Re: [CAD_CAM_EDM_DRO] Re: Slot drills
Posted by
JanRwl@A...
on 2001-11-17 19:06:35 UTC
I know the difference between a "center-cutting" end-mill and one that's not,
and a two-flute and four-flute. But I never heard 'slot drill', before.
I bought 100 PCB-drill- bits (solid-carbide, of course) on e-bay for a very
low price, and was a bit surprised when they arrived: They are clearly
spiral "up-cutting" two-flue mill-bits, with a 140° center-cutting tip, much
like a drill-bit, only "flatter". They drill into FR-4 (that's PCB
fiber-glass epoxy, to those of you who don't know), and can "mill" sideways
very well, like a "router-bit", if turning over 3000 RPM, that is! So, they
are TRULY "slot-cutting drills". They work excellently on aluminum-sheet,
being two-flute. One lives and learns...
and a two-flute and four-flute. But I never heard 'slot drill', before.
I bought 100 PCB-drill- bits (solid-carbide, of course) on e-bay for a very
low price, and was a bit surprised when they arrived: They are clearly
spiral "up-cutting" two-flue mill-bits, with a 140° center-cutting tip, much
like a drill-bit, only "flatter". They drill into FR-4 (that's PCB
fiber-glass epoxy, to those of you who don't know), and can "mill" sideways
very well, like a "router-bit", if turning over 3000 RPM, that is! So, they
are TRULY "slot-cutting drills". They work excellently on aluminum-sheet,
being two-flute. One lives and learns...
Discussion Thread
dan.eaton@c...
2001-11-17 12:10:38 UTC
Slot drills
Les Newell
2001-11-17 13:12:11 UTC
Re: [CAD_CAM_EDM_DRO] Slot drills
dave_pearson@b...
2001-11-17 13:17:27 UTC
Re: Slot drills
Smoke
2001-11-17 16:43:51 UTC
Re: [CAD_CAM_EDM_DRO] Slot drills
dan.eaton@c...
2001-11-17 17:29:28 UTC
Re: Slot drills
Smoke
2001-11-17 18:41:56 UTC
Re: [CAD_CAM_EDM_DRO] Re: Slot drills
JanRwl@A...
2001-11-17 19:06:35 UTC
Re: [CAD_CAM_EDM_DRO] Re: Slot drills
William Scalione
2001-11-17 21:07:13 UTC
Re: [CAD_CAM_EDM_DRO] Re: Slot drills
Jon Elson
2001-11-17 21:19:27 UTC
Re: [CAD_CAM_EDM_DRO] Slot drills
Jon Elson
2001-11-17 21:24:10 UTC
Re: [CAD_CAM_EDM_DRO] Slot drills
Les Newell
2001-11-17 23:21:21 UTC
Re: [CAD_CAM_EDM_DRO] Re: Slot drills
JanRwl@A...
2001-11-18 18:34:35 UTC
Re: [CAD_CAM_EDM_DRO] Re: Slot drills
William Scalione
2001-11-19 04:46:21 UTC
Re: [CAD_CAM_EDM_DRO] Re: Slot drills
Peter Homann
2001-11-28 16:12:44 UTC
GE 1/6 HP motor wiring Problem.