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Re: weird primary design
Hi Terry, Matt, all,
>Comments below:
>>Hi,
>>since I dont have any access to a saw or a drill press,I was wondering if I
>>could take my main 2ft by 2ft board and drill holes where the normal primary
>>wire supports would be.Then I would simply put wire ties on each set of
holes
>>thus holding down a turn of the primary.Any one know how to preform the
>>primary or know any other alternatives to this since I dont have a saw for
>>cutting slats or a drill press for drilling precise holes?
>>
>
>Anything that will hold the spiral into shape without conducting
>electricity will be fine. A few people have managed not to have any
>support, just a spiral lying on plastic. However, that seems really hard
>to get just right. Even electrical tape may be a thought.
>
>Tye-wraps have been used by many people with great success. You will need
>a lot of them... Do not get the black UV type. They may contain
>conductive carbon.
>
>Cheers,
>
> Terry
I agree that anything non-conductive can be used. I use wooden forms for my
primarys and they've worked just fine. Always seal the finished product
with a poly coat or varnish before winding. I also used ty-wraps (even
black ty-wraps) and never had a problem. If you use ty-wraps, I recommend
the 1/4" width. Only one hole is needed per turn/runner joint. A through
hole is drilled - the ty-wrap is fed up from the bottom through the hole -
around the primary turn - and back down the same hole - then locked on the
bottom. Actually, turns out very neat and tidy and secure - also, as long
as the drilled hole is "just" large enough to feed the ty-wrap through, the
ty-wraps act as standoffs from the runner by about 1/8 inch when used with
this method.
Bart
Bart