14 degree (full angle) carbide burrs are a standard item and
inexpensive. Long shank tools are available, as well as those with
wider flutes for cutting aluminum.
Best -- Terry
On 7/25/2020 11:24 AM, Daniel Dyck wrote:
Thanks Theo. Machining was definitely complicated. For a college team w/ limited resources I would highly suggest going AN, aluminum, and designing it to slide into the flare, w/ no curves (like my waterflow demo venturi). Additionally if your diffuser half angle is 7 deg, you can buy 7 deg tapered end mills.--