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Type: Posts; User: m.j.bower.69

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    VIC Hafco BS-912 bandsaw

    As the title says, I have a Hafco BS-912 bandsaw for sale. The Hafco website has all the details.

    Got this through a mate as it was 'broken'. It just needed new bearings in the gear box. The...
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    Welder repairs in Melbourne?

    Hi all, I have a Transtig 150 that I've only ever used for stick welding. My boys have decided that they want to try fabricating so I went and got some argon. Turns out it won't tig.
    We get the...
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    How about Lye Waste? Does that make sense? ...

    How about Lye Waste? Does that make sense?

    Made from from the leftovers of bigger anvils... https://uploads.tapatalk-cdn.com/20191027/fe2c854985733f0acfa45d4e5968f4cc.jpg

    Sent from my H4133...
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    That fits. Want to try for what's underneath...

    That fits. Want to try for what's underneath that?

    Martin

    Sent from my H4133 using Tapatalk
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    Steve, I can't make out the writing above the JF....

    Steve, I can't make out the writing above the JF. Here's a closer photo in case anyone can work it out.

    Martin https://uploads.tapatalk-cdn.com/20191024/88b06ca783308b1bdc6cc6f2a11e9ea0.jpg
    ...
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    Here's our anvil, plus one of our non-anvil...

    Here's our anvil, plus one of our non-anvil anvils.

    The first pic is a small anvil, about 280mm from heel to horn. It was used by my partner's great grandfather who used to be a jack of all trades...
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    Boris, you've called it out correctly. The...

    Boris, you've called it out correctly. The finished screw has a rough thread. I'm still not sure why it cut like that. The clean thread was slightly oversize.

    Seeing it on the bigger screen of my...
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    An update. After four attempts and a lot of...

    An update. After four attempts and a lot of learning, I got one that works. Nice sliding fit in the nut.
    I even cut a key way! I used a hss parting tool lying sideways in the lantern post, locked...
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    The cold chisel comment was a joke. Clearly not a...

    The cold chisel comment was a joke. Clearly not a good one...

    In other news I finally got a good thread on my 4th practice run, so set up my blank and started in.

    I've knocked up a mandrel...
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    I thought it was a reference to the giant ferris...

    I thought it was a reference to the giant ferris wheel down at Docklands.

    I'll probably make something like that expanding arbor. I think I actually have something like that from an old washing...
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    So thanks to the help of pipeclay I set up the...

    So thanks to the help of pipeclay I set up the change gears, ground a hss tool, and had a go at cutting the acme thread.

    I was happy with this for my first go. I'll cut another one for practice...
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    Awesome, easy to understand instructions that...

    Awesome, easy to understand instructions that directly answer my question.
    Thanks Pipeclay.

    Sent from my H4133 using Tapatalk
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    Cutting a 2mm pitch 3/8 acme thread

    So I'm up to cutting the thread on the replacement compound feed screw.

    Putting the gearbox in 2mm pitch mode works for a normal triangular thread, but looks way too small for the acme thread.
    ...
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    Phil, you are missing something. I'm remaking the...

    Phil, you are missing something. I'm remaking the screw for the compound. There is nothing wrong with the existing nut.

    As for the die, I assumed that it would marked with the size, but wondered...
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    I get where you're coming from. My view is that...

    I get where you're coming from. My view is that firstly the lathe is a tool, and I want it to work. If that means making changes so that it works for me and I can fix it, then I will.

    That said,...
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    Okay, I might make a new nut in metric. I don't...

    Okay, I might make a new nut in metric. I don't have any whitworth dies.

    Martin

    Sent from my H4133 using Tapatalk
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    Thanks Mal. I had a suspicion that there was...

    Thanks Mal.

    I had a suspicion that there was something NQR about the threads on these metric Hercus 9s. I probably read it in one of your threads somewhere.

    Can you confirm what the thread is...
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    Oh, and I'm using 1214 free machining steel. ...

    Oh, and I'm using 1214 free machining steel.

    Martin

    Sent from my H4133 using Tapatalk
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    I haven't cut the threads yet, just turned a...

    I haven't cut the threads yet, just turned a blank. Hopefully I'll get some time this weekend.

    I'll single point it, light cuts to sneak up on final size, using the feed nut to test. I have an...
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    I got a bit of quality shed time in last night...

    I got a bit of quality shed time in last night and managed to knock up a copy of the feed screw for threading. Had to sharpen the cold chisel a couple of times. I'll probably try a test run on...
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    Thanks Michael, I think I'll hone the acme hss...

    Thanks Michael, I think I'll hone the acme hss tool I have and give it a run.
    Obviously it's a 2mm pitch given the feed dial.
    I turned up a blank this afternoon. Hopefully I'll get some shed time...
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    Yep, I've checked the pitch. It's the form that...

    Yep, I've checked the pitch. It's the form that I'm asking about.

    Martin

    Sent from my H4133 using Tapatalk
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    Thanks for the suggestions. Can anyone answer the...

    Thanks for the suggestions. Can anyone answer the question I asked?

    I have tried straightening it, but I can't get it completely flat.

    I could buy one of course, but this is an opportunity to...
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    ARM compound screw

    Finally getting around to doing something about the slightly bent screw on my metric Hercus. Can anyone confirm whether the screw is trapezoidal or acme?
    The dials say 2mm per revolution.

    And a...
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    Interesting. Thanks! Sent from my E5823 using...

    Interesting. Thanks!

    Sent from my E5823 using Tapatalk
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    What other info? I wouldn't expect that it would...

    What other info?
    I wouldn't expect that it would be marked as made in England if it was just a home-made tool.

    Martin

    Sent from my E5823 using Tapatalk
  27. Yeah, I'll give that a go. It's only bent at the...

    Yeah, I'll give that a go. It's only bent at the small threaded end, so I feel like it's more likely to snap at the transition from the larger acme thread.

    The compound screw is stuffed though. I...
  28. Ah yes, got that wrong. Thanks. Martin ...

    Ah yes, got that wrong. Thanks.

    Martin

    Sent from my E5823 using Tapatalk
  29. Cheers, for both the source and recommendation....

    Cheers, for both the source and recommendation. I'll follow it up.

    Martin

    Sent from my E5823 using Tapatalk
  30. Never heard of it. Sent from my E5823 using...

    Never heard of it.

    Sent from my E5823 using Tapatalk
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