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Anunnaki

How to Drill Square Holes

http://www.gizmodo.com.au/2011/10...gical-machine-drill-square-holes/

Gareth

Great if you have a 10k plus CNC milling machine to use it in ....... it's gonna be a good few years before one of those weighs in at less than 100 and is suitable for use in a bench mounted pillar drill.
sod

Great thing would love one. I think the comment made that they had one in their school workshop might have been for wood and have been around for ever  
Gareth

Square cutting Mortice bits for woodworking have been around for a long time, but the none-industrial ones have a bit of a bad rep.
Slipster

just browsing through old threads.
Gareth is this idea based on an offset (cam arrangement) 3 sided drill bit ? cant see the relevence of a cnc machine surely any milling machine / good pillar drill would do the same job

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