which thread mill to use,single point or multi

[PaceToolmaker]

I am looking to thread mill aluminum and magnesium prototype parts from 2-56 thru no bigger than say 6-32's.Would you guys recommend a single point tool or multi flute tool. We tap deep holes in these prototypes and have trouble using bottom taps and roll taps are not an option,thats why we are looking at thread mills.All these parts have small holes metric and standard both.Have not thread milled much of anything so appreciate any advice you guys have.We are a job shop and do protypes all the time anywhere from 10 parts to 200 parts...

[Bruce Caulley]

In those materials I wouldn't hesitate to recommend multi-tooth threadmills.

 

Bruce

[Slepydremr]

I prefer multi-tooth tools over single-point, as long as you can get the reach you require. The only downside is requiring different tools for different pitches. Where a single point tool could do multiple threads but will require more passes.

[strabe]

^^^^^+1^^^^^ I love multi tooth thread mills.