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Registered Member #39190
Joined: Sat Oct 26 2013, 09:15AM
Location: Boise National Forest
Posts: 65
By the way, you can melt paraffin and petrolatum (Vaseline) together in any ratio you want. At around 50:50 you get a substance that is less prone to shrinkage and cracking, and still a fantastic insulator. Maybe better, because it tends to soak in more and fill all the cracks.
I've used hot glue successfully before. The trick is to clean the area extremely well and to preheat the area to about 120F or so, so you get full adhesion and no air pockets.
The paraffin and petrolatum mix works very well too.
Registered Member #54278
Joined: Sat Jan 17 2015, 04:42AM
Location: Amite, La.
Posts: 367
I made (16 years ago--bottle is dated) a batch of "Vaseline: Paraffin" @ 4:1 respectfully, to use as Vacuum Grease as suggested by a very old "Amateur Scientist" column from "Scientific American" --an issue from back in the day. Works great--NO deterioration, even today!
@Patrick: Do you mean you -store- it under oil? I still have my 1st 50kV HV probe with the spiral resistor string stored in transformer oil and a top seal of plain paraffin...used a huge plastic drugstore Rx bottle, they seem to be top-notch insulators. There has always been something about hot glue that bothers me!
@Sigurthr: maybe doing that with the hot glue?
EDIT: There is a patent by TESLA Pat# 577,671 "MANUFACTURE OF ELECTRICAL CONDENSERS, COILS, AND SIMILAR DEVICES". That really get into how to 'wax insulate' these things. Back then (pat. date is: Feb. 23, 1897) the setup was complex--today it should be simple.
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