Step by Step Trueing Guide

+ GIDCO-Foulkes Trueing Tools on Resin Bond Diamond and CBN wheels.

Step1: Place trueing tool in holder. Expose not more than 1/2" of trueing tool (on radius dresser more is allowed).

Step 2: Turn off work light to better observe active sparking interface. Turn off coolant.

Step 3: Set up feed (tool travel) to move at a moderate to fast speed. An active sparking interface is the desired effect. Excessive tool wear will be the result of a slow feed setting.

Step 4: Set up downfeed using the chart below. Correct downfeed is determined by the hardness and grit size of the wheel. It is important to note at this point that more is better when it comes to calculating the downfeed of the wheel to be trued. DO NOT "Baby" the tool! Cautious downfeeding of the wheel to be trued will simply wear away the trueing tool with no positive effect on the diamond or CBN wheel.

Maximum downfeed (or infeed)
100 grit (FEPA 181) or coarser............................................................ .004"
180 to 280 grit (FEPA 91 to 64) ......................................................... .003"
320 grit (FEPA 54) and finer .............................................................. .002"

Step 5: Allow GIDCO-Foulkes Trueing Tool to make several passes (2-3) at this position. (Trueing in one direction will only leave a crown on the wheel.)

Step 6: Reduce the downfeed of the wheel with each set of 3 passes across the wheel, for example by going from .001 - to .0005- and then to .0002 until the wheel is trued. A wheel trued in this manner will exhibit excellent cutting action on workpieces and leave a correct surface finish (in accordance with the grit size of diamond or CBN wheel).

+ Centerless Wheels