Join Date: Feb 2002
Location: Perth, West Australia
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I got hold of some very fine glass beads - 25 micron, and tried mixing various percentages with the matte medium I have been using.
Forget it! ......it doesn't work, as mentioned by KBK some time ago. There is more to this than we think - someone mentioned REFRACTIVE INDEXES : hmmmm.....?.
Perhaps, someone with a bit of knowledge and experience with gllass beads would like to comment on this?
While at a large art supplier, I came across three different grades of pearlescent powdered pigment under the brand name of JACQUARD. The powders come in MICROPEARL, PEARL WHITE and MACROPEARL.
I purchased and tried MACROPEARL - 5% in matte clear medium, 2 coats on a small sample board.
This was compared to a well known company's 2.0 gain pearlescent sample.
The result was what I estimate as nearly identical to the 2.0 pearlescent sample.
Jacquard's description of the three grades of powder are as follows : MICROPEARL - ''produces a satin effect '', PEARL WHITE - ''medium size particles with exceptional brilliance''. MACROPEARL - '' are the most reflective''.
It is interesting to note that the pearlescent medium (FOLKART brand ) that I have previously used had very fine particles and in a comparison to the MACROPEARL, did not have anywhere near the final gain factor.
So,...... size does matter !