an inch off a green maple round

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an inch off a green maple round

Postby soli » April 7th, 2017, 9:58 pm

The round is about 42" diameter, pretty green, felled 6 months ago, not much checking. It's has four piths and some ingrown bark. Big leaf maple, which is soft. Some growth rings are 1/2".

I'd like to crosscut a disc off the end. Any tips on keeping a uniform thickness?
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Re: an inch off a green maple round

Postby PATCsawyer » April 8th, 2017, 3:10 am

Make sure that you and your bucking partner pull straight. Your partner will have a better eye for your pull stroke than you will and vice-versa. A lot of sawyers tend to pull the saw toward their bodies on that back stroke.
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Re: an inch off a green maple round

Postby Jim_Thode » April 8th, 2017, 6:35 am

I can think of a few ideas but first it should be understood that the cut off disk will require some kind of chemical treatment to prevent cracking after it is cut.

As said above, two sayers are good to keep an eye on running the saw straight.

Other ideas:
Cut the section a little over sized and machine to final thickness with a router and framework.

Mark the intended cut line all the way around the perimeter so you have a guide to follow. Maybe masking tape would work.

If single bucking the saw will tend to cut a little to the left, so alternating sides may be needed and you can also use this anomaly to make adjustment if needed throughout the cut. You could likely use this effect if double bucking to make adjustments also. The saw will tend to the left with more down pressure is on the push stroke (as in single bucking) and tend to cut to the right if there is more down pressure on the pull stroke.

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Re: an inch off a green maple round

Postby sumnergeo » April 15th, 2017, 5:14 am

Use the widest saw plate possible; cut it thicker than 1"; anticipate drying effects. To slow the drying, I use kraft paper or plastic bags. Depending on the type of maple, sapwood changes a bunch. If it doesn't split after a couple weeks of slow drying, use a jointer plane to flatten and be patient to let the wood find its new shape.
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Re: an inch off a green maple round

Postby soli » April 15th, 2017, 2:11 pm

Thanks for the tips. Here it is. Measures 42" in the two major directions. The thin lip is exactly 2" thick.

Only 27 growth rings, counted from outer to inner, so tree was maybe 30 years old.

It was under plastic from when we had it felled by a tree company in October until February. March and April its been exposed to the weather, lots of 45F rain, almost daily, but little direct sun. The face has been hosed off uniformly, the color variations are natural. The growth rings in the outer 2" are contiguous all the way around.

I've planed off most of their chainsaw rash with a 3-1/4" Makita power planer with carbide knives. The face is cupped, the center being low by about 1/2" plus the remaining rash.

Initially I was hoping to get two 1" cookies (to end up with two 1/2" to 3/4" cookies after finishing). One with a milled flat and polished face, the other with a raw crosscut face. But I'm chickening out, thinking I ought to play it safe and go for the one 2". Hopefully I can keep the crosscut face flat.

It's all I have left. Before I thought to do anything with the wood, I had gone and split the one round that was below (the tree branched very low). I'll be single bucking it with my 5' lance tooth that has a 7" belly, originally it was a 7 footer.

On second thought, I suppose I could go for 1-1/4" cookie first. It's volume would be about 1 cubic foot, about 35lbs dry, maybe 45lbs wet. That would remove something less than 1-1/2 at the 2" edge, leaving a 1/2 to 5/8" thick edge on the round. A second cookie could still be cut off the round, after milling the face flat. Maybe that's what I'll do.

Alternatively, I could cut tapered cookies, then mill to parallel surfaces.

Open to more ideas. I'm going back out now to position and stabilizing it for bucking.



Noodles from a trial cut ...

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