The correct slugbuster unit arrived from RS yesterday and I purchased 6mm and 10mm twist drills today to create the hole through which the unit passes. On a scrap piece of 2 inch aluminium angle gripped in the steel jaws of a hobby vice I used a power drill to initially drill a 1mm hole in a punched centre, then opened this out to 6mm and then 10mm, see http://www.youtube.com/watch?v=e7G36dZgS5k&feature=youtu.be
There was little precision in the preparation for this test hole but the slugbuster worked perfectly and the EM gauge society dowels are a precision fit in the 25.4mm hole created.
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