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Workbench #3: Preparing for draw-boring (dowels jig that finally works for me!)

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Blog entry by yuridichesky posted 03-02-2013 12:59 PM 2147 reads 8 times favorited 7 comments Add to Favorites Watch
« Part 2: vise handle, bench dogs, and legs Part 3 of Workbench series Part 4: Legs: mortise and tenon »

While my leg vise hardware is still being machined to mate screw and the wheel I’ve been working on the legs. In particular got ready for draw-boring.

My target was 10mm pegs (3/8” approx).

I made them from rough oak stock: first planed it a little, then ripped into beams and planed square blanks about 11×11mm (7/16” approx), so I had about 1mm allowance (1/32” approx). Then I rounded them roughly with the block plane:

At this point dowels were a little bit non-round and a little bit over-sized: time to employ some dowel-cutting jig.

First attempt was with pencil-sharpener jig that I first saw at Wood Gears. Here’s what I came up with:

Despite my hard trying I wasn’t able to tune it to make it work: it just trashed blanks. Failure.

Second attempt was with John Heisz's dowel maker. My version was much less accurate, no surprise it didn’t work well.


Failure.

The third attempt was my own [re-]invention: I drilled 10mm hole in 4mm (5/32”) thick steel bar—the same bar I used for John Heisz’s dowel maker—then I filed a bevel from input side of the jig (maybe 5 to 7 degrees I guess), then I filed teeth on the bevel:

And it worked like a champ!

So finally it took me just 5 minutes to make it work: two minutes to drill a hole, two more minutes to file bevel and teeth, and one more minute to fine-tune the jig (I enlarged the hole just very-very little so I’d have some little allowance for sanding). And yes, I used corded drill to drive dowels through the jig.

Don’t get me wrong, it’s me who failed with first two attempts, and those jigs are more than fine. But I found that my final version just gives you fewer chances to screw up.

Ok, here’s my draw-boring set: dowels and a guide I made especially for this occasion:

I hope next week my leg vise hardware will be ready so I can make all vise-mounting stuff on the leg and assemble legs finally.

Thanks for reading!

-- Yuri (10x4 -- yeah, that's my tiny shop!)



7 comments so far

View foneman's profile

foneman

111 posts in 2780 days


#1 posted 03-02-2013 02:40 PM

I like your setup the best and will have to give it a try for myself!!!

thanks for posting!
john

View yuridichesky's profile

yuridichesky

342 posts in 650 days


#2 posted 03-02-2013 07:22 PM

Thanks, John! I was surprised myself how quick and accurate it turned to be. Just make sure metal plate is thick enough.

-- Yuri (10x4 -- yeah, that's my tiny shop!)

View Mauricio's profile

Mauricio

6841 posts in 1837 days


#3 posted 03-03-2013 04:26 PM

You got to love the versatility of that wagon vise right Yuri! Great for holding a board vertically as well as horizontally.

I missed the part where you made a drawbore pin. It’s a nice one. Much better than mine because you have that gradual convex taper. Very nice!

Wow, I have never seen those two dowel making methods, very cool! I thought I had seen them all.

Check out this Japanese guy on YouTube, he has about 100 different ways to do it. You have obviously found a method that works, this is just interesting stuff to watch.
http://www.youtube.com/watch?v=vWuP8iaT4tA
http://www.youtube.com/watch?v=dwDjedeJCZ0
http://www.youtube.com/watch?v=Al0RRCk6k2w

-- Mauricio - Woodstock, GA - "Confusion is the Womb of Learning, with utter conviction being it's Tomb" Prof. T.O. Nitsch

View yuridichesky's profile

yuridichesky

342 posts in 650 days


#4 posted 03-04-2013 02:53 PM

Mauricio, you’re absolutely right about wagon vise! Can’t tell about leg vise yet, but wagon vise is my favorite clamping device so far.

This dowel-maker guy is a boss, I spent whole evening watching his videos :-)

-- Yuri (10x4 -- yeah, that's my tiny shop!)

View Mauricio's profile

Mauricio

6841 posts in 1837 days


#5 posted 03-04-2013 05:02 PM

Check out his yotube channel, he has so many ingenious ideas.

-- Mauricio - Woodstock, GA - "Confusion is the Womb of Learning, with utter conviction being it's Tomb" Prof. T.O. Nitsch

View mafe's profile

mafe

9554 posts in 1775 days


#6 posted 09-17-2013 06:15 PM

Really nice, I have to try and make one of these, looks really like you get perfect results.
Best thoughts,
Mads

-- Mad F, the fanatical rhykenologist and vintage architect. Democraticwoodworking.

View yuridichesky's profile

yuridichesky

342 posts in 650 days


#7 posted 09-17-2013 07:17 PM

I’m glad you liked it, it worked for me really well plus it’s quite simple and (very important in my case) doesn’t require any storage space.

-- Yuri (10x4 -- yeah, that's my tiny shop!)

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