Rebilt of my Hand Warmer

Today, had my repacking kit delivered by Mr. Postman.
I immediately went to work and repacked the top 50% of the reservoir with Carbon felt;
Fitted 1/3 of a catalyst pad in a spring;
Fiddled the head to make it hold adequately on the warmer (the spring diameter made it difficult to snugly fit the head on the warmer);
Loaded the warmer with 15 ml of naphtha;
Waited 10 minutes;
Warmed the body;
Gently skimmed a flame close to the catalyst ;
BINGO!
The test is very conclusive. The warmer works really well in delivering heat.
I’m now ready to face this winter’s harsh temperatures.

Thanks for the feedback magen,

Which model of handwarmer did you rebuild?

I don't know the model of handwarmer but it is identified with a "Made in HongKong" !

See Picture:
HandWarmer

I did not buy it myself.  It was probably my father's.  I'm sure it is very old... 30 + years !

I got a new one from eBay like that without the "made in Hong Kong" , the "new" catalyst could not light up, it was some sort of powder wrapped into an aluminum mesh.
I replaced the catalyst putting it in a spring and looks well fitted, I also did the carbon felt strip on top of the cotton. however it goes off after the first 20-30 minutes of use hanging on my chest inside my jacket. when I start it again it produces much more heat and stays on much longer.
Thanks