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Type: Posts; User: nadroj

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  1. Replies
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    That would be very useful, thanks elanjacobs. ...

    That would be very useful, thanks elanjacobs.

    Jordan
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    That had me looking for a dictionary. Harrage...

    That had me looking for a dictionary.
    Harrage doesn't appear in my SOD.
    There are some references to the word online. There it means harass or plunder.
    I guess it means something else in...
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    I was hoping to have a flat enough result without...

    I was hoping to have a flat enough result without grinding afterwards.
    Is water-cutting better than laser in this regard?
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    Excellent, thanks Steve. I should be able to get...

    Excellent, thanks Steve.
    I should be able to get something done now.
    I'll see if my CAD friend can do the drawing.

    Thanks to all,
    Jordan
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    To have a stamping die made would be hugely...

    To have a stamping die made would be hugely expensive, I think?
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    Thanks for the helpful tips, folks. It's good to...

    Thanks for the helpful tips, folks.
    It's good to learn the different capabilities of machines.

    Maybe I over-emphasised the need for accuracy. Used plates always get distressed around the spliney...
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    Here's a sketch. If the inside corners can't...

    Here's a sketch.

    If the inside corners can't be made without a radius, I guess they could be undercut?
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    Between 2 and 4mm thickness.

    Between 2 and 4mm thickness.
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    CNC metal cutting questions

    I want to have some metal cutting done, either by water, laser or plasma.
    What would be a good choice of method for accuracy and smoothness?

    Also, what would be the diameters of the cutting tip...
  10. Thread: Hercus ID

    by nadroj
    Replies
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    1,430

    Some info: http://steammachine.com/hercus/ ...

    Some info:

    http://steammachine.com/hercus/

    https://www.youtube.com/watch?v=uPJ5GDe2EWU
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    VIC Mine arrived, thanks Steve. You've done a nice...

    Mine arrived, thanks Steve.
    You've done a nice job of packaging to protect them in transit.

    Jordan
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    Hi Bob, Pulley sizes measured with vernier...

    Hi Bob,

    Pulley sizes measured with vernier calipers from my C-0 :

    External 43.7 at crown, 42.9 & 43.1 at edges.

    Internal 37.6 at crown, 36.0 & 36.2 at edges.

    Motor has a combined pulley...
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    What does it mean, to print with respect to a...

    What does it mean, to print with respect to a surface plate?
  14. Replies
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    3,382

    VIC That's what I was thinking. Thin cardboard...

    That's what I was thinking. Thin cardboard wrapped over the shaft should fill the gap.
    Please post 5 off to 2579.

    Jordan
  15. I saw an induction motor in an electroplating...

    I saw an induction motor in an electroplating shop, that was set up to remove rust.
    The motor wasn't huge, no more than one horsepower I think, and quite slow - under 1,000 rpm.
    An interesting...
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    SA Yes please. Jordan

    Yes please.

    Jordan
  17. Replies
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    This might be appalling to hear, but I used...

    This might be appalling to hear, but I used newspaper as temporary shims on my Hercus 9 headstock.
    It has been left like that for many years with no problems.

    It was a quality broadsheet...
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    I have used shipping containers more than once...

    I have used shipping containers more than once for this purpose.
    Tips:
    Make sure it's waterproof, lockable and that the locks and door open/close easily.
    See if you can have container delivered on...
  19. Thread: Jenson lathes

    by nadroj
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    527

    I have never seen a Jenson lathe before. It...

    I have never seen a Jenson lathe before.
    It looks a sturdy design, with its integrated headstock & bed.
    The overhang on the left end suggests it might have been pedal-driven originally.
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    I have 2.7 gigabytes of general documentation on...

    I have 2.7 gigabytes of general documentation on shapers, plus more on specific models.
    Would you be interested in it? I'd need you to send me a USB stick or something.

    Jordan
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    Thanks for the tip, J&H. Yes, that's the 3...

    Thanks for the tip, J&H.

    Yes, that's the 3 piece ring I want.

    This firm says they can supply a ring in the required size: https://www.autosurplus.com.au/

    I ordered it and a scraper ring for...
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    That's a neat solution. When rolling long...

    That's a neat solution.

    When rolling long pieces, vertical roller orientation helps prevent them from straightening themselves due to weight of the bent part, soaring into the heavens.
    A suitably...
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    Thanks Sparksy, The landline phone number has...

    Thanks Sparksy,

    The landline phone number has been disconnected, now they are using moble number 0411 864 249.

    George at HB Sales had a look and could only find a ring that is a different...
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    Thanks familyguy & China. I won't deal with JP...

    Thanks familyguy & China.

    I won't deal with JP as they gave me wrong info in the past so I wasted money.

    I have some Cord rings that I bought for another bike. They look like a stack of...
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    2,288

    Looking for a piston ring

    I want to replace a one piece, iron oil scraper ring with a multi-piece steel type.
    It's for a single cylinder motorbike engine.

    Dimensions are to suit cylinder bore size of 87mm, ring groove...
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    I haven't done it, but it's possible alright. I...

    I haven't done it, but it's possible alright.
    I have some bearings with shaft size in inches, housing size metric. They are reground imperial bearings.

    Someone told me he had a job regrinding...
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    It might be worth an experiment with batten...

    It might be worth an experiment with batten screws, which are countersunk and have a large head with hex socket.

    I built my carport using these "wood screws", predrilling the 3mm wall thickness of...
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    Check that there isn't another grub screw...

    Check that there isn't another grub screw underneath the visible one.

    To unsieze the dial from the shaft, try this:

    Wind the handle clockwise all the way until the shaft disengages from the...
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    There's a grub screw that can be loosened,...

    There's a grub screw that can be loosened, allowing the dial ring to turn, then re-tightened.
    On my 260 it has a hex socket for an Allen key.
    Some replace the grubscrew with a finger-operated...
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    I have one of those, like it very much. May I...

    I have one of those, like it very much.
    May I offer some advice?
    The space behind the apron is prone to collecting debris.
    Remove it and clean out the clutch housing.
    I've seen these so jammed...
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    I bought a "$10" ringlight with a threaded brass...

    I bought a "$10" ringlight with a threaded brass insert for a bolt.
    It's a funny thing - 6mm diameter but with imperial coarse 1/4" thread.
    A 1/4 UNC setscrew was turned down to 6mm and all is OK.
  32. Yes, the range of radius size is limited, but...

    Yes, the range of radius size is limited, but it's a simple tool - make a new vertical rod for minimal overhang.
    It's not a convex making tool.

    A broad-faced cutting bit isn't needed, just a...
  33. One like this on ebay, Kryn....

    One like this on ebay, Kryn.
    ebay.com.au/itm/354958793980

    Results are good enough for some jobs, but the tubes get somewhat oval at the bends.
  34. Nice but it doesn't have to be so elaborate a...

    Nice but it doesn't have to be so elaborate a tool, nor a big lathe.
    Here's mine using a HSS bit, on a Hercus 260.
    To turn the vertical bar there is a simple handle, just visible at top of photo....
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    I went for a weekend ride, now have 300...

    I went for a weekend ride, now have 300 kilometers on the PLA gear.
    It has worked perfectly so far.
    Removed and cleaned, result is a slightly more furry-looking gear, with wear on the ends of the...
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    You are brave to attempt such a diameter with a...

    You are brave to attempt such a diameter with a single setting of the blade.
    Unless it's perfectly perpendicular, some side rubbing will occur, which could give snappy results.
    I'd probably do it...
  37. Replies
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    A fly-cutting operation, with the tilting head of...

    A fly-cutting operation, with the tilting head of a vertical mill turned 90 degrees.
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    If it needs to be a single weldment, so be it....

    If it needs to be a single weldment, so be it.
    But if it were possible to re-design it into a bolted up structure, it could incorporate adjustment slots as required to achieve accuracy.
    It would...
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    Or if you have a toolpost grinder, knock a...

    Or if you have a toolpost grinder, knock a millimeter or so off the diameter of the seal section, and fit a smaller ID seal?
    The shaft might have centre holes to facilitate that.
  40. Has anyone seen a clamp knurler where the...

    Has anyone seen a clamp knurler where the clamping effort is applied at the ends of the tool?
    That is, instead of (from tool post end): fulcrum - effort - load, the order is fulcrum - load - effort....
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    I don't know. How to find out?

    I don't know.
    How to find out?
  42. Replies
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    Thanks Neil. That might be the way to go, unless...

    Thanks Neil. That might be the way to go, unless there's a metal spraying process that can give a reasonably fine finish.
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    Thanks Kryn. I rang a rep from McElligotts who...

    Thanks Kryn. I rang a rep from McElligotts who explained that while it would be possible to spray aluminium (wire method), the result would be likely too coarse - like the roughest grade of sandpaper.
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    737

    That is an interesting, paint type product. The...

    That is an interesting, paint type product.
    The photos are impressive. I don't want it to look too good!
  45. Replies
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    737

    Cosmetic metal spraying?

    I have an iron motorbike finned cylinder head, that I want to change the looks of.
    I was wondering if it is possible to metal spray aluminium onto it?
    And would it last?

    Background:
    In 1950,...
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    I also have heard the holes themselves being...

    I also have heard the holes themselves being referred to as centres.
    It seems that context is important.
    It's not as if you could mistakenly order a hole when you might actually need a morse taper...
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    Lathe turning definition?

    A friend asked me for the correct name of the tapered holes at each end of a workpiece to be turned "between centres".
    He's looking for the unambiguous textbook definition.
    The centre itself refers...
  48. Thread: Emo 2023

    by nadroj
    Replies
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    1,931

    Nice idea to use chains to fasten job to table's...

    Nice idea to use chains to fasten job to table's T slots.
  49. Thread: Emo 2023

    by nadroj
    Replies
    25
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    1,931

    Maybe it has a feature that prevents rotation of...

    Maybe it has a feature that prevents rotation of the milling head if it's moved up/down.
  50. Replies
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    Weather is getting better for motorbike riding,...

    Weather is getting better for motorbike riding, so I added another 70km on the odometer today.
    Total = 120km on the new printed plastic speedo drive gear.
    It's functioning well so far.

    Jordan
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