Quoting Thomas Olsen <tmolsen@...>:
In regard to Mal's reference to Scalecoat painted engines from 30 yearssnip
So, it is just a matter of watching what you are doing and taking care
As I have noted several times before on this list, I have used
Scalecoat in much the same way Mal & Tom have described since 1968.
The one thing Tom has described that I do NOT do is use Floquil zinc
chromate primer for ANYTHING! My complete dissatisfaction with that
wholly unnecessary material is what prompted my discovery of Scalecoat
as a far better method back in 1968 to begin with. Fellow listee Andy
Miller had instructed me on how to paint brass models the "Floquil way".
A new Gem CPR class D-4g 4-6-0 was prepared, primed with the detail hiding
Floquil zinc chromate primer and then painted, also with Floquil. While
Andy and others said the resiults were fine, I was far from satisfied. The
floquil paint of the day had enough of a tendency to hide detail on its own.
I suspect much of this was due to a pigment not ground fine enough but other
may have other ideas about that. But if coarse pigment in the paint itself
were not bad enough the zinc chromate primer was the kiss of death. I still
have the CPR D-4g as well as another painted the "right way", with Scalecoat.
The two are used to show why I have never used Floquil for anything but
weathering since. Weathering can be done with a number of colors and the
fact that the pigment may be more coarse doesn't matter unless one goes
overboard as another way to hide detail is with over-weathering.
This said, I will admit to having avoided Floquil products for years,
accept as noted. Thus their zinc chromate primer may have "improved" in
the interim. But the question must be raised as to why anyone would use
a product such as the zinc chromate primer with another product like
Scalecoat that was specifically designed to be used WITHOUT the awful
primer? I would also suggest keeping oven temperature used to bake
Scalecoat to a MAXIMUM of 150 degrees and, again, with three hours
minimum for the first coat and one hour for each additional coat. That
is all that is needed so why risk more? And if it makes you feel any
better, Tom, I, too, have created a brass "kit" from overheating an oven.
This was with a Trains, Inc. brass GN express reefer back in 1972. The
oven was a gas one with a questionable temperature control. That problem
was cured by never using anything but an electric oven since!
Enough said, Don Valentine