Sharpening

Sharpening

This topic has 6 replies, 5 voices, and was last updated 12 September 2017 at 19:51 by Douglas Johnston.

Viewing 7 posts - 1 through 7 (of 7 total)

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12 September 2017 at 15:58 #316713
Alan Gordon 4
Participant
@alangordon4
Hi Folks

I have aquired a boring head with boring bars however thy have been well used and in need of sharpening, I have tried to sharpen on my bench grinder with poor results. Should I be using a different grinding wheel ?
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12 September 2017 at 15:58 #18655
Alan Gordon 4
Participant
@alangordon4
12 September 2017 at 16:10 #316716
richardandtracy
Participant
@richardandtracy
If they are brazed carbide tips, then you'll need a green wheel. If carbide inserts, they are disposable and should be changed. If they're HSS, then you either need to get better at the correct shape (and I am NOT one to talk – I resorted to cheap carbide insert tools from China, I was that good at grinding my own) or hone and maybe polish after grinding.

Regards,

Richard.
12 September 2017 at 16:10 #316717
Brian Sweeting 2
Participant
@briansweeting2
What are the materials of the bars and the wheels, sorry can't see from here.
12 September 2017 at 18:01 #316729
Alan Gordon 4
Participant
@alangordon4
Thanks Chaps

Yes they are brazed carbide tips so it looks like i will invest in a green wheel or convert to inserts.
12 September 2017 at 19:10 #316735
Andrew Tinsley
Participant
@andrewtinsley63637
A green wheel will not give a good enough finish for a really good surface, you will need to hone the cutting edges to get rid of the grinding marks.

Andrew.
12 September 2017 at 19:51 #316740
Douglas Johnston
Participant
@douglasjohnston98463
A diamond wheel is ideal for touching up these carbide tips.

Doug
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