[TheForge] followup on holes in saw blade- broken bolts and left handed drills

[Peter Fels & Phoebe Palmer]

One old time way to cut cast iron is to cut through a 
sacrifice piece of steel on top of the cast...using the 
heat of the steel cut to blow on through the cast iron.
In either case..that'd be a pretty ragged hole to try to 
re-drill.
And you risk cracking the cast.


Andy Gladish wrote:
> I've heard that if a bolt is broken off in a cast iron casting, you can take 
> a torch and blow it out, enough to redrill and tap.
> Always wondered if that was theory or if it really works- tried it once and 
> wasn't successful.
> Andy 
> 
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