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  1. #1
    Join Date
    Jul 2021
    Location
    ACT
    Posts
    12

    Default Boring a hole in cast iron hand wheel

    Hi all,
    New to any form of metalworking. I am making a woodworking workbench and I'm looking to bore a hole in a hand wheel to fit 1-1/8" vise shaft. The only drill bit I have in that size is a spur auger bit, that's stated to be specifically for wood. I'm wondering whether I can use that in a pinch. I don't know what the bit is made from, but I'm pretty sure it's harder than cast iron. I have a 22mm HSS bit, so I can bore it to that size first. I will be doing this on a drill press.

    Otherwise, what options do I have? I don't want to spend a lot on a bit I'll only be using once.

    If it helps, my bit is this:
    https://www.milwaukeetool.com/Produc...its/48-13-1120

    And the hand wheel I'm looking to get is this:
    https://mcjing.com.au/cast-iron-hand-wheel.html

  2. #2
    Join Date
    Nov 2008
    Location
    North Brisbane. Qld. Australia
    Age
    70
    Posts
    1,511

    Default

    What size centre hole will the handwheel have?
    Nev.

  3. #3
    Join Date
    Jul 2021
    Location
    ACT
    Posts
    12

    Default

    Quote Originally Posted by SurfinNev View Post
    What size centre hole will the handwheel have?
    The handwheel comes with an 8.5mm hole

  4. #4
    Join Date
    Nov 2008
    Location
    North Brisbane. Qld. Australia
    Age
    70
    Posts
    1,511

    Default

    See if you can get a holesaw with that size pilot.

    Here's an example -

    https://www.tooled-up.com/bahco-arbo...s/prod/149490/

    Any idea on handwheel thickness?
    Nev.

  5. #5
    Join Date
    Jul 2021
    Location
    ACT
    Posts
    12

    Default

    Ah, so your idea is to drill all the way through? I'm not sure how thick it is - I can only tell visually from here (it's the 190mm I'm looking at) https://mcjing.com.au/cast-iron-hand-wheel.html

    I was thinking of drilling just enough to be able to drive a pin through.

    So the auger bit won't do?

  6. #6
    Join Date
    Jun 2007
    Location
    sydney ( st marys )
    Age
    64
    Posts
    4,887

    Default

    I would suggest you ask if someone could bore it for you.

  7. #7
    Join Date
    Jul 2021
    Location
    ACT
    Posts
    12

    Default

    Quote Originally Posted by SurfinNev View Post
    See if you can get a holesaw with that size pilot.
    https://www.mcmaster.com/hole-saws/d...drill-presses/

    Will this with a 1/4" arbor work? It's on a drill press so the centre hole being larger shouldn't matter, right?

  8. #8
    Join Date
    Nov 2008
    Location
    North Brisbane. Qld. Australia
    Age
    70
    Posts
    1,511

    Default

    If you want reasonable accuracy on the centre hole an 8.5mm pilot would be better. You can get a reasonably priced pilot and just get the holesaw you need and can always purchase other holesaws later if needed. 1 1/8" is 28.575mm so the holesaw will need to cut a fairly accurate hole. Most state a 1 1/8" holesaw as 29mm so will that matter. Depends on how true to size they are as well.

    Here's a Sutton so you will need the arbor to go with it.

    https://www.aimsindustrial.com.au/su...2-cobalt-bimet
    Nev.

  9. #9
    Join Date
    Jul 2021
    Location
    ACT
    Posts
    12

    Default

    Quote Originally Posted by SurfinNev View Post
    1 1/8" is 28.575mm so the holesaw will need to cut a fairly accurate hole.
    Would it be better to get 28mm or 29mm? I'm thinking it'd be better to go snug and use a file to get it to size.

    Seems like reduced shank drill bits are in the same price range as hole saw/pilot

  10. #10
    Join Date
    Oct 2008
    Location
    N.W.Tasmania
    Posts
    1,407

    Default

    I am with Pipeclay on this, I think that it would be better bored or perhaps drilled and then reamed if a particularly good hole is required. Holesaws in my experience aren't really round, but could have more than one milimetre runout for that size. There is a good chance that someone on this forum and with the required tooling lives not far from you, and would be willing to help you out. If you are going to tap that wheel 1 1/8", you want to hope that someone who already has the tooling will help you out as a tap that size will be $pendy, as will the drill bit if you can't get it bored out. Good luck

  11. #11
    Join Date
    Jul 2011
    Location
    Berowra Waters
    Posts
    149

    Default Boring

    Where are you? If you’re in Sydney, or Northern Sydney ( or elsewhere) I can bore it out exactly for you on the lathe or you could post it and I’ll do it, no problem at all.

  12. #12
    Join Date
    Nov 2008
    Location
    North Brisbane. Qld. Australia
    Age
    70
    Posts
    1,511

    Default

    Confused now. Do you want to bore to tap 1 1/8" or bore to 1 1/8"?
    Nev.

  13. #13
    Join Date
    Jul 2021
    Location
    ACT
    Posts
    12

    Default

    Quote Originally Posted by riverbuilder View Post
    Where are you? If you’re in Sydney, or Northern Sydney ( or elsewhere) I can bore it out exactly for you on the lathe or you could post it and I’ll do it, no problem at all.
    Hey, I'm in the ACT. thanks for the offer - I'll keep it in mind if I can't find an easy solution

  14. #14
    Join Date
    Jul 2021
    Location
    ACT
    Posts
    12

    Default

    Quote Originally Posted by SurfinNev View Post
    Confused now. Do you want to bore to tap 1 1/8" or bore to 1 1/8"?
    boring, not tapping

  15. #15
    Join Date
    Oct 2011
    Location
    Norwood-ish, Adelaide
    Age
    59
    Posts
    6,542

    Default

    Do youself a favour and get someone to bore it out. A hole saw or spade bit will give you a rough hole and won't be close enough in size - the fit on the shaft will be sloppy and you will not be happy with it. What is worse will be that there is likely no good fix for that so you will be up for a new handwheel.
    We have/ had a member here called Ewan (goes by the user name of Ueee) who lives in the Canberra region, although he has not posted for some time. Send him a personal message and he might be able to help you out. With the right tools it is not a hard job to do.

    Michael

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