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  1. Thread: Annular Cutters

    by jhovel
    Replies
    38
    Views
    782

    Just for interest's sake: I can supply M&G HSS or...

    Just for interest's sake: I can supply M&G HSS or Cobalt(M42) annular cutters at a better price than M&G. Just PM me.
  2. Replies
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    May I suggest you keep looking on ebay.de MUCH...

    May I suggest you keep looking on ebay.de
    MUCH higher chance of finding one in Europe.
    I managed to get some very odd versions: a 42V version for use in ship workshops and a compressed air driven...
  3. Thread: I'm back

    by jhovel
    Replies
    5
    Views
    679

    Welcome back from me too! Only great memories of...

    Welcome back from me too!
    Only great memories of your interesting questions. Do you have a new workshop now?
  4. Thread: DIY TIG Pedal

    by jhovel
    Replies
    62
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    4,778

    When the pedal is not depressed, the welder is...

    When the pedal is not depressed, the welder is 'Off'. There is a microswitch which turn it on as soon as you depress the pedal a fraction....
  5. Hi Steve, from memory, the '48 Chief had a...

    Hi Steve,
    from memory, the '48 Chief had a silver coloured kick start lever and gear. I would get it nickel plated to prevent rust or corrosion. It won't help much with friction reduction, but...
  6. Thread: DIY TIG Pedal

    by jhovel
    Replies
    62
    Views
    4,778

    Your assumption is correct: 5V is max current and...

    Your assumption is correct: 5V is max current and 0V is min.
  7. Thread: DIY TIG Pedal

    by jhovel
    Replies
    62
    Views
    4,778

    I'll try it tomorrow and report what I find....

    I'll try it tomorrow and report what I find.
    Essentially I want to use the panel pot to limit the maximum I can reach with the pedal. That also means I should get better resolution with the pedal...
  8. Thread: DIY TIG Pedal

    by jhovel
    Replies
    62
    Views
    4,778

    Yes, the X denotes where the original connection...

    Yes, the X denotes where the original connection is cut. It's the 0-5V output from the panel pot, now sent via the pedal pot for further voltage division. Vcc is the 5V line.
    Thanks for the...
  9. Thread: DIY TIG Pedal

    by jhovel
    Replies
    62
    Views
    4,778

    John, that explains in principle why there will...

    John, that explains in principle why there will be a difference, but your example shows that the MAXIMUM current setting should be less - which it isn't.... maybe 0.05V isn't enough to change...
  10. Replies
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    363

    I bought and use one of these:...

    I bought and use one of these:
    https://www.youtube.com/watch?v=yyJZFzLnSGE
    I have used it with a car battery and with a RC battery like in the video. Both work perfectly fine. Listen to his warming...
  11. Thread: DIY TIG Pedal

    by jhovel
    Replies
    62
    Views
    4,778

    John, the current control is done by voltage, not...

    John, the current control is done by voltage, not resistance. So the panel resistor is set to the maximum voltage for the job (originally going straight to the control module - 5Vmax) and the pedal...
  12. Replies
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    535

    Well done John. Reassure your wife that the...

    Well done John. Reassure your wife that the "machinery" they refer to as not being allowed to be operated is forklifts, tractors and excavators kind of machinery, NOT hand-tools, lathes and milling...
  13. Thread: DIY TIG Pedal

    by jhovel
    Replies
    62
    Views
    4,778

    Been following this thread with interest! I have...

    Been following this thread with interest!
    I have connected my effort in the following circuit - and would like some critique, because it has for some reason slightly increased the indicated minimum...
  14. Replies
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    440

    Pay for what? And what links? I suspect you are...

    Pay for what? And what links? I suspect you are talking about the Tapatalk app. It has both a free and a paid version.... This forum is certainly free...
  15. Replies
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    No trigger on blow torches.... Also: those...

    No trigger on blow torches....

    Also: those blow torches are now worth at least $50 when cleaned up! I just sold my last one of Facebook Marketplace....
    You can buy a LOT of spray bottles for...
  16. Replies
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    231

    WTB: 1Hp - 0.75kW - 2-pole 3-phase motor

    I'm looking for a 3-phase motor running at around 2880rpm in as small a frame as I can find. I suspect some sort of waterpump or industrial pump is the most likely candidate. The frame could be...
  17. Replies
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    271

    The motor and pump make a great hydraulic power...

    The motor and pump make a great hydraulic power unit for a press or other workshop equipment.This one even has hoses and a removable cylinder!
    And these things work very well for firewood splitting....
  18. Of course I've sliced it already to see how it...

    Of course I've sliced it already to see how it would fit on my printer. It is nearly flat on the back of the diamond pattern, which is the back or bottom. No gret issues there. The only support...
  19. I've had things warp, but don't recognise any...

    I've had things warp, but don't recognise any issues with this shape. It has a very large area - though with diamond shaped holes in it - to adhere to the build bed. The edge overhang is likely to...
  20. Anyone here with a printer that can do a 260 x...

    Anyone here with a printer that can do a 260 x 130 x 30mm (ABS or PLA)?
    I'm helping a friend restore a 1983 Honda CX650Turbo (very rare, no spares available). I borrowed a fairing grill from an...
  21. Replies
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    1,053

    Welcome aboard! What kind of stuff are you...

    Welcome aboard!
    What kind of stuff are you intending to make?
  22. I suspect the grinding wheel you originally used...

    I suspect the grinding wheel you originally used was blunt or loaded with aluminium or zinc. So it overheated quickly.... Also, your new steel may be thicker, and therefore not blueing as easily.
  23. ...and if it is a minimum size, you could silver...

    ...and if it is a minimum size, you could silver solder or braze a short bit of mild steel to the chuck end and fil/grind it to the size of the carbide bit before regrinding it....
  24. Yes, I submitted my modification details and they...

    Yes, I submitted my modification details and they were approved.
    In fact, my machine developed a fault with the motherboard that Deni and I went through trouble shooting and I ended up sending my...
  25. Thread: Window weights

    by jhovel
    Replies
    8
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    537

    That is lucky - or I've been unlucky. I was...

    That is lucky - or I've been unlucky. I was talking from my own experience - which, as you say, is reflected in other posts. None of my stack could even be cut with a bandsaw.... so I stopped trying...
  26. Thread: Window weights

    by jhovel
    Replies
    8
    Views
    537

    Greg. While they are cast iron, almost all of...

    Greg. While they are cast iron, almost all of them are chilled cast iron and near impossible to machine.... just saying....
  27. The last question first: you click on the "reply...

    The last question first: you click on the "reply to thread" under the left of the last message instead of "reply with quote" on the right...
    Continuing backwards: if you melt the electrode away,...
  28. Brian, it sounds like you got the wrong pedal or...

    Brian, it sounds like you got the wrong pedal or one if its connections is bad or missing. It should definitely turn on and of, but start at the lowest setting and top out at the setting on the...
  29. Replies
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    813

    I've had the same thing happen a couple of melts...

    I've had the same thing happen a couple of melts ago. No water even touched the metal! I immersed the steel molds full of seemingly solidified aluminium into a dish of water. The aluminium level...
  30. I've had a cheap diamond wheel with run out. I...

    I've had a cheap diamond wheel with run out. I elected to measure the runout, then scrape the bore on the high side and shim on the low (inside the hole) until it was running true. That fixed it AND...
  31. Replies
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    1,126

    What's wrong with using a tool made for this...

    What's wrong with using a tool made for this exact purpose?
    390591
    e.g. https://www.ebay.com.au/itm/293622208439
    They are available in just about any size combination....
  32. Replies
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    I avoid using large solid carbide cutters bigger...

    I avoid using large solid carbide cutters bigger than 12mm because of the expense.... I do use carbide insert endmills in larger sizes. I find that more economical given my propensity to chip...
  33. Replies
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    I hope your forum nickname doesn't have anything...

    I hope your forum nickname doesn't have anything to do with being an electrician.... because this is VERY wrong information!

    PS: I put this blunt response here not to embarrass anyone, but to warn...
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    Let's know how you go, please. However, cast...

    Let's know how you go, please.
    However, cast iron was a choice of material made at the time out of necessity, not functionality.
    It is a bad choice in the context of an adjusting screw opposite the...
  35. Thread: Trolly Jack Mod

    by jhovel
    Replies
    17
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    1,039

    2.5x12 is the size used in Nylex and clones...

    2.5x12 is the size used in Nylex and clones garden hose fittings, I think. That's possibly why they were out of them....
  36. Yes, Michael.... :) Come to think of it, I do...

    Yes, Michael.... :) Come to think of it, I do know someone with a pantograph router. But since the job is 200mm across, the pattern would need to be at least 1.4 times as big. That just puts it out...
  37. Still experimenting with set ups using aluminium...

    Still experimenting with set ups using aluminium tread plate as a press tool. Trying different temperatures and process. Looks like 130 is the ideal temperature. Leaving the foam off works better....
  38. Replies
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    I've just had a go with a clear Pyrex cup. Quite...

    I've just had a go with a clear Pyrex cup. Quite a bit of difference!
    Better light on the weld area and I can see the tungsten tip very clearly through it - much fewer 'dips'.... I think the gas...
  39. Thanks fr the suggestions Michael. The letters...

    Thanks fr the suggestions Michael. The letters are actually no solid - they are outline fonts and the impressions are only a mm or less wide... but keep ideas coming....
  40. Reducing the depth to 3mm should work. The...

    Reducing the depth to 3mm should work. The pressing is done with a thin layer of foam behind the vinyl, so quite flexible. But 3mm deep relief should be OK. We don't want to melt the vinyl on the...
  41. Aluminium - any grade will be fine.

    Aluminium - any grade will be fine.
  42. You may be right, Michael. I'll see what we can...

    You may be right, Michael. I'll see what we can come up with. I have a few 10 deg D-bit cutters with a few thou flat on the end that may do it. Alternatively, I could reduce the draft angle to closer...
  43. CNC job request for quote/interest - an enthusiast project, not commercial

    Anyone here interested in a project and/or a quote?
    It's an almost 2D job but with draft. Its a flat hot press tool for a collaborative project for a small band of enthusiast....
    Around 200x65mm...
  44. Thanks Greg. Had a look at all your videos and...

    Thanks Greg. Had a look at all your videos and posts.
  45. Replies
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    I went there and had a look. Actually I bought a...

    I went there and had a look. Actually I bought a couple of micrometers too.... as you do....
    There is a lot of specialised measuring equipment - but not a garage sale prices. Some very large...
  46. Hi Greolt. Thanks for the offer! What software...

    Hi Greolt.
    Thanks for the offer! What software do you use to drive your plasma?
    Any photos of your setup? I'm actually contemplating building one for myself.... but it is down the list a bit.... :)
  47. Replies
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    I haven't been able to find hacksaw blades thick...

    I haven't been able to find hacksaw blades thick enough. They need to be at least 2.5mm thick. I found strips of circular saw blades to work well, with a piece of tungsten carbide brazed on the end....
  48. That is truly a ripper! Well spotted! Looking...

    That is truly a ripper! Well spotted! Looking forward to it's reanimation....

    Cheers
    Joe
  49. Merry Christmas and a pleasant New years to all my metalworking friends!

    Hope 2021 will be less memorable but more exciting and enjoyable for you all!

    Cheers
    Joe
  50. Replies
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    Our Subaru Brumby has front disks with the...

    Our Subaru Brumby has front disks with the parking brake integrated in the caliper cylinders. They work on a coarse thread system to give the required force. Not sure if they are too small for your...
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