Magnet insulation

[Spence]

I suspect the problem Possum's having is to do with the fact that he's inadvertently using an homonuclear diatomic molecular suspension of Dilithium with his nitrocellulose. I mean, how easy is it to make that mistake?
Must have forgotton about the pressure waves created with his warp drive winder in a liquid suspension with fibre and gas bubbles.

[David King]

Or just too much ozone from his toaster?

[Zhangliqun]

Nothing wrong with taping but the tape stops wax from entering the inside of the coil, what real effect that has I don't know, but I am trying to be more vintage correct and tired of taping.

I understand the point of the vintage-correct thing so no argument there. But I don't think tape stops wax. If it did, it would be impossible to pot a taped up humbucker.

[Ruel]

But seriously guys, Possum's problem is keeping me awake at nights. I did my first single coil rewind for a tele neck pickup and everything turned out fine. The customer was so satisfied with the result that he couldn't wait till the next morning to tell me how great the tone was. Must have been beginner's luck.

Looking back at what I did, I would say I did most things wrong. I did not even clean the bobbin and the magnets before I started winding. Just made sure that the edges of the bobbins were scraped clean. I did not even remove the wax that was still stuck in between the magnets figuring that I was going to pot the pickup anyway. For the magnet wire, I used a non-solderable 43 wire that has been lying under the sink for 3 years or so. Had several breaks. I did not follow the advise of most of you in a previous thread to start all over in case of a break. Soldered and sprayed the joints with lacquer. I did tell the customer though and told him that I will refund him should he be not satisfied with the result. He is still happy with the rewind and in fact, all his friends now want to have their pickups rewound the same way as his. BTW, the DCR was about 7K.

I just got hold of 80 pieces of alnico5 rods and I intend to wind some Strat and Tele style pickups. Would potting with lacquer the first couple of layers prevent shorts in the outer magnets? I am also considering what Spence said about using heat shrink tubing with the outer magnets.

[madialex]

Hey Possum, I called Lindy today

But they were closed. I will call again tomorrow when I get the chance and ask him what he uses, i'm sure it's no secret but just what is anyones guess. Later.

[Possum]

Cool.....

I tried the Varithane semigloss Diamond hard stuff, its better at the ohmeter test, maybe it would actually insulate, dunno havent wound one to try it, but its not as hard as the fralin dip is. More than anything now I'm just mystified what could be so hard in such a thin coating, I still think its some common material in a hardware store, automotive store, something easy to get. I for one will be eternally greatful if you find out....

[Possum]

I got it!!!!

Guiness!!!! Extra Stout, dip and then bake for two days. See this is driving me nuts....

[Joe Gwinn]

I tried the Varithane semigloss Diamond hard stuff, its better at the ohmeter test, maybe it would actually insulate, dunno havent wound one to try it, but its not as hard as the fralin dip is. More than anything now I'm just mystified what could be so hard in such a thin coating, I still think its some common material in a hardware store, automotive store, something easy to get. I for one will be eternally greatful if you find out....

Please try the Q-Dope. Allied Electronics carries Q Dope and its thinner.

Leo Fender was a radio amateur, and so would have been quite familiar with Q Dope.

[EtLa]

anybody here tried GLYPTAL 1202 varnish?

http://www.glyptal.com/1202Tech.pdf

Dielectric Strength – Dry (ASTM D115-55) 2500 vpm Dielectric Strength – 24 hours in water 600 vpm

GLYPTAL 1202 is suggested as a general-purpose insulating and finishing varnish for form and random-wound coils, stators, armatures, and most other types of electrical apparatuses. It is excellent for giving and oil-resistant finish coating over inexpensive asphalt varnishes.

[David King]

And the winner is!...

[EtLa]

1 gallon minimum order In a couple of days, time of shipping, I will let you know if the G1202 worth bying it.

[madialex]

Possum, I called Lindy

Guinness!!!! Extra Stout, dip and then bake for two days. See this is driving me nuts....

He said it was just plain ol lacquer he uses, he said he has never used any sort of white coating on his stuff, just the spray or dip it in a can of lacquer.. Scouts honer. And he is not known for mis information, he just isnt like that. He will give anyone any info he has to help someone out, I guess short of his recipe which goes without saying i guess.. I'm still stumped as to what could be happening.

Mine was the wire, after careful examination under a magnifying glass the wire had bare spots on it, crap wire I suppose. Sorry I couldn't be of more help.

[Possum]

very weird.....

I wonder what kind of lacquer he is using??????? Its not glossy, its super hard stuff, I've tried 4 differrent lacquers so far. The varithane diamond stuff gives a better tougher coat, I'm going to try that, I did a second coat I know that will work but thats too much effort really.

The lacquers I've tried are the musical instrument grade which is too thin. Minwax, which just plain doesn't want to DRY out, and Deft which is real thick but failed to work when wound is super glossy with puddles etc.

One coat of Varithane is invisible and pretty hard. I haven't tried winding this but it just might work....

[kevinT]

He said it was just plain ol lacquer he uses

Did he give any indication whether its a specialty lacquer for a certain purpose (wood floors, marine applications, etc..) or something that comes right off the shelf at home depot?

what about mixing lacquers? Did he indicate whether he mixes them or has his own receipe?

[kevinT]

I wonder what kind of lacquer he is using??????? Its not glossy, its super hard stuff, I've tried 4 differrent lacquers so far. The varithane diamond stuff gives a better tougher coat, I'm going to try that, I did a second coat I know that will work but thats too much effort really.

The lacquers I've tried are the musical instrument grade which is too thin. Minwax, which just plain doesn't want to DRY out, and Deft which is real thick but failed to work when wound is super glossy with puddles etc.

One coat of Varithane is invisible and pretty hard. I haven't tried winding this but it just might work....

Hey dave,

have you tried WATCO Clear Lacquer Wood Finish. Its available in gloss, semi-gloss, and satin. here is the link:

http://rustoleum.com/product.asp?frm...t_id=116&SBL=1

Maybe this is the plain ol lacquer that he was referring to.