Are you read to print an Iris box?

I became frustrated trying to print an iris box so I made this little test slice of one to help me dial in my printer while saving time and plastic. All surfaces have 0.3mm clearance. All walls are 1.2mm thick. I'll be honest, so far I'm not ready to print an Iris box. Stringing and blobbing are still getting in my way but by having this part to print I've saved a lot of time and plastic. If you are able to print an iris box I would love to hear if you find this test part easier, harder, or about equally challenging to print. Likewise if this shape helps you dial in your printer please share your settings and success stories :D This hosted file keeps creator credit and license details.