For some while now I have had an idea for a bench top mounted Honing and Lapping Machine. Anyone who has done the odd occasional lapping process will know the process is a bit hit and miss depending on the style of adjustment on the Lap, ie wedge or screw. To date there has never been any calibrated design of adjusting the Lap. A recent experiments carried out by me and others, with a new design of Lap. Has spurred me on to design the tool above. Which in due course I hope to manufacture and write up. Honing again is something that is done in the ME workshop. This usually takes the form of a spring loaded two or three pronged tool. I have never used one of these tools but have seen them on stands at Exhibitions. Being more used to using a Sunnen or Delapena Honing machine I thought the above lapping design could be adapted. While it will require dedicated hones to be made. Each mandrel has a range of bore sizes. The smallest mandrel designed so far will cover bores from 9.5 mm (3/8"