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How best to drill through bolt in Stihl hedgecutter head?

Cordata

By Cordata,
in Maintenance help

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aspenarb
aspenarb

Drilling/helicoiling is ok if you take your time and set up properly and put a bit of thought into it, stabbing away with a drill will end in tears. The drill will need a guide bush if in a blind hole

aspenarb
aspenarb

If you are drilling and have access to a lathe @openspaceman was on the money with a drilling bush, next best thing are these two bob hole transfer punches, a bit of a life save if you want to centre

Cordata
Cordata

So I didn't read this thread until now, having already tried the carbide bit this afternoon   It did exactly what you said here, and to my surprise the bolt almost instantly flew out the thr

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spudulike Grand Master

spudulike

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Posted
20 hours ago, Cordata said:

 

 

So I didn't read this thread until now, having already tried the carbide bit this afternoon

 

It did exactly what you said here, and to my surprise the bolt almost instantly flew out the threaded hole - no need for bolt extractor at all!

Just experience, it often happens on screws that are clean like this. Good job 

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