Is there an easy way to make a scroll spiral??

[ajr73]

I was trying to see if there is a c hook or a formula to make a scroll spiral like they use in a scroll fan housing or blower housing?? I have a formula, but it uses multiple arc centers and I just wanted a single arc center to make everything all that much easier. Thank you.

[Zero]

the only kind of spiral c-hooks I know of are:spiral.dll and thelix.dll

[Rick McAllister]

Have you tried a pocket, "True Spiral" and converting the toolpath to geometry then driving a tool on that geometry?