Drilling tellurium copper, 145 copper
Drilling tellurium copper, 145 copper
(OP)
Looking for the best method to drill 3/32" diameter hole thru 1.25 length of 3/8"
diameter copper.
I can use the lathe or vertical mill, but not sure on the type of drill or
coolant, or which machine to use, or feeds and speeds.
I have about 200 pieces to drill.
I searched and found many different methods, but I am posting here for other
suggestions.
I found out the hard way, copper is different to drill than steel. 3 broken
drills, no finished pieces.
Thanks,
Larry
diameter copper.
I can use the lathe or vertical mill, but not sure on the type of drill or
coolant, or which machine to use, or feeds and speeds.
I have about 200 pieces to drill.
I searched and found many different methods, but I am posting here for other
suggestions.
I found out the hard way, copper is different to drill than steel. 3 broken
drills, no finished pieces.
Thanks,
Larry





RE: Drilling tellurium copper, 145 copper
Copper is difficult because it is extremely malleable- it will flow around tools if cutting pressures become extreme.
The most basic guidelines would be:
-use SHARP, bright tooling
-if you re-sharpen your tools make sure not to burn them
-LOTS of coolant is required. If your drills are getting warm to the touch, you need more coolant and/or slower feed. Copper will gum up quickly when working temperatures go up.
-split point 118 degree drills are probably your best starting point
You'll have to experiment with speeds and feeds. Because your hole size is so small, you need a lot of RPM.
RE: Drilling tellurium copper, 145 copper
RE: Drilling tellurium copper, 145 copper
be advisable?
Thanks,
Larry
RE: Drilling tellurium copper, 145 copper
RE: Drilling tellurium copper, 145 copper
Like all machining don't over do the surface speed, or push it too hard, if the highspeed breaks down too fast use carbide.
RE: Drilling tellurium copper, 145 copper
Better off asking at practical machinist.
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