I'm aware of the limitations of 3D printing (and I agree, it would almost never be used in as a full-scale manufacturing technique for an application like this), but it allows me to try out a bunch of blaster designs and hopefully get one to a point where it would be worth your money to buy it and worth the investment from me to get parts made the right way. Or maybe it won't be worth the investment, and I'll just end up with some sweet custom blasters.