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Iris mechanism glasses out of paper and string. The above video was made in Autodesk Inventor publisher, and the model was made in Autodesk Inventor. The attached PDFs ...
Everything you need to cut is in the pdf EXCEPT the mailing tube rings--cut two 3/8" high rings out of the tube. The 36 "leafs" are cut out ...
Take the bristol "leafs" and score along the line at the end. Be sure your leaves are facing counter clockwise. Then bend forward to 90 deg and back ...
Next take your leafs and double tie a knot to the piece that has 18 holes in it. Be sure to loop the inner side of the ring ...
Take your mailing tube rims and mark/measure 2.5" diameter from one edge to the next. Cut out a 1/16" high channel between your marking.
Glue your flower ring piece to the bottom of the rim of your tube ring , with the channel you just cut facing up(left pic) Let it dry ...
Take your glass frames and score lines where the legs of the glasses will bend
Now attach your mechanism to the glass frames. Be sure you keep the tabs at the right corner of the channel you cut out of the mailing tube ...
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