[GreenKeys] Sorry stuff

Roy Morgan roy.morgan at nist.gov
Wed Jul 27 12:19:45 EDT 2005


At 11:45 AM 7/27/2005, Tim Swarthout wrote:
>..in the late 50's or early 60's, Teletype started using a plastic foam for
>the sound deadening material....I want to remove
>all of it and replace it with something better. Are there any suggestions
>out there?

Tim,

I know of what you speak. I have a M-28 typing reperf whose foam is loose 
and a big bother, and some old Model 14's whose sound matting is fine and 
working well.

I have a couple of suggestions:

1) to remove the gunk-ud up crud, try various solvents, starting with 
kerosene (stoddards solvent, Varsol, or any parts cleaner) then move up to 
brake cleaner, naptha, or whatever you have. Acetone may well take the 
paint off. Be careful to test a solvent on the paint before applying much 
of it.

2) For a substitute, search the hifi speaker makers supply sources.  There 
many  materials used inside speakers that may do for you.  Also, there is 
available material to hang on the walls of your listening emporium to 
control reflections.. this stuff might be useful.

3) If you are handy with a sewing machine, you might be able to make new 
padding.. use blankets, the heaviest quilt batting you can find or whatever.

Roy



- Roy Morgan, K1LKY since 1959 - Keep 'em Glowing!
7130 Panorama Drive, Derwood MD 20855
Home: 301-330-8828 Cell 301-928-7794
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