Page 176 of 202 FirstFirst ... 76126166171172173174175176177178179180181186 ... LastLast
Results 2,626 to 2,640 of 3016
  1. #2626
    Join Date
    Aug 2010
    Location
    Toorloo Arm, VIC
    Age
    39
    Posts
    1,270

    Default

    Quote Originally Posted by nigelpearson View Post
    2) Hafco bed. Under the chuck, where the removable gap is, fills up with swarf. The coolant also collects there and rusts ferrous swarf, as it is a basically cup shaped:
    I truly hated that whole flat area. None of the swarf that landed there could go anywhere because the first hole through the bed is way back towards the tailstock, and it'd fill up ridiculously fast, especially if you had some stringy chips in there. Invariably I'd end up with a longer bit swinging around off the part that then grabbed everything piled up in that piece of bed, and launched chips and swarf absolutely everywhere.

    So glad the Graziano has holes through the bed right under the chuck, stops that from happening (mostly).

  2. #2627
    Join Date
    Aug 2019
    Location
    Revesby - Sydney Australia
    Age
    56
    Posts
    1,183

    Default

    Quote Originally Posted by Jekyll and Hyde View Post
    So glad the Graziano has holes through the bed right under the chuck, stops that from happening (mostly).

    It isn't only big machines like your Gratzi which have that feature. The toolmaker's little Pacific:
    IMG_1943.jpg

  3. #2628
    Join Date
    Aug 2019
    Location
    Revesby - Sydney Australia
    Age
    56
    Posts
    1,183

    Default Many hours bandsawing

    Vintage Engine guy has a big bit of 4340 round – 414mm long by 140mm round – that he wants to machine into a crank. Thinks it is just big enough to also get 4 con rods out of. So some careful band sawing occurred:


    IMG_1948.jpg IMG_1949.jpg IMG_1952.jpg IMG_1954.jpg

    IMG_1958.jpg



    The big bandsaw wasn't quite big enough, so we had to remove the a hydraulic ram pin, and then the tension spring, and then move the variable jaws to the other side so the blade cover would clear the material. And then the rubber straps to give it some cutting force.


    Final cuts were within 1mm parallel – middle block within 1.9mm of the target crank thickness!
    Attached Images Attached Images
    Nigel, from a cave FULL of unfinished projects and lost tools.

  4. #2629
    Join Date
    Jul 2006
    Location
    Athelstone, SA 5076
    Posts
    4,255

    Default

    [QUOTE=nigelpearson;1989083]I can see some wisdom in that, although the size of the target might be an issue?
    (hand-eye co-ordination is much better than knee-shin)



    /QUOTE]

    There are knee emergency stops with very large targets, they not your normal switch
    emstop.jpg

  5. #2630
    Join Date
    Nov 2007
    Location
    melbourne australia
    Posts
    3,228

    Default

    I've got no evidence to back this up, but I reckon for an emergency stop to be useful you need to use it every time you switch the machine off. It has to be muscle memory. I think for most people, when the machine grabs hold of them the brain is going to totally focus on the imperilled limb and forget all about the E-stop down at the knee.
    Chris

  6. #2631
    Join Date
    Nov 2007
    Location
    melbourne australia
    Posts
    3,228

    Default

    Quote Originally Posted by jack620 View Post
    I've got no evidence to back this up...
    Actually, I found some. From this paper http://archives.njit.edu/vol01/etd/1...td1986-010.pdf

    "In an industrial environment requiring an emergency stop motion, faster response would be expected if the operator was familiar with the exact motions required. This would seem to indicate that the emergency stop motion should be utilized during routine stopping of equipment."
    Chris

  7. #2632
    BobL is online now Member: Blue and white apron brigade
    Join Date
    Feb 2006
    Location
    Perth
    Posts
    7,182

    Default

    BILs DP off and E-switch - works via a headbutt

    DPswitch.jpg

  8. #2633
    Join Date
    Nov 2007
    Location
    melbourne australia
    Posts
    3,228

    Default

    I reckon that’s a good idea. Looks like it could use some padding though!
    Chris

  9. #2634
    BobL is online now Member: Blue and white apron brigade
    Join Date
    Feb 2006
    Location
    Perth
    Posts
    7,182

    Default

    Quote Originally Posted by jack620 View Post
    I reckon that’s a good idea. Looks like it could use some padding though!
    That grey rectangle is a foam block.

  10. #2635
    Join Date
    Oct 2011
    Location
    Norwood-ish, Adelaide
    Age
    59
    Posts
    6,540

    Default

    Finished my welding helmet stand today. The new helmet hasn't got the typical strap arrangement that they usually have so I made up an ellipical form to be a similar size to the top of a head. It's fashioned out of 12 segments (cut from 1.6mm sheet) that have then been welded together into that dome shape and then 'massaged' to remove the flats.
    DSCN8453 (Small).JPG
    That was then mounted on a swing out arm so I could lift it on and off the stand. In the photo below you can see a semicircular shape which is the previous style of helmet support that I have used.
    DSCN8481 (Small).JPG
    Seems to work...
    DSCN8480 (Small).JPG
    Michael

  11. #2636
    Join Date
    May 2011
    Location
    Murray Bridge S Aust.
    Age
    71
    Posts
    5,942

    Default

    Nice support for the mask, looks like Darth Vader came for a visit with nobody.
    I turned one up out of wood a few years back, all off centred turning. FUN, not.

    Kryn
    To grow old is mandatory, growing up is optional.

  12. #2637
    Join Date
    Oct 2011
    Location
    Norwood-ish, Adelaide
    Age
    59
    Posts
    6,540

    Default

    The worst part was trying to hold the thing while welding. Once the first tube was on it was so much easier (well, relatively) to clamp down and get an earth.

    Michael

  13. #2638
    Join Date
    Dec 2005
    Location
    South Australia
    Posts
    1,656

    Default

    That's a bit fancy leaves my "any were I put it" a bit wanting.

  14. #2639
    Join Date
    Aug 2011
    Location
    Melbourne
    Posts
    4,779

    Default

    Holy crap Michael, That looks like some 1950's science experiement!

    But, as usual I like what you have done! Put's me to shame. Mine helmet just gets plonked on the nearest horizontal surface.

    You could market that helmet holder for all the anti vaxer's to wear on their head to avoid detection!

    Simon
    Girl, I don't wanna know about your mild-mannered alter ego or anything like that." I mean, you tell me you're, uh, super-mega-ultra-lightning babe? That's all right with me. I'm good. I'm good.

  15. #2640
    Join Date
    Aug 2008
    Location
    near Rockhampton
    Posts
    6,216

    Default

    I know what it is really for. It is to stop the 5G signals that are emanating from the microchips in people who got covid vaccinations.
    Gold, the colour of choice for the discerning person.

Similar Threads

  1. latest little project
    By wayno60 in forum WELDING
    Replies: 3
    Last Post: 12th Jul 2008, 03:40 PM

Tags for this Thread

Posting Permissions

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