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Type: Posts; User: BobL

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  1. Replies
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    The same if they are rated on "output" but some...

    The same if they are rated on "output" but some single phase motors only show "input" power on the name plate.
  2. A number of things would have been possible in...

    A number of things would have been possible in hindsight.

    A couple of positives is I now have a 750 mm taller press and a HD boss support that should come in hand for a number of processes,
  3. This morning I took a closer look at the motor...

    This morning I took a closer look at the motor shaft.
    It has distinct circular ridges on it.
    The ridges are easy to feel with a fingernail.
    I've never seen one like this.
    I wonder if they were...
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    I would wash it and then press some grapes in a...

    I would wash it and then press some grapes in a couple of small batches before doing bigger batches. If there is any loose stuff it should come away in the first batch or two and it should convert...
  5. Thread: Twiggy Forrest

    by BobL
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    427

    Humm . . . . . . I'm not holding my breath. ...

    Humm . . . . . . I'm not holding my breath. Brand ownership might stay in Oz but once Twiggy's accountants have their say, . . . . . look at what happened to Rossi and now partially to Steel Blue...
  6. The shaft did not extend up past the big or...

    The shaft did not extend up past the big or even intermediate pulley and was inside a boss covered by the big pulley.
    389328
  7. Not the large pulley, but managed to get the...

    Not the large pulley, but managed to get the bottom of the boss a dull red (could see it with the shed lights off) but didn't leave it too long as I was worried about over heating the motor itself.
  8. Removing a large flatbelt pulley from a 7.5HP motor

    The Mens shed has a 7.5HP motor with a 3 step (large diameter is 265mm) flatbelt pulley on it and they asked me If I would sell the motor. I thought it would be more saleable with the pulley take off...
  9. Thread: Newbie Asks!

    by BobL
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    463

    See if you can find an experienced turner you can...

    See if you can find an experienced turner you can watch and then get him to watch you turn so he (or she) can tell you what you are doing wrong.
    One hour with a pro will save 20 hours of youtube...
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    I gave the nephew some bits of plumbing and he...

    I gave the nephew some bits of plumbing and he managed to cast some small, sort of cylindrical shape,d blobs but now agrees that a small charcoal forge is not the way to do this. Im dreading him...
  11. Thread: More metal bluing

    by BobL
    Replies
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    10,024

    All done, 4 passes of fume bluing, except for the...

    All done, 4 passes of fume bluing, except for the long rod which had 2 passes of salt/H2O2 and two passes of fumes,. This seemed to fix the unevenness of the salt/H202 rusting.

    It seems to work...
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    I might get one and try it out before the pump -...

    I might get one and try it out before the pump - I hope it doesn't clog too quickly.
  13. Thread: More metal bluing

    by BobL
    Replies
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    10,024

    OK found a simple way to fume blue the 820mm long...

    OK found a simple way to fume blue the 820mm long rod.

    I added a 400mm long x 32 mm diameter Black HDPE irrigation pipe (Snorkel) to the fuming tank lid.
    The rod is suspended from the top of the...
  14. Replies
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    That would be my guess. The plastics used on some...

    That would be my guess. The plastics used on some motor fans do sometimes eventually become brittle and self destruct. Are there any chemicals/dusts near the motor?
  15. Replies
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    Let's see some pics. Without this we're basically...

    Let's see some pics. Without this we're basically guessing.
  16. Thread: More metal bluing

    by BobL
    Replies
    93
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    10,024

    OK a direct comparison between the Fume and...

    OK a direct comparison between the Fume and salt/H2O2 bluing.

    Top & bottom rods are fume/boiling water blued, middle one is salt/H2O2/steam blue
    This is after 4 time through the bluing cycle.
    ...
  17. Replies
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    330

    Watch out for aquarium type pumps that use a...

    Watch out for aquarium type pumps that use a permanent magnet motor inside the fluid flow path as these will gum up with the superfine swarf and no amounts of magnets inline will remove all this...
  18. Sounds like a plan but if it's Polyethylene or...

    Sounds like a plan but if it's Polyethylene or polypropylene even if it's roughed up the epoxy won't hold for long. Looks up plastic burn tests on the web - then cut off a thin sliver and see what it...
  19. Thread: More metal bluing

    by BobL
    Replies
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    10,024

    I had a go with the rusting solution (salt+H2O2)...

    I had a go with the rusting solution (salt+H2O2) and steam this morning.

    This is what it looks like after applying the rust soln with the rod held vertically.
    389207
    389208
    Because the rusting...
  20. What sort of plastic is it? You absolutely need...

    What sort of plastic is it?
    You absolutely need to know because you can't just use any old plastic as welding rods

    You can make rods yourself by cutting up 3 - 4 mm wide strips of the same...
  21. Thread: More metal bluing

    by BobL
    Replies
    93
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    10,024

    I've done a test run with a couple of shorter...

    I've done a test run with a couple of shorter pieces that were rusted in the fume bluing chamber.
    They don't look any different to boiling water conversion.
    To rust the longer piece I needed to...
  22. Thread: More metal bluing

    by BobL
    Replies
    93
    Views
    10,024

    I did come very close several times to throwing...

    I did come very close several times to throwing it.

    BTW after going under the house to drag out the insulation that I didn't use I also spied a tall rectangular SS water tank from a caravan I...
  23. Replies
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    Yeah almost anything that says sanding will...

    Yeah almost anything that says sanding will remove metal. I had quick look on the Bunnings website and see they no longer sell fine wire wheels for angle grinders - the only thing I can see are those...
  24. Thread: More metal bluing

    by BobL
    Replies
    93
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    10,024

    Steam power

    I decided to followup on using steam instead of hot water for the long object I'm trying to blue.

    I do have a piece of solid PVC pipe similar to what the fella in the Youtube video uses - standard...
  25. Thread: More metal bluing

    by BobL
    Replies
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    10,024

    Thanks - thats worth knowing. How does one then...

    Thanks - thats worth knowing.
    How does one then go for a subsequent purchase given account name is often email address and what if a dispute over purchased item?


    I'm using a mix of unused...
  26. Thread: More metal bluing

    by BobL
    Replies
    93
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    10,024

    The fake email address doesn't work - they send...

    The fake email address doesn't work - they send an email to it and if it bounces they hold your order. When I tried this with one vendor I got an SMS asking me to provided a valid email address. What...
  27. Replies
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    If it's an old vice, chances are it's painted...

    If it's an old vice, chances are it's painted with leaded paint and using an angle grinder with a wire wheel on this probably has as much risk as using a methylene chloride based stripper.
  28. Thread: More metal bluing

    by BobL
    Replies
    93
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    10,024

    I went on line to order it from Brownwells but...

    I went on line to order it from Brownwells but two things put me off pulling the buy trigger. The first was they don't keep them in stock and it has to come from the US. They say allow 21 days - HAH...
  29. Thread: More metal bluing

    by BobL
    Replies
    93
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    10,024

    Yep, havenít actually ordered It yet. Do you have...

    Yep, havenít actually ordered It yet. Do you have a cheaper source?

    Not too worried about the price as it will save me a lot of time and probably do a better job than hand carding.

    There will...
  30. Replies
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    As usual there's no "one" or even "best" way. ...

    As usual there's no "one" or even "best" way.

    If there's rust and paint missing it does sound like a "back to bare metal" is the way to go.

    1) Firstly of course you will need to dismantle it ...
  31. Thread: More metal bluing

    by BobL
    Replies
    93
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    10,024

    Perfect - I even have the right sort of thick PVC...

    Perfect - I even have the right sort of thick PVC pipe for the job!

    However, I will still need some sort of a hot tank to clean up the work pieces but maybe that can be done manually with such a...
  32. Thread: More metal bluing

    by BobL
    Replies
    93
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    10,024

    Thanks for the ideas Stu, Yep, but not that...

    Thanks for the ideas Stu,


    Yep, but not that much if the trough was covered.


    Yep


    Yep - a distinct possibility.
  33. Thread: More metal bluing

    by BobL
    Replies
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    10,024

    I could but I can see myself doing longer objects...

    I could but I can see myself doing longer objects in the future so its going to be handy to have a longish setup.
  34. Thread: More metal bluing

    by BobL
    Replies
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    10,024

    Yeah I reckon I'd need at least 5, maybe more At...

    Yeah I reckon I'd need at least 5, maybe more
    At 240W each that's only 1200W.

    A 50mm ID pipe ~1m long holds about 2L so about domestic kettle size but kettles are usually ~2kW and also use...
  35. Thread: More metal bluing

    by BobL
    Replies
    93
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    10,024

    Not sure. Might have to do some experimenting.

    Not sure. Might have to do some experimenting.
  36. Thread: More metal bluing

    by BobL
    Replies
    93
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    10,024

    900 tall with

    I have a 820mm long 12mm diam steel rod I want to blue.
    It won't fit into my fume bluing tank so I'm going to use the H2O2 and salt method.
    To set the blue I need to put it into boiling distilled...
  37. Thread: flat belt

    by BobL
    Replies
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    211

    I thought it would be.

    I thought it would be.
  38. Replies
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    517,157

    Hand vice

    This was supposed to only take a few hours but as usual things got complicated and it's taken me a lot longer.

    The origins of this project was I had to drill a number of 2.3mm diameter holes...
  39. Thread: flat belt

    by BobL
    Replies
    7
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    211

    I have the flat belts (one is new spare belt)...

    I have the flat belts (one is new spare belt) from an old thicknesser that I am about to dispose of.
    They will probably be too big (and maybe too thick) but might be able to be adopted?

    389114
  40. Replies
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    i'd like to see a close up photo of it laying on...

    i'd like to see a close up photo of it laying on a ruler with mm markings on it.
  41. Thread: Power Factor

    by BobL
    Replies
    48
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    1,303

    try this;...

    try this; https://electrical-engineering-portal.com/how-reactive-power-is-helpful-to-maintain-a-system-healthy
  42. Thread: Power Factor

    by BobL
    Replies
    48
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    1,303

    Think of a moving pendulum - the velocity is...

    Think of a moving pendulum - the velocity is greatest when the displacement from its original rest position is zero. And its velocity is zero when it's displacement is greatest.
  43. Thread: Power Factor

    by BobL
    Replies
    48
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    1,303

    In a capacitive circuit, in terms of "any one...

    In a capacitive circuit, in terms of "any one point in time" it not the "absolute" volts but the "change in volts" that determines the current. So during a mains cycle, when the absolute voltage is...
  44. Thread: Torque Wrench

    by BobL
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    747

    I have a 1/2" drive (120ft/lbs) W&B that I bought...

    I have a 1/2" drive (120ft/lbs) W&B that I bought in 1974. Only issue with it was it didn't do left hand threads so had to buy a new one to tighten the clutch hub on there big Stihl chainsaw. BTW the...
  45. Thread: Torque Wrench

    by BobL
    Replies
    14
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    747

    They do look real nice. When an old...

    They do look real nice.

    When an old analytical instrument was scrapped at uni the specialised tools that came with it were also turfed out. This included a bunch of triangular/square and...
  46. Thread: Power Factor

    by BobL
    Replies
    48
    Views
    1,303

    I recently made up 15A power box with Power...

    I recently made up 15A power box with Power meter with PF display and a C16 breaker
    https://www.woodworkforums.com/attachment.php?attachmentid=479473&d=1598338332
    389026...
  47. Replies
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    Yep that's How I use mine. I have one handle...

    Yep that's How I use mine.
    I have one handle that holds a hacksaw blade cut to a tapered sharp point. I use this to cut out small rectangular switch holes in plastic project boxes. Drill ~6mm hole...
  48. Replies
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    Thanks Kryn. I always thought the battery in my...

    Thanks Kryn. I always thought the battery in my best helmet was rechargeable and have never replaced it since I bought it about 5 years ago! I'm pretty happy with that.
  49. Replies
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    Finally got round to installing battery - all...

    Finally got round to installing battery - all good.
  50. Replies
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    I'm not sure about "fine". Yes it will work but...

    I'm not sure about "fine". Yes it will work but 25V DC is going to generate lots of gas, erode the anode and contaminate teh electrolyte with sludge pretty quickly - Somewhere between 3 and 6V is...
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