Re: Brass freight car noise - NOT TRUCKS
Garth Groff and Sally Sanford <mallardlodge1000@...>
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Foam rubber, or artificial foam as is more likely, might quiet such a car. However, both materials deteriorate with age and become flakey, making a potential mess. White styrofoam blocks carefully cut to fill the car might be more stable.
Non-expanding spray foam is messy, and the solvents in the foam could dissolve some plastics, as does acetone. I used acetone to clean some used archery bows I bought for our loaner kit, and found it temporarily softened fiberglass or the acrylic plastic, though eventually it hardened again without serious damage.
Garth Groff 🦆
On Wed, Aug 26, 2020 at 6:34 PM mark_landgraf via groups.io <email@example.com> wrote:
You might try, for a boxcar, packing it with foam rubber. If you are really desperate, fill the car with non expanding spray foam. Given the sloppiness of using spray foam, I would do it on a painted car. Clean-up is with acetone. Packing a car with fiberglass insulation may also work. Automotive spray undercutting would probably work too.