Chip out....What happened???

9/2/21, 12:21 PM #1

Barry Irby
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Chip out....What happened???

Barry Irby

I tried to post this yesterday, Thanks for the explanation Ellis.

Making wine rake for friends. Airdried white oak. Planed a piece that had very curly snarly crotch grain. Dewalt two knife lunch box planer. It did reasonably well, better than expected. About thirty minutes later I decided the final thickness should be slightly less and took a light pass. (1/32") Bad tear out. Reversed the piece and took another light pass from the opposite direction. More bad tear out.

What happened? Surface drying? Light pass worse than a heavier pass?

I am going to sand it into submission.

Re: Chip out....What happened???

9/2/21, 4:17 PM #2

1 Keith Newton
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Re: Chip out....What happened???

1 Keith Newton

If you wet the surface, this reduces the density by half, plus the planing takes away the wet wood.

Re: Chip out....What happened???

9/2/21, 4:19 PM #3

Mark Nowicki
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Re: Chip out....What happened???

Mark Nowicki

Are the pieces narrow enough to run them through at an angle?

Re: Chip out....What happened???

9/2/21, 6:46 PM #4

Mark Mandell
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Ditto

Re: Chip out....What happened???

9/2/21, 9:27 PM #5

Barry Irby
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Re: Chip out....What happened???

Barry Irby

Yes, I ran then at as much angle as I could.

Actually, initially I ran them pretty much straight through. What is surprising is the difference between the early passes and the later ones. This stuff was so snarly I doubt there is any real "direction".

Re: Chip out....What happened???

9/2/21, 10:24 PM #6

Jack Dover
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Re: Chip out....What happened???

Jack Dover

Maybe knifes have dulled? Or maybe you've got to the point where grain is too twisted and reversed? Sometimes on figured pieces there are spots where grain is almost vertical, so it's like planing end grain. There was a piece recently with some attractive pattern and my planer couldn't do anything with it. It was more like a chipout rather than tearout — small chunks of wood were knocked out in figured areas. I've pulled a magnifying glass and grain was at about 80 degrees to the surface, so the verdict was that my planer is not designed for that.

Chip out....What happened???

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