Iris ~120mm for Stepper

prusaprinters

<p>Iris / shutter / Blende / Aperture based on <a href="https://www.thingiverse.com/thing:773759">https://www.thingiverse.com/thing:773759</a><br>In one of the pictures you can see the size comparison<br>I scaled and changed the design to fit a 28BYJ-48 Stepper.<br>The size was determined by the prusa mini printbed dimensionen.</p><figure class="image image-style-align-center"><img src="https://media.prusaprinters.org/media/prints/128069/rich_content/079ec7c3-3178-41a7-9d15-2e811a2c10a6/iris_3.gif#%7B%22uuid%22%3A%22017e9a5f-ac49-41e5-a0ed-ae03cafe5e0f%22%2C%22w%22%3A320%2C%22h%22%3A253%7D"></figure><p>It is still printable on a Prusa mini</p><p>you have to print 11 lamellas/leaves and pins</p><p>you may have to turn and rotate the parts so that they can be printed on your printer</p><p>a few of the spacers (I used nuts instead)<br>some M3 and M4 screws to put it all together.</p><p>I used silicone spray to improve the mechanics<br>the opening of the iris is between ~ 15-117mm.<br>It can not close completely</p><figure class="image image-style-align-center"><img src="https://media.prusaprinters.org/media/prints/128069/rich_content/135e9dbd-5e70-405d-a90b-cc798e6d37c8/iris_explosion.gif#%7B%22uuid%22%3A%22b1c4a64d-dc10-42ff-a586-433225444226%22%2C%22w%22%3A578%2C%22h%22%3A563%7D"></figure><p>last image:<br>OPTIONAL: depending on your way to control the stepper you may need some kind of emergency stop. I cut a few teeth so that the motor cannot go beyond this point</p><figure class="image image_resized image-style-align-center" style="width:75%;"><img src="https://media.prusaprinters.org/media/prints/128069/rich_content/b08e6209-a61b-43d5-8ad0-05a0b9c5a9f5/iris_emergencystop.jpg#%7B%22uuid%22%3A%22318c9312-5971-4a3c-8bc9-88a8cdb5f841%22%2C%22w%22%3A1280%2C%22h%22%3A960%7D"></figure>