Re: Painting brass
Many years ago I learned a hard lesson about baking brass models. In conjunction with that lesson I also got to learn how to re-assemble some brass models. After that I still used Mrs. Switzer's oven, but I went about it differently. I now use the following steps:
1. preheat the oven to 150 degrees (I'm not disagreeing with 185 degrees)
2. when the light indicates the oven is at 150 degrees (pre-heat completed) turn it off
3. insert models
4. allow oven to cool and remove models
The bad experience I had may have been a defect in the oven, but I'm not going to find out a second time. I had placed the models in the oven and set it to pre-heat to 150 degrees. It appears that during the pre-heating process the oven went well above 150 to bring the oven to the desired temperature. That temperature was high enough to melt solder.
From: main@RealSTMFC.groups.io [main@RealSTMFC.groups.io] on behalf of bob.stetser@... [bob.stetser@...]
Sent: Saturday, April 11, 2020 7:29 PM
Subject: Re: [RealSTMFC] Painting brass
Soak in lacquer thinner for a couple of hours to remove whatever is on the model.
Run twice in the ultrasonic cleaner, let dry
Spray, from rattle can, Rust-Oleum Primer, SELF ETCHING PRIMER, let dry
Spray with airbrush color of choice.
Bake 1 hour in oven at 185 degrees, leave in oven until cool.