6 Attachment(s)
2 hour heat test of lubes
I've made a heat test chamber from a cardboard box and using a heater fan to blow hot air.
I also made a power controller and first tested out the design on one of my Lee pots (pic 1).
The whole setup with power/temp controller, fan and heat chamber. A piece of glass on top keeps the hot air inside and allows inspection
I have a thermometer with it's probe inside the chamber to monitor the temperature inside the chamber (pic 2).
After two hours at 122F / 50C the lubes looked like this(pic 3).
As seen from the backside, the seepage is more visible (pic 4).
The lubes are:
1. FWFL with Sodium Stearate
2. FWWFL, "Felix-Wiljen World Famous Lube". The Felix recipe modified by Wiljen with Stearic Acid + Carnauba
3. FWWFL, without Carnauba. Slightly softer, which I want to try
4. NRA 50/50 BW/Alox 350 (Actually a little more beeswax than 50% to make it "dryer")
5. California Saeco Green (BW, paraffin and STP)
6. Old NRA lube (BW, paraffin and vaseline)
Now all that remains is to find a suitable box for the electronics. I will try it on my Lee pots also, to see if I can keep the temps more stable. Otherwise I have a PID controller ready to modify for the higher temperatures...
Edit Oct 5:
I have continued the test today and increased the temperature slightly, to 131F / 55C and run it for one hour, see pictures 5 and 6. Note that Calif. Saeco Green has started to melt. Otherwise, only some more seepage from the other lubes can be observed.