There are also several factors to be considered when choosing the proper RPM and feedrate.The feed rate used depends upon a variety of factors, including power and rigidity of the machine, rigidity of part hold-down, spindle horsepower, depth and width of cut, sharpness of cutting tool, design and type of cutter, and the material being cut.To obtain the optimum Chipload, you must consider these variables, along with the machine and materials you intend to cut. If we plug in our known variables we get: 0.01 x0.25 x2 x18000 = FeedRate = 90ipm. Ryan recently served as Assembly Team Faculty Advisor for Team Capitol dc's entry into the 2013 Solar Decathlon. For small bits below 1/8 inch start with 0.005 and increase from it there. Then decrease speed by 10%. Feeds; Speeds; Grades. The rim speed difference at equalRPMs is more than twice that for the 3.5-inch bit than the 1.5-inch one! We mainly sell to U.S. rather than to buy there: Of course here inch collets are also available (for both trim router (UK version) and ER spindles) for those who want to use milling bits from the USA, but its not that common. Whiteside Machine Company by cconway Sat Oct 06, 2018 4:25 pm, Post Its simply too much couterforce with such a large diameter bit for the weak motor, at least when you try to do deep pockets. I would suspect that any bit larger than 1/4 at the head is going to give the makita issues in the long run. Agree with above. Start off using an RPM derived for the chip load for the material being cut (see charts). Usually a depth of cut that equals the radius of the cutter is a good starting point when cutting non-ferrous metals. CHAPTER 1. It is very sharp, easy to predict and extremely smooth. x 20,000 rpm = 188,490 in/min. I am assuming this is 1/4 shank so max doc should be .25. Great video. Kit includes the fly cutter body, tool bar, two general purpose carbide inserts, two polished carbide inserts for aluminum machining . The superior quality, made in America mark and carbide construction gives you a clean cut and smoothness.
