CNC Chip fans can cost hundreds of dollars. Plastic may not hold up as well as aluminum, but so far these have held up fine for several months. You can print more than you'll need for less than the price of one from your CNC supplier. Works very well, our CNC shop uses these instead of buying them now. I can also print for you in resin using a resin laser printer.
This design also has a center through hole for the option of washing parts while removing chips.
Use this Chip Fan safely as with all CNC parts! never use with the doors open. Only experienced CNC operators should use this.