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I used a 1/4 inch roundover bit on some reclaimed barn oak and it totally chattered until I reversed the feed direction.
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oscarc535mo ago
Yikes, river's got a point. That's a risky fix for a dull bit.
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river3205mo ago
Reversing the feed direction is just masking the real problem. That bit was probably dull or you were pushing it too fast. Barn oak is full of grit and old metal, it'll wreck an edge fast. You got lucky it worked this time, but it's a good way to snap a bit or ruin your piece. Proper sharp bits and a slower, steady feed in the normal direction would have given a cleaner cut without the risk.
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beth_webb765mo ago
Wait, so you're saying the grit in the wood acts like sandpaper on the bit? That makes sense it would dull so fast. But how slow is "slower" for something like that? Are we talking a crawl, or just not forcing it? And have you found any bits that hold up better to that kind of abuse, or is it just a given you'll be sharpening constantly?
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