Description

I wanted to see if I could create an iris shutter mechanism from the ground up so I followed https://www.youtube.com/watch?v=aLX-CUytisQ but in Sketchup rather than with paper. Once I ran a test print to see it could work, I revamped the design to make a solid housing and fix a problem with the leaves sticking on the push-through pegs.

This whole design is really overkill for what it is, I just wanted to learn how to make it and try using a pause in the printing to drop in the nuts for the bolts.

Printing

To create this model, you'll need 6 M3x16 bolts with matching nuts. You'll need to print:

• 1x Casing - Bottom
• 1x Casing - Top
• 1x Handle Ring
• 6x Leaf with peg
• 6x Peg

When you load the Casing - Bottom model, you may get a message about an integrity error. Don't repair it. This is because of the gap between the end of the groove layer and the bolt hole just above it.

Assembly

This is a fairly simple stacked design, the included Sketchup file shows how it's assembled and it follows the process in the YouTube video so you can use that as reference.

The leaves are printed with one peg built in and will need the other pushed through so that the pegs face in opposite directions. I tried to use push-through for both directions but the leaves caught on one of the pegs. The built-in peg is pushed into the Handle Ring.