LumberJocks

HandScrew

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Project by George_SA posted 12-02-2014 11:20 AM 1784 views 6 times favorited 5 comments Add to Favorites Watch

I decided to make some handscrew clamps. I was inspired by the Traditional handscrew clamps from Woodsmith e-Tips

I drew a template in sketchup - which can be downloaded for marking out the holes. Barrel nuts and t-nuts and such hardware is difficult to obtain in my neck of the woods so I had to make my own barrel nuts. Fortunately I had some 16mm tubing which I used. Drilled and tapped (Pic 4). I epoxied some lock nuts around the the free turning barrels.

I also tapped the handles before I epoxied them to the threaded rod. I used 6mm threaded rod as the clamp is relatively small.

This was just a test build and I will probably make some adjustments to future builds.
Comments and suggestions will be welcome.

-- There are some things that money can't buy - Manners, morals and integrity





5 comments so far

View drbyte's profile

drbyte

727 posts in 3526 days


#1 posted 12-02-2014 02:21 PM

Nice! How about a little more detail? Which of the “barrels” are free turning and which are threaded? Is it all regular right-hand thread? Are the threaded barrels nearest the handles? What size rod are you using for the screws?

-- Dennis, WV

View George_SA's profile

George_SA

298 posts in 1677 days


#2 posted 12-02-2014 04:27 PM

Dennis,
The easy questions first :) The others I will try to explain with some photos.

1) #### Is it all regular right-hand thread? #####
I would like to do a right hand and a left hand, but left hand threaded rod and taps are scarce where I live so it has to be right hand thread.
2) #### What size rod are you using for the screws? #####
For the 160 mm jaw (the one I made) I use 6mm rod. For 200 mm jaw (which I plan to make) 8mm rod and for the 250 mm jaw 10mm rod
3) ##### Which of the “barrels” are free turning and which are threaded? & Are the threaded barrels nearest the handles? #####
Here are some additional photos to help explain



Yes the threaded barrels are those on the handle side. The free turning barrel has two jam nuts epoxied on both sides. The threaded barrels go in the holes with the thin slot. See the illustration below

In future builds I plan to devise some method to keep the barrels in place so that they don’t slide up and down.

I got my inspiration for making the barrels from the I build it YouTube video.

-- There are some things that money can't buy - Manners, morals and integrity

View Bluepine38's profile

Bluepine38

3341 posts in 2549 days


#3 posted 12-02-2014 06:07 PM

I had to take a quick look to find out why parts were in short supply. You are located just a little off the
beaten path, and while you could probably find all the parts you wanted on google, the shipping charges
could be enormous. Very good use of what you have on hand. I have found that grade 5. or lower
metric bolt shafts make very good barrel nuts, since bolts are usually easier to find than metal shaft and
are easy to drill and tap. Thank you for sharing.

-- As ever, Gus-the 77 yr young apprentice carpenter

View drbyte's profile

drbyte

727 posts in 3526 days


#4 posted 12-02-2014 09:17 PM

Thanks for the info! And the pics!!

-- Dennis, WV

View George_SA's profile

George_SA

298 posts in 1677 days


#5 posted 12-03-2014 07:39 PM

Hi Gus, Thanks for the advice. I didn’t think about that angle. As always I have to improvise, but that is not thing in itself as it keeps the creative juices flowing.

-- There are some things that money can't buy - Manners, morals and integrity

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