![]() The protrusion of the drill bit beyond the chuck has to be set by a Gauge, there is a graduated bar behind and below the chuck though it's purpose is at the moment unclear. I await a reply as to wether A is possible or if brierley can offer any help with a sketch or drawing with plan B. My only option is to A) try to adapt a cam from the later ZB25 or B) make one from scratch. Though my machine shows little wear it's an early model for which no spares are available. Hi Chris, I have been intouch with Brierley/chester. I have a Brierley supplied cutter grinder (American made "Cuttermaster" I have seen You Tube operating instructions / Demonstrations for my machine. Does anybody know anything about these machines ? Noel. The manuals are available at a big price. The motor/grinder is moved by a lever and the 4jaw chuck would seem good for about 16mm. I think it may be a ZB 11 but can find no numbers. At long last I've got my hands on a brierley drill grinder.
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