[GreenKeys] Foam

[Ken Wiebe]

My interest was in replacing the original foam which is disintegrating.

-Ken

On Mon, Jul 29, 2019, at 06:02, Cory Heisterkamp wrote:
> Anyone hear from Dave Tumey lately? He had commissioned die cut foam for the lower 32/33 oil pad a couple years ago. The couple pieces I ordered looked great. Of course the OP may not need that, but a lot of this original foam has turned to mush. -C
> 
> On Mon, Jul 29, 2019 at 7:43 AM Nick <creativegardening at hotmail.com> wrote:
>> Vibration absorption and/or sound damping material, I used 1/2" yoga mats in the past with great results. Porous and heavy enough (just right) to be satisfied in any way. Easy to cut and work with, easy to clean and super light in weight. And the good part: they are dirt cheap $5-7 each on sale. All you need is a sharp utility knife and your choice of adhesive. In many cases, you even don't need adhesive - precious cuts and you can wedge the material in place. 
>> 
>> Try it, what do you have to loose. 
>> 
>> Nick - N0NCQ 
>> 
>> Sent from my T-Mobile 4G LTE Device
>> 
>> 
>> -------- Original message --------
>> From: Richard Knoppow <1oldlens1 at ix.netcom.com>
>> Date: 7/29/19 2:52 AM (GMT-05:00)
>> To: greenkeys at mailman.qth.net
>> Subject: Re: [GreenKeys] Foam
>> 
>>  Good question. Acoustical foam is a porous foam meant to 
>>  absorb air conducted sound. Another sort of foam is used on 
>>  mechanical parts, like the cases of typewriters, to damp 
>>  vibration. This is not porous but rather heavy. Often has 
>>  adhesive on it. The idea is that by damping the vibration of thin 
>>  panels they can not act as sound radiators. Acoustical absorbent, 
>>  either foam or fiberglass or old fashioned felted horse hair, is 
>>  not a very good dampener. The damping foam looks something like 
>>  really thick tar paper.
>> 
>>  On 7/28/2019 11:16 PM, Clay Archer wrote:
>>  > I think he is looking for acoustical foam to dampen the sound, 
>>  > not the blotter foam pad under the TU. I may be wrong….
>> 
>> 
>>  -- 
>>  Richard Knoppow
>> 1oldlens1 at ix.netcom.com
>>  WB6KBL
>>  ___________________________
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