I purchased it in 2' cubes.
Carl
KM1H
----- Original Message -----
From: "Roger" <sub1@rogerhalstead.com>
To: "Carl" <km1h@jeremy.mv.com>
Cc: "k7fm" <k7fm@teleport.com>; "Dave Harmon" <k6xyz@sbcglobal.net>;
<amps@contesting.com>
Sent: Wednesday, September 30, 2009 12:52 PM
Subject: Re: [Amps] Parasitics can kill
>
>
> Carl wrote:
>> I prefer my wheels to be on the ground!
>>
> In the air and on top<:-))
> It's a rather common method of shaping to core material for smaller
> aircraft and even prototyping.
>> Ive used a homemade hot knife with a Variac to cut foam at work to space
>> microwave antenna panels in prototyping. At home Ive replicated several
>> V-8 engines when building hot rods and doing engine swaps in other
>> vehicles.
>>
>> Industrial hard foam works the best altho a bit pricey.
>>
>>
> The most common is good old fashioned Styrofoam (TM), the blue
> building/construction insulation. It can be purchased in large blocks in
> addition to the 1" or 2" insulation sheets. Cut to shape, rough sand, and
> then cover with fiberglass and epoxy resin. This approach doesn't work
> well with Vinyl Ester Resin as the resin dissolves the Styrofoam. <:-))
> Does it fast too. It just seems to disappear.
>
> 73
>
> Roger (K8RI)
>> Carl
>> KM1H
>>
>>
>> ----- Original Message -----
>> From: "k7fm" <k7fm@teleport.com>
>> To: "Carl" <km1h@jeremy.mv.com>; "Dave Harmon" <k6xyz@sbcglobal.net>;
>> <amps@contesting.com>
>> Sent: Wednesday, September 30, 2009 10:16 AM
>> Subject: Re: [Amps] Parasitics can kill
>>
>>
>>
>>> "Hey, thats an excellent application for an otherwise useless item, a
>>> hot
>>> knife for cutting foam."
>>>
>>> And, the old Heath electronic switch, which was used to switch inputs to
>>> the single channel scopes, is a perfect box for the power supply to
>>> operate the foam cutting tool, along with the nichrome wire. I used
>>> that arrangement to make a foam mold for a new fiberglass wheel well for
>>> my experimental aircraft. Works nifty. I have not had any parasitics
>>> since then.
>>>
>>> Colin K7FM
>>>
>>>
>>
>> _______________________________________________
>> Amps mailing list
>> Amps@contesting.com
>> http://lists.contesting.com/mailman/listinfo/amps
>>
>>
_______________________________________________
Amps mailing list
Amps@contesting.com
http://lists.contesting.com/mailman/listinfo/amps
|