Holding things for drilling/milling etc.

Discussion in 'Techniques' started by Rob Pulham, 14 April 2021.

  1. Rob Pulham

    Rob Pulham Western Thunderer

    While re-watching David LO Smith's workshop video that he did for last years virtual show I was reminded that quite often the job itself doesn't present the biggest problem for machine tools it's holding the item securely in the right orientation that proves most challenging.

    Needing to drill out some cast brass brake hangers and shoes I was struggling on how to hold them because the castings were ever so slightly miscast meaning that each part had to be slightly tilted to get the hole to go through cleanly without coming out of the side of the casting.

    I thought I would share with you the method that I came up with.

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    I gripped the pliers in the small machine vice and bought the drill bit down in front of the part to check alignment, adjusting until the hole would pass through the casting correctly before aligning the drill bit over the point to be drilled.

    I have had these pliers for years and I removed the spring for a job and never put it back this means that the jaws stay where you put them so ideal for using both hands to do the set up.

    They have quite straight but quite narrow jaws (3mm for most of their length tapering to 2.6mm at the ends) and I wish I could buy another pair as using them for soldering many times has started to corrode the ends of the jaws.

    Then to start drilling grip the handles of the pliers to keep the part in place and operate the drill with the other hand. I had to keep minutely adjusting the angle as I drilled each end of each casting but all six were drilled both ends without mishap.
     
    Osgood, Len Cattley, David B and 11 others like this.
  2. oldravendale

    oldravendale Western Thunderer

    Bodgery of the highest order, Rob.:)

    Brian
     
    Rob Pulham likes this.
  3. simond

    simond Western Thunderer

    no, Brian, this is only second order bodgery.

    enjoy a possibly well-known example of a deeper approach

    [​IMG]

    S
     

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  4. paulc

    paulc Western Thunderer

    Having driven a forklift and knowing what can suddenly happen , I got the shudders when i looked at that picture thinking of how many things could go wrong .
    Cheers Paul
     
  5. Len Cattley

    Len Cattley Western Thunderer

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    Rob, where did you get the vice from, as I could do with a new one?

    Len
     
  6. Rob Pulham

    Rob Pulham Western Thunderer

    Hi Len,

    Sorry, I don't know what make it is. I bought it second hand some time ago.
     
  7. simond

    simond Western Thunderer

    I have an identical one that came with my Unimat. Putting two and two together, I assumed it was from that source but I’m not 100% sure.
     
    Rob Pulham likes this.
  8. John D

    John D Western Thunderer

    Definately ex- Unimat.....still have mine from the long departed lathe.....

    John
     
    Rob Pulham likes this.
  9. Len Cattley

    Len Cattley Western Thunderer

    I have ordered a new one from Amazon Germany, should get here buy Wednesday. Then I can carry on with the tender.

    Len