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Twist Drill Sharpening

Drilling holes is one the most essential engineering tasks, the following details my techniques for sharpening drills and drilling hard metals. Drills: types Drills: types High carbon steel—affected by heat and useless for hard metals, cheap and used for soft materials e.g. wood aluminium etc.. HSS—easily sharpened Tin—HSS coated with titanium nitride the main purposes […]

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Modifying the Weiler 56490 Mandrel

By modifying  Weiler 56490 with the addition of a male M6 extension enables a flap wheel to be fitted .  The shank inserts into a die grinder chuck that accepts 1/4″ or 6.3 mm stem or shaft sizes – This 20mm extended shaft by enables abrasive flap wheels 20 mm to 60 mm diameter to be mounted. The Pros…….. […]

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Small Bore 22 mm to 28 mm core drill for deep holes

Working on a Small Bore 22 mm to 28 mm core drill for deep holes > 600 mm. I made one for a customer who was pleased with it, so I decided to offer this on ebay as a made to order. This adaption is for a SDS plus drill other options could be considered. The length is made up using extensions in M12 Studding or Threaded rod. These have brazed nuts on each end to act as back stops.

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Making an Adaptor in EN24T steel

Making an adaptor for a special tool

Been cutting my way through a piece of EN24T Steel to make a part, This feels a bit like sculpturing and as Michelangelo once said: Every block of stone/steel has a statue/part inside it and it is the task of the sculptor/angle grinder machinist to discover it.