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I posted a picture Instructable of this, and someone wanted me to make an instructable.
This mechanical iris has 6 segments, I plan to add more, it is "upgradable", as for that I can add more segments and fix broken ones. It can open and close smoothly, and it had a detachable strap to make it a monicle but I broke it a while ago
New thing: the first 2 people who make this will get a patch!
Edit: Win Guy already made one! look at the top comment and you will see it. There is only 1 patch left!
Step 1: Supplies
-Printout, image below
-scissors and hobby knife(Xacto Knife)
-snippers or plyers
-foam core, I used 1/4 in
-credit cards or gift cards with no protruding objects( I don't know now many I used, but I guess i used 3-4)
Step 2: Print out the paper
UPDATE: I finally made a real thing that you can print out instead of this image. Just print that out instead
Step 3: Cut it out
For the "combined" only cut out the shutter part of it
also keep the "extra cam wheel"s , they are need for alignment
Step 4: Glue it on
Using larger foam core, glue on the cam wheel and brass ring separately(far apart), also from the extra paper you have, cut out an extra cam wheel and glue it on, it is used later on to hold the cam wheel together.