![]() We have tried anything in between S3555 and S300, thinking that might help. The recommended RPM for a Balax M2 is S3555. The speeds and feeds in this code are generic. So it is not just that individual mill that can't tap. Additionally, most of the parts have M3 STI holes in them that we cut tap. These parts run in multiple locations throughout the shop. Some have may six M3 holes, some may have fifty eight M2 holes and eighteen M2.5 holes. This is a package of parts that gets assembled by our customer. So the breakage is likely related to the tap diameter. As the taps increase in size, the tap breakage is less often. Mostly we cut tap or thread mill on parts for other customers. M2, M2.5, and M3 are the only 3 form taps we are struggling with for this customer. Thanks everyone! A lot of great stuff here! Any help or advise would be appreciated, Thanks Maybe there's something I just don't know about. Maybe there's something simple that I just haven't thought of. And some other off-brand, thick as molasses, tapping compound. ![]() We've tried Tap Magic for aluminum - comes in a red/white spray can and is supposed to be cinnamon scented. I'm not a fan of the coolant, but there's no getting away from it. The coolant we use is a local brand I think, AFT (Advanced Fluid Technology) 619M2. We have purchased an Emuge Softsynchro high performance tap holder. Probably another 5 or 6 brands that I can't remember. Using appropriate size solid carbide drills - 118° drill tipįormula for determining appropriate drill size for 75% metric threads: Tap O.D. The forming tap, running at the same surface speed, spindle speed of 307 rpm, and feed of 460 mm/min, produced 6240 threads at a cost per hole of 0.01. Spotting with a 1/4" x 120° NC spot drill The cutting tap could produce an estimated 2281 threads at surface speed of 10 m/min, spindle speed of 322 rpm, and feed of 483 mm/min for a cost per hole of 0.02. Tapping retract is set at 4, but we've tried both slower and faster ![]() Torque specs for the assembly screws are mandated by our customer's customer.Ģ015 Haas VF-4SS. Form taps and thread percentage is mandated by our customer. Trying a drill the next size up drops the thread percentage causing ripped threads at assembly. 5 holes in aluminum with 75% thread percentage. Join us today and gain access to the top catalogue of web blanks.Long time Forum reader, first time poster. There are already over 3 million customers taking advantage of our unique catalogue of legal documents.
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