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vpt
11-30-2012, 07:08 PM
I suddenly have the need for a tenon cutter for about 10 log ends. Looking at the commercial ones I can't help but think one can be built for a few uses in a home shop. Anyone here made one? I am thinking a pipe with a flat flange welded on the end with a hss bit from the lathe strapped in somehow. I'm not to worried about perfect looking smooth cuts, this is a rough cut log bed.

Only other way I can think of putting it together is by cutting flats on each log on the ends and bolt or screw them together.

Would love to hear some advise and possibly see some pics. :)

A pic of the tool and what it does:

http://site.ozarkloghomes.com/images/lumberjacktools/home_series_and_tenon.jpg

sasquatch
11-30-2012, 07:38 PM
No suggestions Andy, but i agree those things are pretty pricey!!

MarcAG
11-30-2012, 10:35 PM
How big a log? How big a tenon? and how many?

elf
12-01-2012, 04:24 AM
I suddenly have the need for a tenon cutter for about 10 log ends. Looking at the commercial ones I can't help but think one can be built for a few uses in a home shop. Anyone here made one? I am thinking a pipe with a flat flange welded on the end with a hss bit from the lathe strapped in somehow. I'm not to worried about perfect looking smooth cuts, this is a rough cut log bed.

Only other way I can think of putting it together is by cutting flats on each log on the ends and bolt or screw them together.

Would love to hear some advise and possibly see some pics. :)

A pic of the tool and what it does:

http://site.ozarkloghomes.com/images/lumberjacktools/home_series_and_tenon.jpg

Drill a hole through a block of wood slightly larger than the tenon. Cut a slot in the block just wide enough to hold a cutter. The cutter can be made from an old saw blade or any other high carbon steel. Hold the cutter in the slot with a couple of bolts. You may need to experiment with the angle and width of the slot to get it to cut efficiently. Think of it as a wood plane with a round shoe.

For 10 of them, it would probably be faster and easier as well as looking better if you just cut them with an ax. :)

vpt
12-01-2012, 08:55 AM
How big a log? How big a tenon? and how many?



I am thinking something around 1.75 x 2.5" tenon The logs are around 6" at the big end and 3" at the small end.

One other thing I was thinking of trying was a hole saw strait in the end and then just cut around the log with a saw to remove the doughnut.

Lew Hartswick
12-01-2012, 09:30 AM
I am thinking something around 1.75 x 2.5" tenon The logs are around 6" at the big end and 3" at the small end.

One other thing I was thinking of trying was a hole saw strait in the end and then just cut around the log with a saw to remove the doughnut.
Probably would work BUT you'd have to do a LOT of "pecking" to keep the
teeth clear. (no place for the sawdust to go) .
I was thinking if you don't need the nice radius at the end of the tennon, it
shouldn't be too difficult to "gin up" a cutter like you mentioned at the start.
...lew...

vpt
12-01-2012, 10:29 AM
I'm gonna look around what I have and see if I can come up with anything today. I'll have to dig around the attics of the shops, I might be surprised what I find, I may even find an actual tenon cutter.

gary hart
12-01-2012, 10:53 AM
Post 316 in the "Shop Made Tools" might have some info for ideas. http://bbs.homeshopmachinist.net/threads/39202-Shop-Made-Tools?p=515701#post515701

RancherBill
12-01-2012, 11:10 AM
Make a red neck wood lathe!

Drive a nail into both ends of the log and support the log on these centers.

Affix a chainsaw to a board that is hinged. Put a stop underneath the board so the saw can only go to the desired diameter. Have an assistant rotate the log and it will make your tenon.

spongerich
12-01-2012, 12:08 PM
Slightly less redneck version...

If you have a table saw and/or a radial arm saw, you could easily fashion a jig. Make it like a overgrown V-block with some rollers.

You'll get a better finish than the chansaw method, albeit slightly less exciting and a bit less fun.

MarcAG
12-01-2012, 01:07 PM
If you can manage to get a relatively square tenon with a circular saw, chain saw, etc. You can easily finish up with a draw knife by hand. It actually doesn't take that long, it's an easily controllable tool if adequately sharp and pretty fast at that. And it's satisfying to boot.

cuslog
12-01-2012, 01:28 PM
I own / operate a Log Home company. We've cut tens of thousands of those tennons.
Here's a picture of a tennon cutter I made a few years ago. Not a great picture but I think youll get the idea.
Basically a modified radial arm saw with a jig to spin the spindles like turning between centers.
Brush cutter blade W/ chainsaw teeth. - Conventional sawblade works, just slower.
For only 10 pieces you could screw together some plywood for a frame, a couple screws or nails thru for centers and spin them by hand.


http://i726.photobucket.com/albums/ww262/cuslog/PICT0002.jpg

vpt
12-01-2012, 03:17 PM
Post 316 in the "Shop Made Tools" might have some info for ideas. http://bbs.homeshopmachinist.net/threads/39202-Shop-Made-Tools?p=515701#post515701

Very nice! Thats the kind of thing I was thinking at first but I really don't have anything big enough to make the body out of unless I welded something together.


Make a red neck wood lathe!

Drive a nail into both ends of the log and support the log on these centers.

Affix a chainsaw to a board that is hinged. Put a stop underneath the board so the saw can only go to the desired diameter. Have an assistant rotate the log and it will make your tenon.


Slightly less redneck version...

If you have a table saw and/or a radial arm saw, you could easily fashion a jig. Make it like a overgrown V-block with some rollers.

You'll get a better finish than the chansaw method, albeit slightly less exciting and a bit less fun.


I own / operate a Log Home company. We've cut tens of thousands of those tennons.
Here's a picture of a tennon cutter I made a few years ago. Not a great picture but I think youll get the idea.
Basically a modified radial arm saw with a jig to spin the spindles like turning between centers.
Brush cutter blade W/ chainsaw teeth. - Conventional sawblade works, just slower.
For only 10 pieces you could screw together some plywood for a frame, a couple screws or nails thru for centers and spin them by hand.


http://i726.photobucket.com/albums/ww262/cuslog/PICT0002.jpg


That is a great way to get it done! I may look this way if I have to do any more cuts like this again.


Well I made up a real conglomeration of a cutter today and got 4 ends done so far. Came in to eat for a quick break. Gonna go back out and drill some holes and see how it goes together. I'll take some pics of the contraption as well.

vpt
12-01-2012, 07:04 PM
Here is my crude temporary contraption. It is a big socket that happen to be the right size to take a thread for a bottle valve protector. Threaded the cage on and wedged a hss blank between the threads and used a bolt to hold it down tight. The hose clamps and metal strips were the fine tuning of the tool.

http://img854.imageshack.us/img854/2511/tenoncutter003.jpg

http://img5.imageshack.us/img5/8273/tenoncutter005.jpg

http://img703.imageshack.us/img703/6728/tenoncutter006.jpg

I had to cut down the end of the logs a bit on the big end before running the contraption in. The small end of the logs I was able to just run the contraption right in.
http://img824.imageshack.us/img824/9099/tenoncutter001.jpg

sasquatch
12-01-2012, 07:10 PM
"The mother of invention!!"

We need pics of the finished bed now , when you get it done.

wierdscience
12-01-2012, 08:37 PM
Here's one using a router motor-

http://www.youtube.com/watch?v=zm3OPg3m0wQ

RancherBill
12-02-2012, 12:35 AM
I like it. It has red neck engineering with the hose clamp!!!!

Jon Heron
12-02-2012, 12:56 AM
One other thing I was thinking of trying was a hole saw strait in the end and then just cut around the log with a saw to remove the doughnut.
A friend of mine made 3 log beds using a hole saw, they all look pretty good too!
Cheers,
Jon

vpt
12-02-2012, 09:43 AM
"The mother of invention!!"

We need pics of the finished bed now , when you get it done.


Will do for sure.



Here's one using a router motor-

http://www.youtube.com/watch?v=zm3OPg3m0wQ

Interesting one as well. Apparently there is more than a few ways to tenon a log.


I like it. It has red neck engineering with the hose clamp!!!!

Absolutely! And not just one clamp but 4. I had to put 2 clamps together to make it around the bottle cage for each metal filler piece.


A friend of mine made 3 log beds using a hole saw, they all look pretty good too!
Cheers,
Jon


If the job comes along again in the future I will definitely be looking into some easier and better way than the hand held contraption.

The biggest problem that I had was the two main beams are pretty long. Otherwise I had the thought in my head to support both ends of the log on a central axis to cut the tenons much like everyone else has shown.

Maybe I'll find a chunk and turn up a nice tenon cutter much like Gary's for the long pieces in the future.

vpt
12-03-2012, 06:59 PM
We need pics of the finished bed now , when you get it done.


Still have stuff to do but thought I would share what I have done up to today. Instead of tenon cuts I decided to go with notches, dowels, and screws for the rest of the bed. For a few reasons I guess, I like the look of notched joints in sometimes and in some places, they are easier for me right now with the tools I have, and well, why not. lol

Still have lots of sanding and knocking down edges and then some satin finish. Anyone have any recommendations for a finish?

I must say when working with wood that has no edges to measure to, no straightness, and constantly varying thickness and sizes is a whole new experience.

http://img600.imageshack.us/img600/7324/logbed003.jpg

Joints are all nice and tight. I didn't hammer them all the way in yet because I have to pull it apart to get it in the house.

http://img19.imageshack.us/img19/7093/logbed006.jpg

http://img38.imageshack.us/img38/5495/logbed005.jpg

Clay likes it!
http://img24.imageshack.us/img24/4131/logbed011.jpg

sasquatch
12-03-2012, 07:59 PM
Thanks for the pics Andy,, And a pair of cute kids too!

danlb
12-03-2012, 09:03 PM
All this time I thought you were making flower beds. It seemed over engineered for that use.

Good work. Kids look happy.

Dan

Lew Hartswick
12-04-2012, 08:46 AM
<Joints are all nice and tight. I didn't hammer them all the way in yet because I have to pull it apart to get it in the house.>

When you go to remove them, I guess a chain saw will be in order then. :-)
...lew...

vpt
12-04-2012, 09:01 AM
Or a bigger hammer. lol

Thanks for the complements!