- Feb 27, 2011
what about testing like ballistics gel?
take a worldwide available candle (wax) with a special colour eg brown (mass coloured-not surface), slice 2cm piece
and lay it on a light (neon or led-should be cold) to see trough a bit...shine on 30seconds with your lp from above and measure the depht and the diameter of the fresh molten pond and multiply them
depht will be more when focused,diameter will be more with non focus lp
what you think ?
If I understand you correctly I don't believe this would work because results would vary with power density.