[TCML] How necessary is a Terry Filter

["" Vinnie <teslatech@xxxxxxxxxxx>]

Hi Guys

In building a new coil I am wanting to do it right and also hope to 
have it around for a long time. When I built my first coil I had no 
transformer protection other than a simple safety gap. Both of my 
transformers are still good even with out the filter.
I was wondering if I really need this layer of protection? I run my coil 
with two 12/30 NST's and an RQ spark gap that contains 6 segments of 
1in. copper couplers.
Second part I am wondering about AC line protection? I see that some use 
an RF filter on the AC input.
If anyone has any advice /parts list or completed Terry Filter I would 
also be interested in cost. I'm trying to work within a pretty tight 
budget at the moment
so I would suppose that making the filter myself would be best but just 
thought I would ask.

As always thank you for your time and guidance,

Vinnie
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