If the sled is built accurately, and a bowl bit is used, you'll get a surface ready for sanding.
My sled is used to smooth end grain slabs (big cookies) and wild grained woods that a planer would ruin.
For twisted stuff, Gary's sled would give you one flat surface so the other side could be planed.
Loss of wood will be no more than other methods of producing straight, flat stock from rough cut and/or twisted lumber.
Thanks for posting this.
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