Free 173 Best Homemade Tools eBook:  
Become a founding member: 500+ tool plans, full site access, and more.

User Tag List

Results 1 to 10 of 10

Thread: Kill switch extension cord.

  1. #1
    Supporting Member Tuomas's Avatar
    Join Date
    Jun 2016
    Location
    Jyväskylä Finland
    Posts
    802
    Thanks
    542
    Thanked 1,693 Times in 486 Posts

    Tuomas's Tools

    Kill switch extension cord.

    As a title says.

    This is my kill switch extension cord.
    Its a plate that's been bend to 90 degree angle.

    To the longest side, i mounted a kill switch and electric outlet.
    In the shortest side is a magnet. ( 15 kg lifting magnet )

    Kill switch extension cord.-fb_img_1623203880290.jpg

    Easy to change to what ever electric tool i use.
    Kill switch extension cord.-fb_img_1623203885938.jpg

    Specially with tablesaw, this is usefull.
    When put to the floor its much easier to reach it with your feet.
    Than power switch that's placed to the side of the saw, with your hand.

    Kill switch extension cord.-fb_img_1623203890721.jpg

    Usually you can see, hear, or feel when workpiece that you are cutting, doesn't go straight. Then risk of "kickback" gets higher.
    One can try to pull workpiece back, lift it off or something.. but, its sometimes tricky. Specially with wide boards, both hands on it.

    Then just stamp to the killswitch.

    173 Best Homemade Tools eBook

  2. The Following 9 Users Say Thank You to Tuomas For This Useful Post:

    baja (Jun 13, 2021), Beserkleyboy (Jun 9, 2021), DIYer (Jun 9, 2021), Frank S (Jun 9, 2021), Jon (Jun 9, 2021), kess (Jun 10, 2021), NortonDommi (Jun 10, 2021), rlm98253 (Jun 9, 2021), Toolmaker51 (Jun 11, 2021)

  3. #2
    Supporting Member Frank S's Avatar
    Join Date
    Aug 2015
    Location
    Peacock TX
    Posts
    6,735
    Thanks
    850
    Thanked 5,315 Times in 2,548 Posts

    Frank S's Tools
    A great Idea
    I have a Shopsmith wood lathe with table saw and jig saw attachment's your kill sw. build just gave me idea to mount on on my machine
    Never try to tell me it can't be done
    When I have to paint I use http://kbs.justoldtrucks.com/

  4. The Following User Says Thank You to Frank S For This Useful Post:

    Tuomas (Jun 10, 2021)

  5. #3
    Content Editor
    Supporting Member
    DIYer's Avatar
    Join Date
    Aug 2013
    Posts
    3,086
    Thanks
    628
    Thanked 1,541 Times in 1,380 Posts


    Thanks Tuomas! We've added your Kill Switch Extension Cord to our Extension Cords category,
    as well as to your builder page: Tuomas's Homemade Tools. Your receipt:




  6. #4
    Supporting Member Beserkleyboy's Avatar
    Join Date
    Aug 2014
    Location
    Sunny South Coast NSW, Australia
    Posts
    298
    Thanks
    406
    Thanked 195 Times in 109 Posts

    Beserkleyboy's Tools
    Thanks Tuomas, my cabinet saw is wired direct, but the switch is on the front, easily diverted to the floor...AND I've got a big red kill switch in my misc elect box(s). Cheers
    Jim in rainy cold Sth Cst AUS

  7. The Following User Says Thank You to Beserkleyboy For This Useful Post:

    Tuomas (Jun 10, 2021)

  8. #5
    Supporting Member
    Join Date
    Oct 2020
    Posts
    3
    Thanks
    1
    Thanked 8 Times in 2 Posts

    delalio's Tools
    Great work. I literally made one of these on Tuesday for my lathe / pillar drill / grinder / etc... Video coming soon.

  9. The Following User Says Thank You to delalio For This Useful Post:

    Tuomas (Jun 10, 2021)

  10. #6
    Supporting Member Tuomas's Avatar
    Join Date
    Jun 2016
    Location
    Jyväskylä Finland
    Posts
    802
    Thanks
    542
    Thanked 1,693 Times in 486 Posts

    Tuomas's Tools
    Quote Originally Posted by delalio View Post
    Great work. I literally made one of these on Tuesday for my lathe / pillar drill / grinder / etc... Video coming soon.
    Thanks. I made a video too. But, i thought its too simple, and pictures are enough.

    Outlets and connections are different here, so it wouldn't have been very useful video to people outside northern europe.

  11. #7
    Supporting Member mklotz's Avatar
    Join Date
    Aug 2015
    Location
    LA, CA, USA
    Posts
    2,627
    Thanks
    277
    Thanked 5,024 Times in 1,675 Posts

    mklotz's Tools
    Great idea, Tuomas, and very nice implementation.

    For the benefit of folks contemplating building their own kill extension cord, please allow me to offer a few thoughts on the subject...

    A big red button is visible and easy to actuate but one must consider its location as well. I once had a table saw arrangement that had a horizontal bar kill switch across the front edge near the user's hips. Pressure on this bar would stop the saw. No hunting for the kill switch with hand or foot; just bump the table with your hip. Putting such a bar across the front of the drip pan on the lathe would be even better. If you got entangled and the machine started pulling you in you would without thinking hit the bar and shut down the lathe.

    This led me to the following concept for a kill switch mechanization...

    Separate, dedicated, tailored switches permanently mounted to each machine. To keep costs down, low current switches would be used. In turn these switches would interface via light-weight signal wire to a relay that controlled the power switching in the extension cord. A better description of this arrangement is discussed in my remote controlled relay post...

    Remotely controlled relay
    ---
    Regards, Marv


    Home Shop Freeware
    http://www.myvirtualnetwork.com/mklotz

  12. The Following User Says Thank You to mklotz For This Useful Post:

    Tuomas (Jun 11, 2021)

  13. #8
    Supporting Member Frank S's Avatar
    Join Date
    Aug 2015
    Location
    Peacock TX
    Posts
    6,735
    Thanks
    850
    Thanked 5,315 Times in 2,548 Posts

    Frank S's Tools
    Quote Originally Posted by mklotz View Post
    Great idea, Tuomas, and very nice implementation.

    For the benefit of folks contemplating building their own kill extension cord, please allow me to offer a few thoughts on the subject...

    A big red button is visible and easy to actuate but one must consider its location as well. I once had a table saw arrangement that had a horizontal bar kill switch across the front edge near the user's hips. Pressure on this bar would stop the saw. No hunting for the kill switch with hand or foot; just bump the table with your hip. Putting such a bar across the front of the drip pan on the lathe would be even better. If you got entangled and the machine started pulling you in you would without thinking hit the bar and shut down the lathe.

    This led me to the following concept for a kill switch mechanization...

    Separate, dedicated, tailored switches permanently mounted to each machine. To keep costs down, low current switches would be used. In turn these switches would interface via light-weight signal wire to a relay that controlled the power switching in the extension cord. A better description of this arrangement is discussed in my remote controlled relay post...

    Remotely controlled relay
    Agreed; Marv in addition there are some instances where I can see a benefit of a triggered spring loaded braking mechanism attached to the idea of a push bar. Press against the bar the micro switch cuts power to the magnetic motor controller at the same time it trips the trigger locking down the machine much the same way those annoying lawnmower blade stops work.
    I never thought I'd say this but at least once I have been glad to have a blade stop on my push mower
    Never try to tell me it can't be done
    When I have to paint I use http://kbs.justoldtrucks.com/

  14. #9
    Supporting Member Tuomas's Avatar
    Join Date
    Jun 2016
    Location
    Jyväskylä Finland
    Posts
    802
    Thanks
    542
    Thanked 1,693 Times in 486 Posts

    Tuomas's Tools
    Quote Originally Posted by mklotz View Post
    Great idea, Tuomas, and very nice implementation.

    For the benefit of folks contemplating building their own kill extension cord, please allow me to offer a few thoughts on the subject...

    A big red button is visible and easy to actuate but one must consider its location as well. I once had a table saw arrangement that had a horizontal bar kill switch across the front edge near the user's hips. Pressure on this bar would stop the saw. No hunting for the kill switch with hand or foot; just bump the table with your hip. Putting such a bar across the front of the drip pan on the lathe would be even better. If you got entangled and the machine started pulling you in you would without thinking hit the bar and shut down the lathe.

    This led me to the following concept for a kill switch mechanization...

    Separate, dedicated, tailored switches permanently mounted to each machine. To keep costs down, low current switches would be used. In turn these switches would interface via light-weight signal wire to a relay that controlled the power switching in the extension cord. A better description of this arrangement is discussed in my remote controlled relay post...

    Remotely controlled relay
    Yep. I was thinking the same, that in actual emergency, this kind of button doesn't always work, you need to hit it.

    So, because i seem to be more mechanical, than digital guy.
    Started to plan new version, that works somewhat same way than mousetrap.

    One that works when you kick it or something like that, without need to hit the actual button ( its somewhat small target )

    Electrical version would be better.
    I will ready your text about the relay with attention.
    Last edited by Tuomas; Jun 11, 2021 at 11:54 AM.

  15. #10
    Supporting Member mklotz's Avatar
    Join Date
    Aug 2015
    Location
    LA, CA, USA
    Posts
    2,627
    Thanks
    277
    Thanked 5,024 Times in 1,675 Posts

    mklotz's Tools
    Quote Originally Posted by Tuomas View Post
    Yep. I was thinking the same, that in actual emergency, this kind of button doesn't always work, you need to hit it.
    ...
    One that works when you kick it or something like that, without need to hit the actual button ( its somewhat small target )
    ...
    Perhaps a mercury switch in an appropriately shaped box. Knock the box over and the switch turns circuit off. Another possibility is a plumb bob in a ring. When the container is jostled the bob hits the ring and completes the circuit that disables the power.



    173 Best Homemade Tools eBook
    ---
    Regards, Marv


    Home Shop Freeware
    http://www.myvirtualnetwork.com/mklotz

Thread Information

Users Browsing this Thread

There are currently 1 users browsing this thread. (0 members and 1 guests)

Bookmarks

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •