Here is a 3 INCH WAVY LINE OP ART CASSETTE effect for OPTIKINETICS PROJECTORS SOLAR 250 , GOBOSHOW , GOBOPRO,  K1 , K2 , K2 +,K4  designed by light designer LIGHTNING ROD from BUBBLE VISION .

He has been making these wheels for over 10 years 

Opti has now stopped manufacturing the 3 inch cassette so effects like this are becoming rarer and rarer.

PLEASE BE AWARE THAT YOU WILL NEED A 3 INCH CASSETTE ROTATOR TO RUN THIS  WHICH I SELL ALSO.

IF YOU LOOK ONLINE YOU CAN FIND BUBBLE VISION (.UK) AND SEE OUR VAST ARRAY OF EFFECTS AND ACCESSORIES E.G RODOGRAPH WHEELS , PRINT WHEELS METAL ETCHED AND PRINT EFFECTS , ROTATORS AND PROJECTORS  .