Results 1 to 7 of 7

Thread: Soft (aluminium) punch

  1. #1
    Join Date
    Feb 2011
    Location
    Hobart, Tasmania, Australia
    Posts
    3,770
    Total Downloaded
    0

    Question Soft (aluminium) punch

    I need to service my Ashcroft CV joints and the instructions specify to use a soft (aluminium) punch to remove the cage. Any ideas where I can source one?


  2. #2
    Join Date
    May 2014
    Location
    Tamworth NSW
    Posts
    4,291
    Total Downloaded
    0
    Will brass work?? Brinnell hardness of 60
    softer than aluminium at BHN of 90.

    Otherwise scrap bins at metal merchants, find an offcut of some suitable bar stock and clean it up. Or even machine shops (parted off ends from thier lathe etc)
    -Mitch
    'El Burro' 2012 Defender 90.

  3. #3
    Join Date
    Jan 1970
    Location
    Irymple, Victoria, Australia
    Posts
    2,900
    Total Downloaded
    0
    Jimy Tools do brass punch sets.
    Otherwise as was said above, get aluminium or brass stock and make your own.


    https://www.jimytools.com.au/product...ools/striking/


    Cheers, Mick.
    1974 S3 88 Holden 186.
    1971 S2A 88
    1971 S2A 109 6 cyl. tray back.
    1964 S2A 88 "Starfire Four" engine!
    1972 S3 88 x 2
    1959 S2 88 ARN 111-014
    1959 S2 88 ARN 111-556
    1988 Perentie 110 FFR ARN 48-728 steering now KLR PAS!
    REMLR 88
    1969 BSA Bantam B175

  4. #4
    Join Date
    Feb 2011
    Location
    Hobart, Tasmania, Australia
    Posts
    3,770
    Total Downloaded
    0
    I didn't realise that brass was softer. I think I have a brass punch at home already. Cheers.

  5. #5
    Join Date
    May 2012
    Location
    Adelaide Hills, SA
    Posts
    564
    Total Downloaded
    0

    Buy a metre of rod from a hardware store

    Hey, I just said it all in the title!!!!!!

  6. #6
    Join Date
    Feb 2015
    Location
    Melbourne
    Posts
    47
    Total Downloaded
    0
    The hardness of both brass and aluminium varies considerably with alloy, heat treatment (aluminium) and work hardening (brass and aluminium).

    Would start with a brass rod/punch and anneal it. Heat to red and quench. If too soft try an unannealed one.

    The softest would be pure aluminium (think 1100 is the closest readily available).

    Note that any rod is likely to be work hardened annealing brass is easy as above.

    Aluminium is trickier but any aluminium can be annealed - heat to ~540C hold for 30 min and quench. Difficult to do without the gear try heating one end in a fire and cut off the melted bit;
    quench and do the punch bit immeadiately as a lot of aluminium alloys will harden with time:
    https://en.wikipedia.org/wiki/Precipitation_hardening

    Note that heat and quench to anneal applies to most non ferrous metals, steel is different and would probably give a very hard and brittle result (martensite)

  7. #7
    Join Date
    Sep 2012
    Location
    Westlake ,brisbane
    Posts
    3,922
    Total Downloaded
    0
    Just go to scrap metal place & buy a bit of alum round bar , you should be able to buy an off cut., or an alum fabrication shop should have off cuts I have a few of different sizes & lengths.

Bookmarks

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
  •  
Search AULRO.com ONLY!
Search All the Web!