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Workbench Build - Splayed leg French Bench #4: Wooden Screw

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Blog entry by Mauricio posted 03-30-2012 03:52 PM 4939 reads 3 times favorited 28 comments Add to Favorites Watch
« Part 3: Tap for Wooden Nut Part 4 of Workbench Build - Splayed leg French Bench series Part 5: Building the Top w/ a Spot for the Wagon Vise »

Hello again my friends,

I finally got some time to work more on my wooden screw. So here is what I’ve done.

First the layout, same pitch as the tap, I also lay out the groove for the external garter. Then saw to the line. I also used a set of dividers to score a center line between the kerfs.

Next I use a pencil and my fingers as a fence and mark out a quarter inch chamfer around the tip.

I sit on my freshly finished saw bench and use my “Leg Vise” to hold the screw while I rough out the chamfer.

I then smooth out the bevels with sand paper.

Then I started chopping out the threads with chisel and mallet.

After roughing it out I go over it whith a square file and then 80 grit sandpaper glued to a square piece of wood.

I did get it to work, and I almost made it through the nut last night…


It takes a lot of trial and error, putting the screw in, taking it out, knocking down the high burnished surfaces. It kind of sucks, I think will leave this method to Hero and Archimedes. I’m buying a router bit to finish this thing off. The good thing about having done it by hand is that I now have set up “block” for perfectly positioning the router bit. See Carters blog with a detailed video of that jig. http://lumberjocks.com/CartersWhittling/blog/29104

So I will be ordering the bit, I may carve it a little more in the meantime.

Thanks for reading!

Mauricio

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



28 comments so far

View Brandon's profile

Brandon

4138 posts in 1589 days


#1 posted 03-30-2012 04:06 PM

Wow that does look like a lot of work! Hopefully the router will make short order of it. :-)

-- "hold fast to that which is good"

View Mauricio's profile

Mauricio

6811 posts in 1789 days


#2 posted 03-30-2012 04:10 PM

That 2” of carving took me 2hrs, I have 19” of thread to cut! F that, I was getting faster but still…

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

View RGtools's profile

RGtools

3302 posts in 1292 days


#3 posted 03-30-2012 04:11 PM

That is a long process. I could only imagine. The is another hand tool way to do it though, you can make a threadbox that shaves it down to perfect. Roy Underhil did a great translation of Andre Roubo’s description of how to do this in his book Working with Wedge and Edge…which also contains plans for the bench you are building so you might have seen this already.

Take care and I am looking forward to seeing this come together.

-- Make furniture that lasts as long as the tree - Ryan

View Don W's profile

Don W

14924 posts in 1205 days


#4 posted 03-30-2012 04:26 PM

talk about screwing it up! Its still pretty cool the way you’ve worked it by hand, but I think I’d power threw it as well.

-- Master hand plane hoarder. - http://timetestedtools.com

View Smitty_Cabinetshop's profile

Smitty_Cabinetshop

9843 posts in 1256 days


#5 posted 03-30-2012 05:32 PM

”...I have 19” of thread to cut! F that…”

<chuckle>

-- Don't anthropomorphize your handplanes. They hate it when you do that. -- OldTools Archive

View Mauricio's profile

Mauricio

6811 posts in 1789 days


#6 posted 03-30-2012 06:50 PM

Thanks everyone for commenting.

Hey RG, I have Underhill’s book and I havent looked at in in a while but if I’m not mistaken he says that anything 2” and above is cut by hand the way I’m doing it. Those dies they sell cut the whole thread in one shot, not llittle by little (if I’m not mistaken) so the force needed to turn one is too great.

I like to do things galoot style as much as possible because I think its more fun. But we all have our limits I have a day job and the bit is on sale at rockler right now for $12.99!

Also, I’d like to do more in the future so the router jig I tihnk is going to be the way to go.

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

View RGtools's profile

RGtools

3302 posts in 1292 days


#7 posted 03-30-2012 06:53 PM

You are correct sir…but I thought about it and I wondered if you could rough it out first and shave it clean using the die.,.crap, you might as well use the router.

I might as well grab one too.

-- Make furniture that lasts as long as the tree - Ryan

View Mauricio's profile

Mauricio

6811 posts in 1789 days


#8 posted 03-30-2012 06:56 PM

Do it RG! The tap is easy to make, Your test nut becomes your temporary nut to attache the router too. A very doable project.

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

View jjw5858's profile

jjw5858

1117 posts in 1240 days


#9 posted 03-30-2012 08:19 PM

Hey Mauricio, fantastic work…no worries my friend…..I won’t tell Roy Underhill if you don’t!......lol
Looks awesome and great post! Everytime I use my powered drill/driver I joke to myself or friends in the shop…..don’t look and cover your ears Roy!.....lmao. Looking forward to more, best wishes!

Joe

-- "Make something you love tomorrow...and do it slowly" JLB

View Philip's profile

Philip

1107 posts in 1176 days


#10 posted 03-30-2012 11:04 PM

That is awesome. Makes me re-think making my own screws. Great info though, looking forward to see how it turns out.

-- If you can dream it, I can do it!

View ShaneA's profile

ShaneA

5291 posts in 1236 days


#11 posted 03-30-2012 11:09 PM

Look good Mauricio, very manly way to do it.

View Dave's profile

Dave

11160 posts in 1478 days


#12 posted 03-31-2012 01:03 AM

This shows your determination to get it done. Good work. Thanks for giving us a peak at the labor that this takes.

-- Superdav "No matter where you go - there you are." http://chiselandforge.com

View Mauricio's profile

Mauricio

6811 posts in 1789 days


#13 posted 03-31-2012 01:30 AM

Thanks for the support guys, Its nice to be able to talk to folks that get it. Try telling your non woodworking friends that your making a 2” wooden screw and their eyes glaze over.

Heck, you’ll get that look from actual woodworkers!

This project makes me feel like the Professor on Guiligans Island! LOL

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

View AnthonyReed's profile

AnthonyReed

4579 posts in 1078 days


#14 posted 03-31-2012 03:01 AM

Using the finished saw bench too :) Great work Mauricio!

-- ~Tony

View Brit's profile

Brit

5135 posts in 1480 days


#15 posted 03-31-2012 08:44 AM

You don’t know unless you try Mauricio. Sometimes the old ways are best and sometimes not. I would definitely go with the router personally. Thanks for sharing.

-- Andy -- Old Chinese proverb say: If you think something can't be done, don't interrupt man who is doing it.

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