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Simple divider for centering cuts on edges of common boards.

Project by Bob #2 posted 284 days ago 485 views 2 times favorited 21 comments Add to Favorites
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Bob #2

1683 posts in 427 days


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Simple divider for centering cuts on edges of common boards. No-picture-s No-picture-s Click the pictures to enlarge them

Finding center can be frustrating when you are in the shop and need a quick way to place a biscuit or dowel or mortise.
This simple math trick does the job for you.

Drill two holes in a piece of 3/8” thick stock that are 2” a part and exactly the size of your selected dowel material
The center hole should be the diameter of your favorite pencil stock.
All the holes must line up along a straight pencil line for this to work.
Drill a hole dead center between the previous dowels for the pencil.
If it’s a bit loose set a screw through the side of your wood to hold it .

That’s it!

By placing a dowel on each side of your wood and running down the stock with the dowels touching the sides you will draw a line dead center on the work.
You may want to stack more layers up to hold the pencil so the sharp end doesn’t protrude as much.

Enjoy Bob
brd-divider

-- A mind, like a home, is furnished by its owner


21 comments so far

View Thos. Angle's profile

Thos. Angle

3243 posts in 368 days


posted 284 days ago

Yep, got one but it isn’t as nice as yours. Mine uses nails. Ugly but it gives me a resaw line. Good post .

-- Thos. Angle, Owyhee Design, Oregon

View mot's profile

mot

4830 posts in 442 days


posted 284 days ago

I hope you made two!

-- You can discover more about a person in an hour of play than in a year of conversation. (Plato)

View David's profile

David

1802 posts in 545 days


posted 284 days ago

Very nice! I need one of these to make fast layouts with my Leigh FMT jig . . . better than using two combination squares. Thanks!

-- http://foldingrule.blogspot.com

View Karson's profile

Karson

12002 posts in 806 days


posted 284 days ago

Great Bob.

-- Karson Southern Delaware karson_morrison@bigfoot.com

View SC_Galoot's profile

SC_Galoot

13 posts in 288 days


posted 284 days ago

I’ve always liked this idea. And thanks to some time spent in the shop today, I’ve got some cutoffs that will be perfect for this. I don’t have any dowels long enough so I’ll try Thos’ idea of using nails.Thanks for sharing.

View gene's profile

gene

2130 posts in 290 days


posted 284 days ago

Bob,
I don’t have one now, But I will on Monday. Thanks for the idea.

-- Gene, a Christian in Virginia

View WayneC's profile

WayneC

5690 posts in 503 days


posted 284 days ago

Great Tip Bob. Thanks for sharing.

-- We must guard our enthusiasm as we would our life - James Krenov

View Chris 's profile

Chris

1010 posts in 397 days


posted 284 days ago

Thanks for the walk through. I think I’ll be making one tomorrow :)

-- Chris

View lclashley's profile

lclashley

223 posts in 520 days


posted 284 days ago

Cool idea, Thanks Bob.

View TopE5's profile

TopE5

262 posts in 345 days


posted 284 days ago

Thanks….after my last project, I made 5…...for progressively wider material. Good Read!

View shaun's profile

shaun

360 posts in 311 days


posted 284 days ago

Why do I do everything the hard way? This is slick and definitely one of those deals where I couldn’t see the forrest cause all those trees were in the way. Thanks, Bob

-- I've cut that board three times and it's still too short!

View Bob #2's profile

Bob #2

1683 posts in 427 days


posted 284 days ago

p.s. guys, for those who don’t know you can buy various sizes of dowel material in 3 or 5 foot lengths at most hardware stores worth their salt.
I keep a tube in the shop with the more common sizes.
They are not all that expensive.
I the high end harwood suppliers often have doweling in various hardwood materials as well.

Bob

-- A mind, like a home, is furnished by its owner

View Dadoo's profile

Dadoo

1430 posts in 396 days


posted 283 days ago

I agree with Shaun…I’ve seen this idea/jig before but still find myself measuring and marking.

*Still not ready to snatch the pebble…sigh.

-- Bob Vila would be so proud of you!

View Bob #2's profile

Bob #2

1683 posts in 427 days


posted 283 days ago

Of all the things I really do poorly, measuring is foremost.

So, I have to use all the props I cant find. <g>

Bob

-- A mind, like a home, is furnished by its owner

View coloradoclimber's profile

coloradoclimber

272 posts in 474 days


posted 283 days ago

Nicely done Bob. Simple and eminently useful.

This looks like just the ticket for splitting a board for resawing. Typically I’ll make up some laminate out of 4/4 stock, then resaw it down the middle. To find the middle I usually eyeball the fence position, nick it on the bandsaw blade, flip the stock over, nick that side and see if the second nick lines up with the first nick, then usually adjust and repeat. A little trick like this ought to get me right on the first time.

View TomFran's profile

TomFran

2334 posts in 400 days


posted 282 days ago

Great tool, Bob! Thanks for taking the time to give us some pictures and a little “how-to” instruction. I really appreciate posts like this.

-- Tom, Surfside Beach, SC - Romans 8:28

View Tony's profile

Tony

527 posts in 436 days


posted 274 days ago

Nice Jig Bob – and accurate very time. just one question, why not use a mortice gauge – this is what it was designed for?

-- Tony - All things are possible, just some things are more difficult than others! - SKYPE: Heron2005 (http://www.poydatjatuolit.fi)

View Bob #2's profile

Bob #2

1683 posts in 427 days


posted 274 days ago

Tony a mortise guage can measure the width of a mortise and help set the chisel width and the distance from one edge or the other.
It isn’t that good at finding a center.
You can set it and mark a line from each side and divide the space between the lines but that again wont work that well on larger stock with the mortise guage.

Check this great description out and you can see what I mean.
The other place I plan to use it is for resawing on my bandsaw.
cheers Bob

-- A mind, like a home, is furnished by its owner

View Tony's profile

Tony

527 posts in 436 days


posted 273 days ago

Bob, I was thinking of the single pin mortice or marking gauge. It was how I was taught Oh! so many years ago.

With a little practice you get it pretty close by eye, the just a quick adjustment, at tap here and there and it centred. But it does mean that you score a line – they do not come with pencils, although I do use a pencil down the groove sometimes.

Well whatever works for different people – it is still a nice project, simple ideas are the best and last the longest.

-- Tony - All things are possible, just some things are more difficult than others! - SKYPE: Heron2005 (http://www.poydatjatuolit.fi)

View Bob #2's profile

Bob #2

1683 posts in 427 days


posted 273 days ago

I follow you Tony.
That’s another way to do it.
With this one I just made however I can split a 8 inch board right down the center.
If it is tapered it will still follow the center of the work piece.
It will also give me the center of my rough timbers for resawing with a line to follow.

Your method served me for many years too and is still in my box of measuring tricks.

cheers
Bob

-- A mind, like a home, is furnished by its owner

View Jiri Parkman's profile

Jiri Parkman

534 posts in 219 days


posted 186 days ago

Nice project.

-- Jiri

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