Hand Sanding Heat Question

i4Marc

i4Marc

Joined
Oct 19, 2011
Messages
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Is it possible to ruin the temper of a blade you're hand sanding due to the heat generated?
 
I very seriously doubt it... You'd have to heat the blade to 400ºF+

I don't know about you but I can't hand-sand that fast!
 
I thought the risk was negligible at best but I figured I'd ask anyway. The blade gets pretty warm from sanding.
 
I have had some knives and parts get hot with filing and hand sanding but nothing to worry about. I use WD40 when I hand sand and haven't gotten my blades hot since. ( But that isn't the reason I started using it though ).
 
I normally use a mixture of water and a drop or two of detergent when I'm hand sanding. I find wet sanding increases the life of the paper as it doesn't load up as much... I also like the fact that there's no dust so I can avoid wearing the respirator for that operation.
 
It would burn your fingers long before burning the temper. Go to town, and remember to clear the swarf and grit frequently. I use one of the abrasive belt cleaning sticks (cheap, and super handy for extending the life of belts that are just loaded with gummy material) when the sandpaper loads up more than a quick brushing can clear.
 
I generally sand with WD40 and wipe the swarf away frequently. But sometimes with a stubborn scratch I sand dry because it removes material more aggressively. But it gets a little hot. So I was just curious if it was anything to be concerned about.
 
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