Free 50 Best Homemade Tools eBook:  
Remove advertisements
Results 1 to 5 of 5

Thread: Lathe alarm

  1. #1
    mklotz mklotz's Avatar
    Join Date
    Aug 2015
    Location
    LA, CA, USA
    Posts
    1,309
    Thanks
    82
    Thanked 2,344 Times in 840 Posts

    Lathe alarm

    I added a swarf-catcher tray to my lathe's carriage. It can be seen here...

    Lathe swarf tray

    Although the tray clears the bottom of the chucks, when working near to the chuck face the tray can hit the face of the headstock behind the chuck. If I'm threading this means that the leadscrew can try to drive the tray through the headstock if I'm not watching closely. (Don't ask me how I discovered this.)

    This and other situations convinced me that the lathe needed an alarm to warn me of impending disasters. The device I made...


    is fairly simple. A nine volt buzzer alarm and its battery are housed in a plastic container. If the two copper wires emerging from the top of the container are shorted the buzzer sounds loudly enough to get my attention. A microswitch with a long actuator is wired via bell wire across these contacts; pressing the actuator sounds the alarm.

    In front is a piece of brass with a neodymium magnet cemented to it. The microswitch will be attached to the brass flag. Then it's just a matter of sticking the switch under the swarf tray so the actuator contacts the headstock early enough to trigger the buzzer hung somewhere near my ear via one of the hooked copper wires.

    The switch can also be stuck to the lathe ways to announce other potentially dangerous positionings of the carriage.
    Last edited by mklotz; 07-09-2017 at 08:30 AM.
    ---
    Regards, Marv


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

  2. The Following 6 Users Say Thank You to mklotz For This Useful Post:

    benkeller3 (01-16-2017), olderdan (01-09-2017), Paul Jones (01-09-2017), PJs (01-09-2017), rlm98253 (01-21-2018), Seedtick (01-16-2017)

  3. #2
    olderdan's Avatar
    Join Date
    Jun 2016
    Location
    Devon UK
    Posts
    360
    Thanks
    759
    Thanked 643 Times in 225 Posts
    Ingenious as ever Marv,
    I always use stiff cardboard trays which are easily replaceable and will squash if things over travel, also easy to pick up and dump the swarf. I find the best source of said cardboard is beer boxes which also makes good templates if needed.
    I never throw anything away until I can think of no further use for it.

  4. The Following 3 Users Say Thank You to olderdan For This Useful Post:

    dwbachor (01-21-2018), Moby Duck (01-21-2018), Paul Jones (01-09-2017)

  5. #3
    [email protected] tonyfoale's Avatar
    Join Date
    Nov 2016
    Location
    Spain
    Posts
    477
    Thanks
    206
    Thanked 741 Times in 247 Posts
    I use the aluminium cooking trays that some food comes packaged in. They collapse easily. I also use them under bench grinder wheels to catch the stuff not caught by the covers.

  6. The Following 2 Users Say Thank You to tonyfoale For This Useful Post:

    Moby Duck (01-16-2017), Paul Jones (01-09-2017)

  7. #4
    Content Editor DIYer's Avatar
    Join Date
    Aug 2013
    Posts
    3,072
    Thanks
    305
    Thanked 601 Times in 543 Posts


    Thanks mklotz! We've added your Lathe Alarm to our Lathe Accessories category,
    as well as to your builder page: mklotz's Homemade Tools. Your receipt:




  8. #5
    benkeller3's Avatar
    Join Date
    Aug 2014
    Posts
    9
    Thanks
    42
    Thanked 3 Times in 2 Posts
    I have been thinking about making something just like this for my shaper. Long runs can lead your attention to move to other jobs... your design is perfect simple and movable to multiple machines. Thanks


    Post your reply!
    Join 33,912 of us and get our 50 Must Read Homemade Tools eBook free.



    50 Must Read Homemade Tools

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
  •