[Milsurplus] DIY Vacuum Chamber

[Facility 406]

On 9/22/2026 10:34, Brenda Gentry via Milsurplus wrote:
> Tektronix oscilloscopes have a high voltage transformer that absorbs 
> moisture and fails until it is heated and dried out. I am wondering if 
> putting it in a vacuum chamber covered with a dielectric oil, heating 
> it, and then drawing and relieving the vacuum a couple times would draw 
> out the moisture and impregnate the coils with the oil and keep moisture 
> out.


I collected my various pots for similar projects, using hot wax, or 
polyurethane to seal coils, transformers, and the like.  It was "all the 
rage", back in the day.

Kurt