Guineafowl
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Over on another forum:
Discussion about a 12mm jobber drill being too long and vibrating, various suggestions of centre drills, spot drills, blacksmith ones etc. Someone suggested drilling up to size on steps.
After getting tips from Kurtis at CEE, I now drill a pilot the size of the main drill’s chisel bit/web, then go straight in to size. Saves faffing. Put up this video (8mins in relevant bit):
^This was described as ‘how not to do everything’. Quite surprising, as I thought Kurtis was very competent and well regarded, particularly on here.
Large drill bits - why so long?
Hi - I've been doing some drilling into steel with a 12mm hss bit, and of course it vibrated like anything - because it's 15cm long! Why? How many users are going to need to drill through 10cm of metal?! Very few, I bet. For the vast majority (correct me if I'm wrong), 99% of holes over about...
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Discussion about a 12mm jobber drill being too long and vibrating, various suggestions of centre drills, spot drills, blacksmith ones etc. Someone suggested drilling up to size on steps.
After getting tips from Kurtis at CEE, I now drill a pilot the size of the main drill’s chisel bit/web, then go straight in to size. Saves faffing. Put up this video (8mins in relevant bit):
^This was described as ‘how not to do everything’. Quite surprising, as I thought Kurtis was very competent and well regarded, particularly on here.