Quote:
Originally Posted by 9dreizig
Harbor Freight
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maybe you missed the part about "thick" steel...???
Use a solid cobalt bit for best results.
TiN is second best but no better than HSS after the TiN (titanium) coating wears off.
Drillco makes a good bit and offers it in all the above variations. They are located in Louisianna.
I would use an American made product .
And, like with many other applications, proper lubrication is key!
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