[ARC5] [Milsurplus] Cleaning fine crackle paint

[Richard Knoppow]

     I did a little research on this.  I believe that the first wrinkle 
paint was made by a company with a name like Art Finishes (doesn't look 
right) and was applied in two layers.  There is another finish called 
"crackle" which is the finish General Radio used for many years.  It 
looks like dried mud.  This was also a two coat process where the under 
coat was allowed to shrink.   It was an expensive process and not too 
widely used.  It was also used on the Hallicrafters SX-28 and maybe some 
other H equipment.
      Some years ago I refinished some cabinets with Krylon spray 
wrinkle black. I found both application temperature and thickness 
critical.  I got pretty good results by air drying for half an hour or 
so and then oven drying at about 150F for an hour or more.  I think the 
rate of drying affects the texture of the wrinkles, hotter gives coarser 
wrinkles.    I have yet to find formulas for anything like the original 
paint but know I've seen it in print somewhere.

On 4/17/2015 10:05 AM, gordon white wrote:
> You know that the black wrinkle paint changed over time, especially at 
> first at Aircraft Radio Corporation. I have seen the lab prototype 
> Type K equipment, which had painr with very tiny wrinkles. The ARA/ATA 
> and SCR-274N gear had slightly different wrinkle and the AN/ARC-5 
> slightly larger wrinkled paint that when new was more shiny than the 
> Type K or ARA/ATA
>
>  - and I doubt the difference was just in the age.
>
>  - Gordon White
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-- 
Richard Knoppow
1oldlens1 at ix.netcom.com
WB6KBL