$Pioneer$
New Member
Hi,
I got the idea of the radiation meter when I saw that the device I was going to buy in Japan was from the Sendai region...
Who wants to have a radiation source at home?
Many of these old devices from Japan have this whitish coating. I assume the cause is the humid climate in the coastal areas.
Unfortunately, the black paint is often attacked and undermined. The sloping rear wall of the C3 is made of aluminium.
The white coating is nothing more than decomposed aluminum that has come to the surface. Added to this are deposited dust and dirt.
It can be treated with polish (e.g. with fine ceramic hob polish or chrome polish). An old toothbrush does a good job in the corners. As always, test on a small area first!
Since the paint is perforated where the white aluminum oxide exits, the optics can only be improved but not completely removed.
Caution: do not polish off the printed inscriptions...
I got the idea of the radiation meter when I saw that the device I was going to buy in Japan was from the Sendai region...
Who wants to have a radiation source at home?
Many of these old devices from Japan have this whitish coating. I assume the cause is the humid climate in the coastal areas.
Unfortunately, the black paint is often attacked and undermined. The sloping rear wall of the C3 is made of aluminium.
The white coating is nothing more than decomposed aluminum that has come to the surface. Added to this are deposited dust and dirt.
It can be treated with polish (e.g. with fine ceramic hob polish or chrome polish). An old toothbrush does a good job in the corners. As always, test on a small area first!
Since the paint is perforated where the white aluminum oxide exits, the optics can only be improved but not completely removed.
Caution: do not polish off the printed inscriptions...


