Good advices for a newbie (threading tools lathe)

[rendoman]

Hi!
you're right, the tungsten rod shows some oxidation, I can try grinding the tip in order to see if something change, maybe the flame can oxidize the tip continuously during operation? I remember old chemical exp with copper sulfate and flame, it can be something similar in fact

I tried different position and different capacitor + resistor of the 3\4 reaction loop. separate discussion for components, because they change with main coil, i adjust the position of this loop with neon tube. There's a range of half inch about in which the strenght of the field is stronger, using neon tube it's pretty easy to locate the best position

I see another good thing with the new tuning, semi faraday gage is still helpful, but the negative interaction with the environment is decreased, as temperature of coils and even temp of power transformer. For sure it drains less current relating flame size. Excepts for overdrive, datasheet of tube said maximum operation value of 250v, at this driving voltage i got 130ma at flame, with great size.
I'm going to make some modifications on circuit, hope to got some news in few hours