BW> Anybody know how to cut or otherwise wind up with a tapered,
BW>semi-circular cross-section trough in a 3 foot length of wood? I want to ma
BW>two of these to glue up to obtain a tapered hole through what will later be
BW>turned round.
I'd use a router and a shopmade jig. The jig would consist of a
base and two sides sloped to yield the desired taper over the 3
foot length of the blank. A blank that had been sawed in half
along its long axis would be clamped into the jig so that as the
router rides up the sloping sides it will make an ever shallower
cut. A cove bit with the diameter of the maximum desired bore
radius should do the trick.
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* QMPro 1.01 ******* * H2O is hot water and CO2 is cold water.
>BW> Anybody know how to cut or otherwise wind up with a tapered,
>BW>semi-circular cross-section trough in a 3 foot length of wood? I want to ma
>BW>two of these to glue up to obtain a tapered hole through what will later be
>BW>turned round.
>I'd use a router and a shopmade jig. The jig would consist of a
>base and two sides sloped to yield the desired taper over the 3
>foot length of the blank. A blank that had been sawed in half
>along its long axis would be clamped into the jig so that as the
>router rides up the sloping sides it will make an ever shallower
>cut. A cove bit with the diameter of the maximum desired bore
>radius should do the trick.
That'll work pretty well with the use of a homemade reamer, which someone else
suggested, but I think you mean to use a core box bit with no more than the
minimum diameter of the U -- otherwise, the cross section of the small end
would have too large a radius.
Thanks,
Bill Willis