Spaghetti iris up close
The whole iris is made of polypropylene – a thermoplastic polymer – making it both tough and food safe. As it’s a mass produced product, all the parts are injection molded.
Holding it up to the light shows the gray blades to be slightly translucent. This is likely due to the thinness of the material of this part. Even the body exhibits the same to a degree.
Taking the spaghetti iris apart is a simple process. The two halves of the body are glued together, and so carefully prizing them apart easily opens up the device.
The actuator ring
The handle is offset so that when the iris is assembled, it is on the central plane, making the operation of the iris symmetrical. Lining the handle pin up with the measure on the body sets the portion size.
The Joseph Joseph adjustable spaghetti measure is a thoroughly thought out iris diaphragm design. It functions well as a measure, if perhaps a little tricky to operate one handed whilst holding spaghetti in the other.
The Joseph Joseph adjustable spaghetti measure was purchased from Amazon.