Got Phosphor?
Posted: Thu Aug 23, 2001 3:14 pm
For those stary eyed folks looking to make hornyak buttons, BC-720 work alikes, etc., you must obtain good phosphor of known quality and form.
Got any sources? I have checked, and while some of my old sources are no longer around, ZnS (Ag) phosphor was around 130.00/ounce! That is enough to do about 200 CRTs!
In this day and age, the availability of small quantities of anything is dwindling. The mentality is sweeping over the land for suppliers that "if you can't buy a ton don't ask for a pound". The few suppliers who will still sell small quantities usually work on a 200% profit basis. I recently ordered 100 lbs of tin so I could get 25 pounds. The stuff was $8.60/lb in 100 weigh or 17.00/lb in 1 lb bars. It seems the phosphor folks are of this mindset also. ( I have been selling the extra tin at $10.50/lb to friends and associates.) Most small jobbers with published prices, over price such metals as the markets are volatile.
Make your own phosphors? Maybe, but I haven't seen the epitome of the process of this particular phosphor yet in print.
Old phosphor or scourged phosphor is a possibility, but the age and history of a phosphor can affect its performance. The active sites just sort of die with time and exposure to radiation and gases in the atmosphere.
If I turn up any credible, reasonably priced sources, I will post the info on the source here.
So, I once again query, as in the milk commercial
Got Phosphor?
Richard Hull
Got any sources? I have checked, and while some of my old sources are no longer around, ZnS (Ag) phosphor was around 130.00/ounce! That is enough to do about 200 CRTs!
In this day and age, the availability of small quantities of anything is dwindling. The mentality is sweeping over the land for suppliers that "if you can't buy a ton don't ask for a pound". The few suppliers who will still sell small quantities usually work on a 200% profit basis. I recently ordered 100 lbs of tin so I could get 25 pounds. The stuff was $8.60/lb in 100 weigh or 17.00/lb in 1 lb bars. It seems the phosphor folks are of this mindset also. ( I have been selling the extra tin at $10.50/lb to friends and associates.) Most small jobbers with published prices, over price such metals as the markets are volatile.
Make your own phosphors? Maybe, but I haven't seen the epitome of the process of this particular phosphor yet in print.
Old phosphor or scourged phosphor is a possibility, but the age and history of a phosphor can affect its performance. The active sites just sort of die with time and exposure to radiation and gases in the atmosphere.
If I turn up any credible, reasonably priced sources, I will post the info on the source here.
So, I once again query, as in the milk commercial
Got Phosphor?
Richard Hull