Sure, here's a couple:
www.ibiblio.org/twa/info/drillSpeedChart.pdf (pdf warning)
http://www.woodcraft.com/Articles/Articles.aspx?articleid80 (chart in
right sidebar about 1/2 way down the page)
Often wrong, never in doubt.
Larry Wasserman - Baltimore Maryland - lwasserm(a)sdf. lonestar. org
Perhaps on hard and resin wood (maple is sugar) use the peck mode
And let the cutting flange cool.
Martin H. Eastburn
@ home at Lions' Lair with our computer lionslair at consolidated dot net
"Our Republic and the Press will Rise or Fall Together": Joseph Pulitzer
TSRA: Endowed; NRA LOH & Patron Member, Golden Eagle, Patriot's Medal.
NRA Second Amendment Task Force Originator & Charter Founder
IHMSA and NRA Metallic Silhouette maker & member. http://lufkinced.com /
On 9/4/2010 8:01 AM, Larry W wrote:
Nope. I have a boat-load of Ash (probably 300bf left of 600) and have never
had that problem with drill bits. Sometimes I'll see a burn mark from a saw
blade but never smoking drills. It is hard stuff, though.
Wow, I just realized how deep you are drilling. Drilling that deep in hard
stuff would be bound to heat the bit.
Try a closely directed stream of compressed air on the bit. Cool that
sucker with air, and slow down the drilling process if the burning is
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