My tool guy brought by some 1/4-20 and 10-24 thread forming taps from OSG. I believe they are TiAN Cobalt Hypro froming taps. My question is do I use the same speeds and feeds as I normally would for a regular tap or are thier special speeds and feeds. I will be cutting 6061 aluminumm .5" to 1" deep. Any help will be greatly appreciated.

Use the same speeds and feeds . Just your tap drill size will change.

Faster, at least double. Thats the beauty, they are FAST, no chips and a stronger thread.

Thanks

little bubba what are you doubling

normally I tap 1/4-20 at 183.35 IPM and 3667 RPMs

Use the same speeds and feeds . Just your tap drill size will change.

I just purchased several thread forming taps but can't find a drill size chart for the taps. Any idea where one mind find that info?

Also, what about an RPM recommendation per tap size?

Here is an Awesome site. you can find what you are looking for here :
http://www.carbidedepot.com/resources.htm

Great site rmarch lots of stuf without all the fine print to read in machinest handbook .
Tazer are you taping with a ridged tap machine Im old school with a old machine and The RT machines dont realy get up to speed in the short distance in Z so I wonder how fast the tap is realy spining Be interisting to speed gun the spindel and see what it is realy doing Kevin