The Mira Bit is designed for milling model wax on 5-Axis NS CNC Milling Machines. The bit has a special tapered shape with an extremely tiny tip and parameters that allow it to work for up to one year without a change. The milling cutter can cut very small relief details with a resolution of up to 0.3 microns. The geometry of the bit allows milling to a depth of 26 mm without rough milling. The Mira Bit is one of a kind in the model wax milling market.
The history of the Mira Bit has been in the making for more than 15 years. Its design has evolved and improved along with CNC milling technology in the jewelry business. Traditional tapered cutters have been used for 3 and 4 axis CNC wax milling for a very long time. For such milling bits, a cutting length of up to 10 mm is used. This is more than enough for simple flat reliefs in jewelry modeling.
But since the advent of 5 axis machines for jewelry wax milling, the question arose that the cutting length should be longer. Wax models became more and more complicated and faster milling times were required. Since the workpiece, during 5 axis milling, rotates through large angles and in different directions, milling bits with a length of first 12 mm, and then 19 mm began to appear on the market.
NS CNC, being a leader in the production of 5 axis CNC machines for jewelers, began the research and development of a milling bit even longer, up to 26 mm. The manufacturing of such bits should have a spherical shape and a diameter of 0.1 mm, in this case, the run out of the tip should be limited to 1 micron or less
NS CNC offers its customers two tapered milling bits for wax. The standard “Mira Bit” and an additional specialty milling bit, the “Mira Bit X”. The standard milling bit is applied to all of your basic daily jobs. The Mira Bit X is used specifically for special work and by advanced users only. The Mira Bit X must be installed with the High Precision collet of AA Series. Read more about NSK Collets
Shape: Spyral Pyramid
Shank: 3.175 mm (1/8 “)
Sided Angle: 5.0 Degrees
Full Angle: 10.0 Degrees
Tip: Spherical
Tip Diameter: 0.10 mm (0.004”)
Сutting Length: 26 mm (1”)
Overall Length: 52 mm (2.00″)
Stick Out Max: 35 mm (1.34″)
Flute: 2
Material Fabrication: Solid Carbide
Runout at the end: Less than 1 micron
Country of Origin: United States
Shape: Spyral Pyramid
Shank: 3.175 mm (1/8 “)
Sided Angle: 5.0 Degrees
Full Angle: 10.0 Degrees
Tip: Spherical
Tip Diameter: 0.07 mm (0.003”)
Сutting Length: 26 mm (1”)
Overall Length: 65 mm (2.56″)
Stick Out Max: 52 mm (2.00″)
Flute: 2
Material Fabrication: Solid Carbide
Runout at the end: Less than 1 micron
Country of Origin: United States