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Tree Care Forums
Milling & Saw Mills
Best combo bar/chain for alaskan mill?
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<blockquote data-quote="BobL" data-source="post: 2328639" data-attributes="member: 14206"><p>If the drill is skating I guess I should ask, did you use a centre punch to indent the bar? You will need a decent quality centre punch , those cheap chinese ones will just flatten out.</p><p></p><p>I use a brand new, decent quality Cobalt drill bit at 160 RPM, water soluble oil as a lube and a lot of firm pressure. A new bit can drill 3-4 bars before it needs attention.</p><p></p><p>If you only have a minimum of 300 rpm then a 1/8" bit will be a better way to start.</p><p></p><p>Tip: drill one side until the bit just breaks through - the drill from the other side or you will get a serious bur that needs to be removed.</p></blockquote><p></p>
[QUOTE="BobL, post: 2328639, member: 14206"] If the drill is skating I guess I should ask, did you use a centre punch to indent the bar? You will need a decent quality centre punch , those cheap chinese ones will just flatten out. I use a brand new, decent quality Cobalt drill bit at 160 RPM, water soluble oil as a lube and a lot of firm pressure. A new bit can drill 3-4 bars before it needs attention. If you only have a minimum of 300 rpm then a 1/8" bit will be a better way to start. Tip: drill one side until the bit just breaks through - the drill from the other side or you will get a serious bur that needs to be removed. [/QUOTE]
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