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Member postings for n l

Here is a list of all the postings n l has made in our forums. Click on a thread name to jump to the thread.

Thread: drilling steel with 230v hand drill
04/08/2013 20:29:09

hi,

Sorry I have been away. I managed to drill/grind it out using friends pillar drill and multiple sharpenings of three carbide tipped drills; then hellicoiled it. Trust me this was most frustrating.

Thank you all for your help and suggestions. I would never have considered using carbide tipped drills, but it works!

Kind regards Nick

02/08/2013 17:43:08

Hi,

I am looking for advice. I am trying to drill out a 12mm diameter bolt that is about 50mm long. I only have a 650W hand drill. I have managed to drill an 8mm hole using a cobalt drill; however I have tried to enlarge the hole using a new cobalt drill, having gone in about 10mm it just does not cut anymore. I have tried my hss drills all are sharp but none are cutting, Whilst drilling I soak the hole in copious amounts of oil, I even resharpened two of my drills and still they do not cut, I have been trying to drill this bolt out for two days. I have filed a flat on an identical bolt so the bolt is not particularly hard. Is it just my hand drill is not slow enough? I just do not know what to do and helpful sugestions will be welcomed.

Regards nick

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