Model Engineers Workshop Issue 168. Included in this months Model Engineers' Workshop Issue 168: ON THE EDITOR’S BENCHDave Clark’s commentary.SMALL BORING TOOLS & OTHERSHarold Hall describes his smallhole boring system.TRADE COUNTERMICROMETER DOWN FEED FORTHE HOBBYMAT MILL/DRILL QUILLJim Whetren adds another improvementto his Hobbymat mill.ADDING A CAPSTAN ATTACHMENTTO THE CHIPMASTERDave Fenner adds a multi-tool turretto his lathe.HIGH SPEED SCREWCUTTINGATTACHMENTBill Leslie describes an essential add-on.CHEMICAL BLACKING OF METALTerry Owens looks at componentfi nishing.A BOXFORD SADDLE STOPWITH READOUTGeoff Josey adds a digital readout.LATHE WORK, A BEGINNERS’ COURSEDon Brymer looks at lathe workholding methods.ELECTRICAL DISCHARGEMACHININGChris Walter makes a small sparkerosion machine SCREW THREADS OF THE WORLDUNITE (IF ALL GOES TO PLAN!) Martin Gearing offers an explanationwith suggested alternatives.IMPROVEMENTS TO A 12in.TAIWANESE CROSS SLIDE‘LATHEWORKS’ adds oilers anda felt wiper to his lathe.FACED WITH A BORING PROBLEMTed Barclay used his head.SCRIBE A LINELetters from readers