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Waterpowered sawmill
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 Posted: Sun Oct 18th, 2009 01:48 am
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madmike3434
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truly inspiring pictures of how a small sawmill works.

thank you---------mike

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 Posted: Thu Aug 8th, 2013 07:01 pm
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Si.
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Herbtastic !

I saw some nice drawings by Al Armitage of a 1 man saw-mill, years ago.

Love the pix. Herb ...
... must have been nice working on the 1:1 stuff.

Cheers

Si.



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 Posted: Fri Aug 9th, 2013 03:10 am
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chasv
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:moose::moose::moose::moose:
i learned to reset teath and sharpen 12' BLADES ABOUT 40 YEARS Ago THAT WAS FUN!!



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 Posted: Sun Dec 22nd, 2013 05:41 pm
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FlyTyinFool
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Thank you, so much, for taking the time to tell the story.

I'm a "Why Guy," and just have to know how things work. The pictures are great, and the detailed descriptions are fantastic.



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 Posted: Mon Dec 23rd, 2013 06:02 am
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Ray Dunakin
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Herb Kephart wrote:
You don't sharpen saws this big (and this is by no means a large blade!), they have replaceable teeth.


How are the teeth attached? In that photo the blade looks like a single piece.



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 Posted: Mon Dec 23rd, 2013 04:05 pm
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Herb Kephart
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Ray- It's rather a clever system, and there was a number of different makers, the pieces from which were not--for the most part- interchangeable, although I think they all work on the same principle.

The saw blade has a gullet where each tooth goes, and this gullet has a slight spiral shape. The rear of the gullet has a male V in the back side. The tooth has a corresponding shape with a female V. the tooth cams into the blade  and cutting force jams it tight. While some teeth may end up slightly higher than others, the feed rate is usually so high that every tooth takes some wood out. A clever tool grabs the tooth, and a good rap with a hammer removes it when replacement is needed.

I'll see if I can find a tooth out in the shop, and if I can I try to show the shape in a close up photo and will attach it to this post.

One thing that was interesting - to me- anyway.

There is a Mennonite father and son that have a commercial (modern, though still circular as opposed to bandsaw) operation near this mill, and when there is an open house one or the other comes over to run this setup. When we were doing all the final settings, the first full depth cut through a log caught their attention, and the father said "It chust daunt slow down!" Their mill, with a big honking diesel, does slow some when it "gets into the cut" but the tremendous torque--albeit a small fraction of the horsepower--of the water wheel just pulls the blade along. Blade speed of both mills is approximately the same. Torque wins over horsepower every time.

Herb



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 Posted: Wed Dec 25th, 2013 08:06 pm
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Salada
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Incredible ! The amount of time & effort someone will spend typing/photo inserting - just to get out of wrapping the Christmas presents !.
Nice work Herb, that crown wheel/pinion/friction drive disc system looks so C19th but no doubt it did the job.

Regards Michael

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 Posted: Thu Dec 26th, 2013 03:03 am
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Herb Kephart
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Ray--Pix of an insert tooth

Cutting end to right



Groove in back of tooth


Front of tooth has a male V. Removal wrench hooks into semicircle in front of  and notch behind tooth. When tooth is installed the semicircle is at the bottom of the blade gullet

Herb



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