Barranca Diamond CAB COMBO WORKSHOP - Manual (Page 19)

19
mount can be adjusted by loosening the positioning bolt (fig 33), moving the tool rest to the desired
height and distance from the wheel, and then retightening the positioning bolt. The tool rest can also
be completely removed (fig 34) from the Cab Combo Workshop if the operator desires.
Fig 32 - Tool rests Fig 33 - Tool rest positioning bolt Fig 34 - Grinding with tool rest
removed
Rough shaping of the gemstone material should be performed first with the 80-grit wheel with maxi-
mum water flow from the hood mounted water control valve. It is recommended that you only pump
clean water to the Cab Combo Workshop water system and never recycle your drain water back to
your grinding wheels or expandable drum.
Due to the steel alloy construction and brazed nickel diamond bounding of both wheels, a “ringing"
noise will be heard during grinding and sanding. This is normal and should be of no concern. Should
coolant/flushing water flow be interrupted while grinding with the brazed diamond wheels, the diamond
may “glaze over" or dull the diamond bond. The diamond bond can be “dressed open" or sharpened
by taking the green carbide stick and lightly touching it to the diamond grinding face of the wheel while
rotating (fig 35). Only apply a slight pressure - for no more than 2 seconds - with full flow of cooling
water when “dressing open" the wheels. Do not oversharpen as the wheel life will be shortened.
Always ensure there is a clear, constant drip of water flowing off the rotating wheels into the reservoir
tank. Additionally, don’t force the gemstone material while grinding with the diamond wheel. Allow the
diamond bond on the wheel to work smoothly with a constant and steady application of hand pressure.
Rotate your gemstone while grinding to uniformly remove material, nicks and flat spots.
Remember, satisfactory results are dependent on the user's skill and experience, as well as the gem-
stone and equipment being used.
CAB COMBO WORKSHOP OPERATION AND ADJuSTMENT