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  1. #16
    Join Date
    Aug 2015
    Location
    QLD
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    690

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    Quote Originally Posted by TommyGMachining View Post

    ...below is a link to a video where I...

    https://youtu.be/BXBrk2_Bn6Q?t=666

    AGHHHHH...

    Music in machining videos - BAD!

    ...apart from that, I enjoyed the vid once I turned the volume off..




    .

  2. #17
    Join Date
    Nov 2018
    Location
    Tasmania
    Posts
    48

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    Quote Originally Posted by YBAF View Post
    AGHHHHH...

    Music in machining videos - BAD!

    ...apart from that, I enjoyed the vid once I turned the volume off..




    .
    These days I only use it as part of the 'story', build is going bad so sad music etc
    Otherwise I only do voice over and machining noises

  3. #18
    Join Date
    Nov 2008
    Location
    Perth WA
    Age
    67
    Posts
    6,216

    Default

    Quote Originally Posted by caskwarrior View Post
    Those dowels in the photos above look like they are stepped to me. Bob do they have a bigger of in the casting side?

    If not they will be easily obtainable but dowels are generally satanically hard and ground. You can turn them up but you risk deformation and galling.
    Quote Originally Posted by BobL View Post
    If the pins are for alignment purposes do the really need to be hardened?
    Ralph and Bob,

    The pins are stepped and unhardened. I made and installed them probably sixteen years ago and imagine I would have made them from 4140. They have coped well enough with my rough handling.

    Bob.

  4. #19
    Join Date
    Mar 2011
    Location
    Dural NSW
    Age
    78
    Posts
    1,173

    Default Alignment pins on Hercus o Mill

    Quote Originally Posted by Anorak Bob View Post
    Ralph and Bob,

    The pins are stepped and unhardened. I made and installed them probably sixteen years ago and imagine I would have made them from 4140. They have coped well enough with my rough handling.

    Bob.
    Agreed, the Pins or Alignment Dowels work fine in the unhardened state.
    Bruce

  5. #20
    BobL is offline Member: Blue and white apron brigade
    Join Date
    Feb 2006
    Location
    Perth
    Posts
    5,434

    Default

    While I was a student I had a summer job at a septic tank factory. There were two large new Italian machines that made 2m high by 1.2m wise x 70 mm thick septic tanks. The tanks were formed inside a HD steel cylindrical form containing steel mesh by a massive piston that spun while it was hydraulically lifted up inside the tank. Concrete was mixed in concrete truck sized mixer about 20ft above the ground and carefully dropped onto the slowly spinning piston which spun the concrete outwards onto the walls of the tank. As the piston was raised 6 large (400mm in diameter x 100 mm thick) steel rollers/impellers on the rim on the piston compacted the concrete hard up against the mesh and tank form. I could go on . . .

    One of my jobs near the end of the day was to clean up & diesel coat the exposed steel parts of the machine ready for the next day. The giant pistons had to be disassembled cleans and the reassembled. Disassembly involved a set of large truck spanners and sockets, some length of chain, and a forklift. Despite the machines size and ruggedness it was nicely made and parts of it were even precisely made. To aid assembly there were dozens of 6mm alignment pins and we were constantly losing a few each day on the concrete covered factory floor when i asked the foreman about spares he showed me how to make them using 6mm galv weld mesh with an abrasive saw and tidying them up a bit on a bench grinder. After about a month I noticed there were very few original ones left. despite the massive forces involved the newer pins seemed to work and last just as long as the originals.

    As a student I really liked that job as it was easy and well paid and moderately interesting. Unfortunately it was not available in the following summer but I managed to find a job labouring in high rise construction which was interesting in its own way.

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