[Hallicrafters] S-120 receiver - celloluse nitrate lacquer?

[Peter VK6PM]

	I've been discussing off-group whether the clear lacquer used on the
front panel of the S-120 might be celloluse nitrate lacquer. 

	You might recall that nitrate is unstable, early movie films pretty
well self destructed before the introduction of "safety film". 

	I think that is what's happened to the S-120. The lacquer has "gone
off". The metal underneath looks OK. 

	The problem may be present on other S-120s. I wonder if other people
have discovered similar front panel damage? 

	Can people also check under the plastic knobs of their S-120s and 
look for anything strange, blue and gooey?  

	I'm not sure, but this might be caused by off-gassing of the nitrate.


	Maybe we have discovered a new challenge to keeping these sets
presentable. 

	Does anyone have insight as to what clear lacquers were used on these
later Hallicrafters sets? 

	Regards 

	Peter VK6PM

-------------------------
Email sent using Optus Webmail