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I am step by step disassembling all the helium leak detector I bought recently. There are several things to do.. cleaning the flanges, replacing the o-ring, checking the oil in pumps.. Ron Soyland mentioned that he disassembled also the spectrometer unit to check the filament state, so I decided to do so as well. The […]

I tried to etch a stainless steel today.. I used a mixture of hydrochloric acid (HCl), water and hydrogen peroxide (H2O2). The peroxide acts here as a catalysator, so when the solution stop etching, just add few mls of it and it start again (as long as there is still some HCl in it..). First […]

I accidentally skipped several levels in my research and bought a helium leak detector. It was located in France so I had to ask seller to arrange a shipment to Czech republic and.. it arrived yesterday! It is Alcatel ASM 51, 30 years old machine, but if it is working it will be much mightier […]

I finnaly got a stainless steel foil (316 type) I orded a few months ago from US. I don’t understand why such a primitive thing is impossible to get (or just find) in EU 🙁 The thickness of it is 0.1mm, I was afraid it would be too thin, but it exactly what I need. […]

I got some old non-working tubes to disassemble as Ron Soyland does. There are some nice pieces of material that are I could hardly find else as a molybdenum sheets, nickel sheets and pipes, getters, tungsten electrodes.. It is also nice stuff to study for possible working techniques.

I will try to make an induction heater from common induction cooker. Ron Soyland have already warned me that it will perhaps be impossible due to too low frequency of the induction cookers (60khz, needed is several hundred khz). I will try anyway, it would be so easy to just replace the coil that it […]