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Do Enamels "Yellow" over time..

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  • Member since
    November 2005
Do Enamels "Yellow" over time..
Posted by Anonymous on Sunday, October 2, 2005 9:06 AM
hey guys i had a talk with a long time and respected modeller from where i live and he told me to switch to acrylics because enamels tend to yellow after a time..(i think he was referring to years.)Sad [:(] he told me i just might get heartbroken if after some years my models yellow.. is this anyway true? because if it is..i might switch to acrylics especially for base coats. i really love my models and would like to have them looking like the original for life ..

P.S. when he means yellowing, does this count for all colors? or just the white and light colored ones? thanks
  • Member since
    November 2005
Posted by Anonymous on Sunday, October 2, 2005 5:28 PM
Some white enamels can yellow over time along with enamel clear gloss. Floquil reefer white won't yellow over time.
  • Member since
    February 2003
  • From: Southern California, USA
Posted by ABARNE on Monday, October 3, 2005 2:14 PM
QUOTE: Originally posted by luis_420925
P.S. when he means yellowing, does this count for all colors? or just the white and light colored ones? thanks


The effect, if present, would be most noticable on light colors. Even then it would probably be really noticable only on an unweathered white such as jetliner. I think that the stroarge of a model has something to do with it, i.e if you keep it out of direct sunlight it will lats better than if not.

I'm not sure how significant yellowing effects truly are. Testor's DullCoat has been accused numerous times of yellowing with age, and I have a couple of aircraft built over six years ago and heavily overcoated with DullCoat that show no signs of yellowing, even on the white areas of their insignias.
  • Member since
    May 2003
  • From: Central USA
Posted by qmiester on Tuesday, October 4, 2005 8:44 PM
The only one of my models I've noticed any yellowing with is a 1/72 P-47 I built in the early 80's. It's in a SWPA scheme with white leading edges and tail. The whites have definately yellowed but I think it's because of the dullcoat finish as the whites in the insignia have yellowed also. Haven't really noticed the problem on any of my other models though.
Quincy
  • Member since
    November 2005
Posted by Anonymous on Thursday, October 6, 2005 8:56 AM
thanks guys, i'll be really thinking of switching to acrylics teh more i find out about this.. but acrylics never yellow right? or it really depends on the topcoat?
  • Member since
    November 2005
Posted by Anonymous on Thursday, October 6, 2005 3:15 PM
check out the sticky on Futrure. it may help prevent this phenomenon. also, tamiya dull coat is better than testors and shouldn't yellow.

as i've learned the hard way, sunlight has a very bad effect on models too. that goodness for after-market decals (had i know of Future then, this woudln't have been problem).
  • Member since
    November 2005
Posted by Anonymous on Thursday, October 6, 2005 9:59 PM
Thanks springfinger. But i can't use future on enamel basecoats coz acrylics eat enamels. i can do the opposite,acrylic basecoat, then enamel topcoat..
abou sunlight, one time i tried to dry a laquer paintjob on sunlight.. when i came back after a few minutes it got tiny bubbles all over..
  • Member since
    November 2005
Posted by Anonymous on Friday, October 7, 2005 10:34 PM
Hi Luis, the problem seems to come from the materials the clear cote it is made, look a bottle of Dullcote or Glosscote that has been some time on the shelf and you notice it looks kind of yellow at the bottom, sometimes this affect the paints especially whites and greys. The discontinued Aeromaster after some time looked white (those were made by Floquil) so probably they were a safer bet, if you are after a gloss final cote try Future if not try with Floquil paints (always remember when you try a new transparent coat: let the base color enough time to cure and if possible do a little test)
  • Member since
    November 2005
Posted by Anonymous on Saturday, October 8, 2005 10:19 AM
Thanks clover, the main reason i want to switch to acrylics is so that i can use future more. i'm starting a thread to find out how many people use enamels or acrylics.. don't forget to vote at the general discussion.. thanks!
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