Determine how much of your blade or crack chasing wheel you want to show outside the Dust Muzzle and make a mark on the Dust Muzzle. This will determine how deep your blade will cut.
Using either a stationary disc sander or a belt sander with 60 grit abrasive, grind off the nose of the Dust Muzzle to the marks you have made. When you have finished, there will be a flat spot on the Dust Muzzle.
Attach the Dust Muzzle to the grinder with the hose clamp as per the instructions. Make sure the cover plate is trimmed to match the cut you have made on the Dust Muzzle. Snap the cover plate onto the Dust Muzzle and check that the blade or crack chaser is located in the center of the Dust Muzzle.
Insert the step-down hose into the Dust Muzzle exhaust port and attach the large end of the hose to your vacuum hose.You are now ready to begin dustless cutting and crack chasing and tuck pointing with the Dust Muzzle.The Dust Muzzle/Crack chaser will also act as a depth-of-cut guide. If the Dust Muzzle is trimmed to show ½” of blade, it will cut no deeper than ½”.