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« on: 13 May 2013, 11:22:14 am »
Your fears are my fears, one hex bolt snapped off in my case and oh crap, STOP! before digging yourself into a bigger hole. Plan and be patient I'm telling myself.
Yes, the header bolts potentially snapping - what a fuck off that'd be.
In the drilling dept, perhaps some drilling lube could help out giving sufficient time out for cooling and more lube, 3-4 seconds at a time to be safe and sure. The drilling lube will help the bit to be far more efficient at cutting.