"Gun Feeder" Small Diameter & Deep Hole Gun Drill …
Q9. Is gun drill regrinding possible? Yes, regrinding is possible. Q10. What type of cutting oil should be used? Please use a non-chlorine based cutting oil. Suitable oils include Daphne Marg Plus GD-10 (Idemitsu Kosan). Q11. What is the lifetime of a gun drill?
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