[Milsurplus] Milsurplus--- wrinkle paint

[J. Forster]

The air was probably changed often to keep the solvent vapors below the
Lower Explosive Limit.

FWIW,

-John

=========================



> Bruce Gentry wrote:
>> Larry Snyder wrote:
>>> I've gotta believe that the 500W halogen construction lights would
>>> do a decent job cooking it once the appropriate distance was found.
>>> -ls-
>>>
>>>
>>> "Todd, KA1KAQ" <ka1kaq at gmail.com> wrote:
>>>
>>>> On Wed, Aug 4, 2010 at 8:03 PM, AI4WM Bill <ai4wm at yahoo.com> wrote:
>>>>
>>>>
>>>>> The heat gun was faster, but not as nice even texture of wrinkles
>>>>> as the oven.
>>>>>
>>>>> The oven took longer, but the quality of the finish was much more
>>>>> consistent and nicer.
>>>>>
>>>> The former can happen when uneven layers are applied, Bill. But I've
>>>> always wondered if the oven approach doesn't perhaps allow the paint
>>>> layers to 'flow' somewhat before they set up, evening things out. I've
>>>> experienced the exact same results as you expressed here (my heat gun
>>>> was a 1500 watt hair blow dryer).
>>>>
>>>> And I have a RAO-7 cabinet painted with VHT paint back in the late
>>>> 70s/early 80s that wasn't baked and is still a bit tacky.
>>>>
>>>> ~ Todd,  KA1KAQ/4
>>>>
>>>>
>> In the late 1980's I was working in the old Smith -Corona Typewriter
>> plant here in Syracuse. The paint drying ovens were still intact
>> because they were on the top floor and too difficult to remove when
>> the building was converted to a community collage.  They were steam
>> heated, probably with superheated steam en route to other processes or
>> the  steam engine generator that supplied much of the power. The heat
>> was certainly even and well regulated. One thing all this brought to
>> mind is the air in the oven was changed fairly frequently and not
>> mixed with combustion gasses from a gas burner. I wonder if the drying
>> of the paint was improved by hot, fresh, oxygen-rich air in the oven,
>> as opposed to air loaded with paint fumes or combustion products.
>> Whatever the answer is, the finishes on a lot of older equipments
>> were made with a great deal of energy expended and pollution
>> produced.   Bruce Gentry
>>
>
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