Re: death of a pancake

["Tesla list" <tesla-at-pupman-dot-com>]

Original poster: "Peter Lawrence by way of Terry Fritz <twftesla-at-qwest-dot-net>" <Peter.Lawrence-at-Sun-dot-com>


Guys,
     try some lines of "super glue" to hold the windings down in a few places
before varnishing. Use the "thick" kind (at hobby stores aka gap filling).
You'll probablly have to fog it with your breath to get it to catalize.
-Peter Lawrence.



>Original poster: "marc metlicka by way of Terry Fritz <twftesla-at-qwest-dot-net>" 
<mystuffs-at-orwell-dot-net>
>
>Hi DWP,
>
>  Yes you are most likely right on the mark here, I knew deep down that
>a day between coats would be best. I was way to Impatient and it cost me
>a "BUNCH" of man hours and a good chunk of wire, A lesson learned is
>Help for all!
>  The sad thing is that the transformer varnish i used is of the "air
>dry\low bake" verity (place "bummer" smiley here).
>I could have said that the windings were burnt beyond repair, maybe they
>are, but i want everyone on the list to learn from my mistakes right
>along with me. I try to remember others mistakes that are posted to help
>me along, just repaying the favor.
>
>  I will wind another 20" coil, I will varnish it right from the start
>and i will bake it nice and hard! I don't think i will fiberglass it
>like was mentioned, the wood dust filler would give a much lower
>breakdown voltage. 
>  I think i will build this one with a few added features that i thought
>about before and i will make a much nicer primary support system that
>will have interchangeable coils.
>  one thing for sure, these coils are challenging!
>I will keep all updated,
>Marc M.
>Geek #1055
>  
>
>Tesla list wrote:
>> 
>> Original poster: "davep by way of Terry Fritz <twftesla-at-qwest-dot-net>"
><davep-at-quik-dot-com>
>> 
>> I May be off base here, or saying something everyone knows,
>> but, in case...
>> 
>>         Some coatings do not 'dry' immediately.  Can take LOTS of time
>>         (up to days) to completely 'dry'.  In many cases, there is more
>>         to 'drying' than evaporation of solvent (drying), but fairly
>>         complex chemistry goes on (mostly polymerization).  Some of
>>         these reactions take time.  An added layer, added too soon,
>>         can 'trap' vapors still working out from an (apparently)
>>         'dry' underlayer.   Or solvent can leech back down in...
>> 
>>         best
>>         dwp
>
>
>