04-17-2016, 07:28 AM
aRM,
The ADMT120412R-F56 in grade WKP35 is a 12mm insert that won't fit in a cutter made for 10mm inserts, so don't jump on those. The older grade WKP35 isn't going to work as well in stainless steels as it's successor WKP35S, though neither is the primary grade for austenitic (non magnetic) stainless steels. The would work fine in the ferritic/martenisitic and precipitation hardening stainless steels such as our desinations 410, 416, 420, 440C, 15-5PH, 17-4PH and so on.
You are correct that there is no 25mm cutter with reduced shank. We have the same issue with "inch" bodies over here so I've been known to take the larger tool and turn down the shanks. It's something you have to be careful doing or you can ruin a perfectly good, very expensive tool. A before & after example:
![[Image: IMG_2453-r_zps182fe5fe.jpg]](http://img.photobucket.com/albums/v466/kenm10759/Dads%20shop/IMG_2453-r_zps182fe5fe.jpg)
I might suggest just starting with the standard 20mm tool and the ADMT10T308R-F56 in the grade WKP35S or WSM35S. BTW, unless you need the very long cylindrical shank of the "Z20" version, the right tool would be F4042R.W20.020.Z03.10, as that's the shorter Weldon shank version.
The ADMT120412R-F56 in grade WKP35 is a 12mm insert that won't fit in a cutter made for 10mm inserts, so don't jump on those. The older grade WKP35 isn't going to work as well in stainless steels as it's successor WKP35S, though neither is the primary grade for austenitic (non magnetic) stainless steels. The would work fine in the ferritic/martenisitic and precipitation hardening stainless steels such as our desinations 410, 416, 420, 440C, 15-5PH, 17-4PH and so on.
You are correct that there is no 25mm cutter with reduced shank. We have the same issue with "inch" bodies over here so I've been known to take the larger tool and turn down the shanks. It's something you have to be careful doing or you can ruin a perfectly good, very expensive tool. A before & after example:
I might suggest just starting with the standard 20mm tool and the ADMT10T308R-F56 in the grade WKP35S or WSM35S. BTW, unless you need the very long cylindrical shank of the "Z20" version, the right tool would be F4042R.W20.020.Z03.10, as that's the shorter Weldon shank version.