Which Boring Bar?

[martik777]

I use these holders and inserts in a semi -production shop with 1144 and 4140 steel - no issues. Buy the whole set or as needed 10mm or 12mm shafts: (and get a box of each type of insert)

Machifit 7pcs 10mm Shank Lathe Turning Tool Holder Boring Bar With Carbide Inserts

Only US$37.99, buy best Machifit 7pcs 10mm Shank Lathe Turning Tool Holder Boring Bar With Carbide Inserts sale online store at wholesale price.

www.banggood.com

I now only use HSS for form tools or special setups

When I need to bore less than 3/8" I use a 4 or 5mm carbide endmill

 

[neilking]

I've had pretty good luck with the cheap braised carbide boring bars. They work really well on aluminum but have to take pretty light cuts on steel

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[neilking]

Used it to make a bearing removal/install tool and to make a new bearing

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[neilking]

I'm not really disagreeing with anyone because I don't enough.

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