it’s most likely to be zinc rot. Paint bubbles are likely to stay in place.
__________________
MLC
modelmanGB is offline   Reply With Quote
Old 03-23-2020, 06:29 AM   #3 (permalink)
Junior Collector
 
VHHH777's Avatar
 
Join Date: Dec 2019
Location: HKG
Posts: 2
Default

Thanks for replying. So its not flaking off. If they are paint bubbles, can they tend to spread or get worse with time especially if they are displayed and get some sunlight (not too much or direct)? I do try to rotate with other models every few days.
VHHH777 is offline   Reply With Quote
 
Old 03-23-2020, 10:06 AM   #4 (permalink)
Collector
 
Join Date: Oct 2001
Posts: 2,802
Default Re: Zinc Rot or Bad Paint Application?

It is poor paint prep in my opinion! Looks like debris left on the plane prior to painting. Paint will also bubble if there is oils left on the surface as it can't adhere.
jcahea is offline   Reply With Quote
Old 03-23-2020, 05:07 PM   #5 (permalink)
Banned
 
Join Date: Mar 2020
Posts: 4
Default Re: Zinc Rot or Bad Paint Application?

Nice
Khana21 is offline   Reply With Quote
Old 03-25-2020, 09:45 PM   #6 (permalink)
Bite Me
 
gospodin's Avatar
 
Join Date: Sep 2006
Location: SHV
Posts: 8,777
Default Re: Zinc Rot or Bad Paint Application?

Gotta remember that zinc rot is caused by contaminants in the alloy creating a chemical reaction that debonds the metal, and depending how bad the contamination is will determine the extent of the damage. Nothing you can do about it, no amount of storage in cool temps or wiping down your model will change that. The "measles" on your model is probably some minor reaction, I've had a few car models that have done that and if I sanded them down or removed the paint, the metal was pimply, not the paint.
__________________

To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.
Steve







Sometimes I wonder if the world is being run by smart people who are putting us on, or imbeciles who really mean it. Mark Twain
gospodin is offline   Reply With Quote
Reply

Thread Tools
Rate This Thread
Rate This Thread:

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is On
Trackbacks are Off
Pingbacks are Off
Refbacks are On



All times are GMT -4. The time now is 08:56 AM.

Latest Threads
- by dylan
 

Models of the Week
 



Powered by vBulletin®
Copyright ©2000 - 2020, Jelsoft Enterprises Ltd.
SEO by vBSEO 3.6.1
vBulletin Security provided by vBSecurity v2.2.2 (Pro) - vBulletin Mods & Addons Copyright © 2020 DragonByte Technologies Ltd.