Is the acrylic glass hardened and has a small surface? Iroko (Milicia excelsa) grows in tropical Africa as 50 - 60 meter high straight and often branchless tree, with an 1upto 2.5 meter wide trunk. KelaiWood , https://www.kelaiwoodens.com
Acrylic glass lenses are usually hardened. Some look very clean during the cleaning stage, but after the hardening solution is processed, there are many small pits. Why? Evergreen Chemical has extensive experience in cleaning before hardening. After research, generally there are two possibilities: The first one: the front cleaning did not clean the oil on the glass surface, not thorough. In the place where there is oil point, the hardening liquid can not be covered, so a small defect is formed. The second type is also about the front cleaning, the washing after washing is poor, no rinsing is thorough, the cleaning liquid remains on the lens, and the residual place is The hardening fluid is separated and uncovered. In short, the problem is that the optical glass cleaner formulation used for cleaning is not good. Therefore, after research. Evergreen Peak has developed an optical glass cleaner for the characteristics of pre-hardening cleaning and has proven its reliability in a large number of practical applications!
The wood sources from this tree various from butter yellow to golden brown, from soft pearly green to brownish red. The grain is often straight, but can have a slight wave. It contains a substance that dissolves in organic solvents which increases the drying time of varnishes/lacquers finishes.