I have recently been having problems countersinking in 1/16th inch aluminum plate.
I am using a drill press. Instead of a nice round hole, I am getting a sort of hexagon shape.
I am using five edge countersink made by the Severance company.
I do not remember this sort of thing happening before.
Try a single hole type countersink
As Tom said, a single hole countersink may help. I much prefer them to the multiblade countersinks. I also find countersinks prone to chatter unless the speed is right. I usually end up slowing the speed when I get buggered up holes. Could the countersink be dull?
Peter
What's a single hole cutter? Is this a cutter with a single cutting flute ??
single hole single hole single hole single hole
Single flute?
Way slow, and use soap or paraffin to lubricate the countersink.
LLoyd
Lower the spindle speed.
Jim
It's a cutter with a hole drilled through at at a diagonal creating, in effect, a single flute cutter. Look in the upper right of the first page and you'll see an example.
Or increase the feed. Or use a single flute cutter.
Or use a piloted countersink.
John Martin
Thanks Peter
Thank you all for your suggestions. Will slow down, keep the pressure up and see if that improves before purchasing a single flute style.
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