• Advertise with us
Project by tyvekboy posted 04-07-2015 04:25 PM 16566 views 53 times favorited 34 comments Add to Favorites Watch
✮ PADDLE SAFETY SWITCH FOR  DELTA UNISAW • No picture No picture No picture No picture No picture
Zoom Pictures

April 7, 2015

UPDATE: Drawings added to end of post for those who have this switch on their Unisaw.

Here is my original switch for my Unisaw.

To increase the safety factor on my tablesaw, I decided to add a “paddle” safety switch to my Delta Unisaw.

It’s a relatively simple solution.


3 – pieces of wood

       (2) Sides = 3 X 7 X 3/4 inches

       (1) Paddle = 5-1/8 X 7 X 3/4 inches

2 – 1/4 inch all thread rods 5-3/4 inches long
4 – nuts
4 – washers
2 – metal rods 1-1/2 inches long


Before the left and right sides were cut to shape, 1/4 inch holes for the all thread rod and the pivot holes were drilled while the pieces were held on the drill press together.

Then the Left and right hand shapes were cut.


After cutting the paddle to shape a hole for access for the start button was drilled.

A recess in the area of the stop button was drilled in the back of the paddle.

Two holes for the 2 metal pivot rods were drilled and the rods inserted.

I decorating the front with my wood burning tool.

All edges on all wood parts were rounded over. Danish oil was used on all wood parts.

The paddle is now ready.

The recess for the STOP button was made so that the paddle could be positioned closer to the switch housing and the START button would be closer to the surface of the paddle. I’m estimating that 1/4 inch movement is all that’s required to activate the STOP button.

The parts are then assembled loosely …

… and slipped over the switch housing.

The side pieces are 1-1/2 inches longer than the sides of the original switch housing. When the all thread rods are installed, the design allows for UP and DOWN as well as IN and OUT movement on the original switch housing to make positioning the paddle switch easy.

After the hole in the paddle is centered over the START button by moving the assembly UP or DOWN, the assembly is then moved IN or OUT on the switch housing till the paddle hangs properly. The nuts are then tightened on the all-thread rods … tight enough so that the safety paddle switch doesn’t move.

The original switch box was not harmed in this installation.

Now I have a bigger target to shoot for if I need to shut the tablesaw off in a hurry.

Thanks for looking. Comments and questions welcomed.


The following is an experiment. I’ve included SU drawings of the parts. Please let me know if they are useful. If not I will remove them from this post.






End of experiment.

Please leave a comment and let me know if the drawings are helpful. Thanks.

-- Tyvekboy -- Marietta, GA ………….. one can never be too organized

34 comments so far

View Jim Jakosh's profile

Jim Jakosh

25287 posts in 3984 days

#1 posted 04-07-2015 04:31 PM

clever you Americans!!

-- Jim Jakosh.....Practical Wood Products...........Learn something new every day!! Variety is the Spice of Life!!

View socrbent's profile


1016 posts in 3148 days

#2 posted 04-07-2015 04:34 PM

Well done and it looks good.

-- socrbent Ohio

View Lenny's profile


1674 posts in 4405 days

#3 posted 04-07-2015 05:01 PM

Well done and an intelligent safety upgrade.

-- On the eighth day God was back in His woodworking shop! Lenny, East Providence, RI

View Mauricio's profile


7165 posts in 4030 days

#4 posted 04-07-2015 05:03 PM

Very cool!

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

View luv2learn's profile


3079 posts in 3181 days

#5 posted 04-07-2015 05:13 PM

What a great safety upgrade. I am saving this one!!!

-- Lee - Northern idaho~"If the women don't find you handsome, at least they ought to find you handy"~ Red Green

View mikethetermite's profile


602 posts in 4145 days

#6 posted 04-07-2015 05:17 PM

With you 100% great safety upgrade

-- Mike The Termite ~~~~~ Working safely may get old, but so do those who practice it.

View Julian's profile


1592 posts in 3569 days

#7 posted 04-07-2015 05:26 PM

That’s great. Scrap wood and some hardware. Just as good as the ones in the store.

-- Julian

View Schwieb's profile


1912 posts in 4340 days

#8 posted 04-07-2015 05:57 PM

Nice work Alex. I’m wondering what you are doing that you need to shut the saw off so fast for? LOL

-- Dr. Ken, Florida - Durch harte arbeit werden Träume wahr.

View UncleStumpy's profile


742 posts in 3191 days

#9 posted 04-07-2015 06:07 PM

Hah! Looks a thousand times better than the original!
And works better too. You clever Americans!

-- "They don't want it perfect - they want it SPECIAL"

View grizzman's profile


7836 posts in 4182 days

#10 posted 04-07-2015 06:27 PM

you did a really nice job on this, i think all saws should come with a device such as this…

-- GRIZZMAN ...[''''']

View kiefer's profile


5799 posts in 3545 days

#11 posted 04-07-2015 07:03 PM

That’s a nice setup you made Alex looks real professional .
I made one not as fancy a couple years ago and have only one problem with it when I lean forward at times my thigh will push the paddle and shut off the saw during a cut .
It sure is a handy safety device that got me out of trouble a few times .

Klaus .

-- Kiefer

View madts's profile


1942 posts in 3218 days

#12 posted 04-07-2015 07:22 PM

Very nice idea. Thanks.

-- Thor and Odin are still the greatest of Gods.

View bluekingfisher's profile


1333 posts in 3858 days

#13 posted 04-07-2015 07:35 PM

A very useful accessory, been meaning to make one for years.

-- No one plans to fail, they just, just fail to plan

View Joe Lyddon's profile

Joe Lyddon

10938 posts in 4931 days

#14 posted 04-07-2015 07:36 PM

Very GOOD!

A Nice & Easy way of mounting the device too!!


Thank you!

-- Have Fun! Joe Lyddon - Alta Loma, CA USA - Home: ... My Small Gallery:

View mafe's profile


12609 posts in 3968 days

#15 posted 04-07-2015 07:41 PM

Really fine and really clever.
Play safe or die trying.
Best thoughts,

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

showing 1 through 15 of 34 comments

Have your say...

You must be signed in to post the comments.

DISCLAIMER: Any posts on LJ are posted by individuals acting in their own right and do not necessarily reflect the views of LJ. LJ will not be held liable for the actions of any user.

Latest Projects | Latest Blog Entries | Latest Forum Topics