resharpening tool bits
- Thread starter desi2960
- Start date
For me, the green wheel at the tool sharpening place.
You should have seen the first and last one I tried sharpening on my wheel.
I will most likely do some again until I get good at it.
You should have seen the first and last one I tried sharpening on my wheel.
I will most likely do some again until I get good at it.
Green wheels are Carborundum, which is for sharpening carbide only.
If you are using HSS or Cobalt tools, use the gray wheel,,,,,,,,,,,course grit for fast removal, fine grit for smooth cutting edges. Smooth cutting edges hold up longer.
If you are using HSS or Cobalt tools, use the gray wheel,,,,,,,,,,,course grit for fast removal, fine grit for smooth cutting edges. Smooth cutting edges hold up longer.
Make sure the wheels are resurfaced too,bad wheels ruin good tools quick as shit.
I also agree 100%,gray=HSS and green=carbide.
Keep a container of water close to the grinder too,whatever tool you are grinding HAS to be kept cool,for a couple reasons.
HSS changes temper,and therefore cutting characteristics if you let it get hot enough to turn blue. It should be at worst a light straw brown on the ground surface. This will present itself when the tool is good and sharp for the first 3-4 cuts then ruins whatever you're cutting because it went dull too quick.
This isn't as important with carbide IMO,but can still make a difference.
It's also REALLY important to keep it cool because trying to hold a hot cutter SUCKS. The wheel will cut a little better when the edge is wet too. Tommy D.
I also agree 100%,gray=HSS and green=carbide.
Keep a container of water close to the grinder too,whatever tool you are grinding HAS to be kept cool,for a couple reasons.
HSS changes temper,and therefore cutting characteristics if you let it get hot enough to turn blue. It should be at worst a light straw brown on the ground surface. This will present itself when the tool is good and sharp for the first 3-4 cuts then ruins whatever you're cutting because it went dull too quick.
This isn't as important with carbide IMO,but can still make a difference.
It's also REALLY important to keep it cool because trying to hold a hot cutter SUCKS. The wheel will cut a little better when the edge is wet too. Tommy D.
If you want to Sharpen carbide, use diamond wheels.
In reality, the green wheels are junk and will micro chip the cutting edge.
For HSS use the grey as suggested, but I find the white wheels to be a far better wheel.
You can also use the Blue seeded gel wheels for HSS tools.
The biggest mistake I see people make when sharpening tools is being in a hurry and burning the steel. A very good quality HSS can handle getting to dull red hot and not loose it's hardness. Most of the cheaper hss that does not have Cobalt can not be heated beyond 400c ,or else it looses it's hardness .
WKE 45 is one of the grades I like.
Neil
In reality, the green wheels are junk and will micro chip the cutting edge.
For HSS use the grey as suggested, but I find the white wheels to be a far better wheel.
You can also use the Blue seeded gel wheels for HSS tools.
The biggest mistake I see people make when sharpening tools is being in a hurry and burning the steel. A very good quality HSS can handle getting to dull red hot and not loose it's hardness. Most of the cheaper hss that does not have Cobalt can not be heated beyond 400c ,or else it looses it's hardness .
WKE 45 is one of the grades I like.
Neil
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