This cutter bores an exact 20mm hole as required by the Parf Guide System. The distinctive design ensures an exceptionally clean hole. This bit will help you produce dozens of Parf Guide bench tops. It has tungsten carbide tips for a long lasting working life. The cutting head has a sharp pointed 3mm guide pin to locate in the pilot hole. This leading spike helps to keep it running true through the pilot holes. Twin spurs cut clean entry and exit holes. The main cutting edges remove the waste and their angle produces a shear cutting action at the sides. This action ensures the sides of the hole are a clean and snug fit for the Parf Dogs. Precision grinding of the round part of the shank guarantees an exact fit in the guide bush of the Parf Guide Block. The top of the shank is 1/4" hex universal fitting suitable for all 1/4" hex quick change systems including the Festool CENTROTEC. This feature greatly simplifies the process of moving the Parf Guide Block from one hole to the next. Importantly, it prevents the shank becoming burred by a drill chuck. Any such burrs could cause a problem when inserting the shank into the guide bush.
10 February 2018
Parf Dog Drill Bit and Drill StopI purchased the Parf set for layout and drilling MFT style holes in a worktop. Generally, it performed as advertised. The drill stop collar, however, was a disappointment; it was shipped with a slotted set screw, and would only remain in place for one or two drilled holes, allowing the drill bit to fall through the workpiece and hit my concrete basement floor several times. I'm not sure why the slotted setscrew, when hex drive setscrews are much more effective. Also, consideration should be made for milling a flat along the drill shaft to provide even more purchasing power.
26 January 2017
Missing hex wrenchMy cutter just arrived today 26-01-2017 and was disappointed to find Axminster do not include a hex wrench in order to tighten the depth stop collar.