occurs in the depicted example this particular gear ratio is not considered limiting and it will be appreciated that other gear ratios may be used depending on the cutting application as shown in fig1 the gear box 25 may be used to allow the blade 30 to rotate on a different axis than the axis of the motor 39 s drive shaft this axis may be parallel to the drive shaft 21 or at angle as shown in the depicted embodiment the gear box 25 creates a 90 u00b0 angle between the drive shaft axis d and the blade axis b this particular angle however is not considered limiting and the relative angle between blade axis b and drive axis d may vary depending on the location of the cutter 10 relative to other components and the material m to be cut blade 30 attaches to a blade shaft 27 that extends outward from gear box 25 along the blade 39 s axis b the blade 30 may be attached to blade shaft 27 in any known manner in the example shown the blade 30 includes key 31 that fits within a keyway 29 formed on blade shaft 27 the blade 30 so connected is rotated by the motor 20 at a selected speed based on the type of material m that is being cut in the example shown the blade 30 is circular having generally circular cutting edge 33 at its radial outward extremity other blade shapes suitable for rotary.