[Lowfer] LF Coil Form

[stan, W1LE]

The round concrete form for footings is a good alternative from Home Depot.
Mine is 12.5" OD with 1/8" wall.   Buy the length you need in 4' increments.

It looks like compressed fiberboard, but I know that it disintegrates 
out in the weather,
but it matters not, because by then the concrete is hard.

My thought is to wind the coil, then give it a coat or fiberglass resin 
for a little waterproofing.

Other possibilities are a 55 gallon white plastic drum with straight 
sides or the 190 liter pickle barrels.
I would avoid any colored barrels, like black, because of the 
pigmentation may effect electrical performance, maybe.
These UN rated plastic barrels are very durable and have lasted for 
years in their outside storage role.

I got my 55 gallon barrels for yard waste from a used barrel dealer.

Stan, W1LE     Cape Cod



On 09-Feb-14 4:08 PM, Peter Barick wrote:
> OUCH, Old boy! Only $100?? ;~)
>   
> Locally I've picked up scrap green sewer pipe from street work around town (only after hours). Always have remnants of those jobs. Last one was about 5 ft by 18 inches. Also found a 3 foot D pvc drum (no metal rings) that a business discarded full of trash. I emptied it for them. And I have a smaller 18 inch white pvc
> bucket w/ straight sides, another discard.
>   
> Has anyone noticed the cement formers sold in home inprove stores? They are hardened fiber and I believe up to 2 feet in D. And scant few bucks!
>   Cheers, Peter, Illinois
> ---------------------------------------
>>>> pbunn <pbunn at matrixei.com> 02/07/14 8:28 AM >>>
> Just a FYI
>
> I have been searching for quite a while for a reasonably priced coil form for 137 and 75 KHz. It ended up being right under my nose.
>
> Harrison Superduct - Plastic duct is available in many sizes up to 60" diameter. I just bought a 36" long 16 " OD section for just over 100 bucks. That may sound expensive but compared to Schedule 40 or 80 pipe it is cheap. It is made of PVC and is thin wall duct. They take credit cards and will ship UPS but the plant is about 30 miles from here in Clover, SC and I can pick it up.
>
> Pat
> WG2XLP
> WG2XCT
> N4LTA
>
>
> ______________________________________________________________
> Lowfer mailing list
> Home: http://mailman.qth.net/mailman/listinfo/lowfer
> Help: http://mailman.qth.net/mmfaq.htm
> Post: mailto:Lowfer at mailman.qth.net
> Post must be less than 50KB total for message plus attachment!
>
> This list hosted by: http://www.qsl.net
> Please help support this email list: http://www.qsl.net/donate.html