[Jewelry making - Article 00272] - Re: [Orchid] Slow drilling using a flex shaft

[Lois Martens]

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>     I get the best results from using a spindle speed of just hundreds
>     of RPM, not tens of thousands.

    I totally agree. Low rpms, relieving pressure frequently and a
    lubricant (I use wax) are the efficient way to use drills and burrs
    for me. The cutting edge needs time to cut the metal and discard it.
    Also you generate less heat. Generally it is no problem if the metal
    heats up but high heat is very distructive for drills and burrs. 

Lois
www.loismartens.com
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