General Category > General Discussion

New bee from Warwickshire UK

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tinyjames:
Haha I've found the video with regards to cooling chisels.

https://www.youtube.com/watch?v=VhuGl7n-bNY

he talks about it at around 24 min into the video

James

BrianH:
Ive not seen the video but believe the info mentioned to be correct. You cannot.....in effect... reach a high enough temperature while grinding to harm high speed steel but you can, in theory, create the minute fractures mentioned by quenching it while hot. So NEVER quench HSS tools.
Tools made of high carbon steel, on the other hand, need to be kept cool so regular water dipping is essential.
Brian

Derek:
You should never hold the chisel on the wheel so lang as to get it too hot light short grinds is all that is needed if just reinstating a sharp edge. Even if reshaping the same applies but

Wood spinner:
I have used the water cooling method for years and never had a problem
I don't grind until the tool tip is glowing red hot
Grind for a small time and cool and repeat

I also don't own a microscope to see micro cracks

As said it works for me if you are cautious and don't over heat the tip

Bill21:
Yes agreed, water cooling between visits to the wheel is fine provided you don’t get the tip too hot. Frequent dips into the cooling pot is the way to go.

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