I had dip CR39 lenses in the vanish when I lift it up I found that the surface is become milky like cloudy. Who have the same experience like this, please support.
I had dip CR39 lenses in the vanish when I lift it up I found that the surface is become milky like cloudy. Who have the same experience like this, please support.
Your dip coating material is most probably a thermocure polysiloxane. Those material have to be shipped on dry ice, kept in a fridge or freezer/
These materials are very sensitive to humidity of which you have plenty. See that you work in a clean room condition, means also temperature and humidity control. Check back with the supplier or better the manufacturer of the materials.
Agree with Chris, 90% sure this is humidity. In the lacqer or in the air.
If this is in the lacqer, not much thing to do. Change it. Somebody told me once you can add something who will catch the water but never tried and will probably never do.
But if the humidity is in the air, you can try to work with warmer lacqer. It will attrack less of this humidity.
While typing this message, I'm thinking (Thats append sometime :hammer:) Doing cr-39, Your caustic maybe too strong and you may etch the lenses too much. Check the lenses just after etching.
in case that I have the humidity in vanish how to evaporate or remove it out? The humidity in the air we can control with the air hanlding unit with can control both of temperature and humidity.
If you have water in your varnish you can not remove it. It is spoled. Get a new one.
Really, I can not remove it by stirring or? But one thing why when use this vanish for longtime the cloudy seem like slightly disappear? Is it possible that the moisture is go away?
:shiner: guess they looked at the bill when that new bottle came in.
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