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  1. Replies
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    I have this machine, it came with a Jasic branded...

    I have this machine, it came with a Jasic branded operator's manual. There are three tables of welding settings:
    Welding current vs electrode diameter for steel using MMA (stick).
    Parameters for...
  2. Sold

    This machine is now sold.
  3. Yeah, I understand about the interstate travel....

    Yeah, I understand about the interstate travel. Keep in touch, I've just paid for another month on Machines4U, but if it hasn't gone by the end of the year I probably won't re-advertise until...
  4. Hi PDW. In the manual, the net weight is listed...

    Hi PDW.
    In the manual, the net weight is listed as 995kg, gross weight is 1199kg. So the grinder itself is under 1 tonne. I'm not sure exactly what makes up the difference between net and gross,...
  5. Price drop

    This machine is now up on Machines4U at $3990, negotiable for a quick sale. I really need to reclaim the shed space.

    It's a solid machine, and comes with a large magnetic base, seperate coolant...
  6. Price drop

    Now that lockdowns are over, I'm keen to sell this machine. Price drop to $4,500, or make me a sensible offer.

    Graham.
  7. NSW. Elliott 921 Automatic Surface Grinder

    I am reluctantly selling my Elliott 921 hydraulic surface grinder. I got it a few years ago together with a few other machines, but just don't have the room for it, and I desperately need to reclaim...
  8. Replies
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    Superglue the rivet and/or head in place, then...

    Superglue the rivet and/or head in place, then drill out as usual.

    Graham.
  9. Replies
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    Yeah, the motor and gearbox mount is heavy and...

    Yeah, the motor and gearbox mount is heavy and very clumsy, and means that the machine takes up twice the floor space - it hangs way out the back of the machine. I have an extreme space problem in my...
  10. Replies
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    17,353

    DrSven, That is looking great! You've...

    DrSven,

    That is looking great! You've encouraged me to get a move on with mine.

    Graham.
  11. Replies
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    Mine sure is heavy, especially with its gearbox...

    Mine sure is heavy, especially with its gearbox and motor mount, but maybe not 1.4t. The later models were geared head I think, so could well be this weight.

    Dr Sven, I have a good photographic...
  12. Replies
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    Wolsy, I have not made any progress on my 1941...

    Wolsy,
    I have not made any progress on my 1941 Nuttall lathe restoration. Things got very busy at work for me over the past couple of years, and I have not been in the workshop much at all, and not...
  13. Michael, Is that box is a wi-fi router as well...

    Michael,

    Is that box is a wi-fi router as well as a modem? If it has a wi-fi antenna inside then performance would be effected by the metal shelf and backing.

    If it's just a modem, then ignore...
  14. Replies
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    This is a situation where I would use the folded...

    This is a situation where I would use the folded piece of rag trick to stop the drill from chattering, keep it on centre and keep the hole round.

    Graham.
  15. Replies
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    I'd definitely paint it now it's apart. There...

    I'd definitely paint it now it's apart. There only appear to be 4 or 5 major pieces to paint. $40 of paint stripper, and $50 of colour matched enamel from Bunnings and you will have it looking like...
  16. Replies
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    2,677

    The two extra mounts are safety mounts and should...

    The two extra mounts are safety mounts and should not be in contact with the plate, instead being set a mm or so clear. They are there to catch the plate should something heavy be placed in one...
  17. Replies
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    2,677

    I think the OP was asking about whether the frame...

    I think the OP was asking about whether the frame should be braced, not whether the surface plate needs bracing. His frame appears to haver a nice three point mounting system for the surface plate,...
  18. Replies
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    2,677

    In my opinion that stand will be fine for a...

    In my opinion that stand will be fine for a surface plate. It's not like you are putting a heavy rotating machine on it. A surface plate by definition is dead, inert and motionless :)

    The frame is...
  19. I'd just get one of those magnetic spirit levels...

    I'd just get one of those magnetic spirit levels and attach it to the bottom edge of the table, then slide the table until it's level and bolt it down.

    Graham.
  20. Thanks Elan, I had left that pun for someone else...

    Thanks Elan, I had left that pun for someone else to pick up. And you did!

    Graham.
  21. Replies
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    How would you reference the grinding to the teeth...

    How would you reference the grinding to the teeth on the chuck? Or are you suggesting to just take an even amount off the jaw holding faces?

    Graham.
  22. Replies
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    Wouldn't that be (partial) cylindrical grinding?...

    Wouldn't that be (partial) cylindrical grinding? Not surface grinding?

    Graham.
  23. Replies
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    How would you do this on a surface grinder? The...

    How would you do this on a surface grinder? The clamping faces of the jaws on a 3 jaw chuck usually have a radius (like an ID), that you duplicate by using an appropriately sized clamp ring when you...
  24. I don't know about the Samsung phone, but I have...

    I don't know about the Samsung phone, but I have to thanks Chris for pointing out that I can tilt my iPhone to get a scientific calculator.

    But like Bob, I learnt engineering on a HP calculator...
  25. Hey eskimo, I wouldn't say hi-jacked, it just...

    Hey eskimo, I wouldn't say hi-jacked, it just went off on a tangent. But the sines were there from the start.

    Graham.
  26. Or two dimensions and the included angle. But...

    Or two dimensions and the included angle. But yes, I was not accurate, for the right triangle you only need two sides.

    Graham.
  27. Actually, I'm at -33.867476, 151.206982 right...

    Actually, I'm at -33.867476, 151.206982 right now :) That's decimal degrees, as opposed to the old "imperial" degrees, minutes, and seconds. Manually converting between the two is not fun.
    ...
  28. Two sides and one angle define the triangle,...

    Two sides and one angle define the triangle, everything else can be calculated from that. If you enter your two sides, it gives you the angle (plus the other sides and angles).

    Graham.
  29. Replies
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    Thanks Bill, Now I know what to make my farmer...

    Thanks Bill,

    Now I know what to make my farmer brother for his 60th birthday!

    I had no idea these existed.

    Graham.
  30. Replies
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    Very occasionally it's useful to be able to stick...

    Very occasionally it's useful to be able to stick a piece of larger stock fully back in the chuck, so a larger chuck bore can be useful there. But if you have another larger (4 jaw?) chuck you can...
  31. That must be a privilege of retirement. I can't...

    That must be a privilege of retirement. I can't wait.

    Someone here at work from our software group just repeated a great quote: Today is the only day of the year where people critically view...
  32. Ahh Bob, you spoiled it :) Graham.

    Ahh Bob, you spoiled it :)

    Graham.
  33. Far from it. The legs are more than just...

    Far from it. The legs are more than just decoration. In fact, the front legs take exactly the same load as they would if there was no wall support. And if the brackets are screwed to the wall with...
  34. Do you have a reference for a steel/tungsten...

    Do you have a reference for a steel/tungsten alloy of higher stiffness? I've never heard of such an alloy. For all practical steels, you're stuck with the ~200 GPa, and even lower for stainless steel...
  35. Yes, I agree. It's a classic case of form winning...

    Yes, I agree. It's a classic case of form winning over function.

    The engineer in me is offended by designs like this. One diagonal member would make all the difference. But engineering is not...
  36. For long slender legs like that, failure would be...

    For long slender legs like that, failure would be by buckling, so there is no point in going to anything stronger than mild steel. The load where buckling failure occurs depends on the stiffness of...
  37. Replies
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    Or just drill and tap M3. If the tap breaks it's...

    Or just drill and tap M3. If the tap breaks it's 4140, if it doesn't then it's not.

    Graham (just trying to be helpful).
  38. Thread: Mayo

    by Oldbikerider
    Replies
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    4,471

    I've taken to lazy way out and just ordered a...

    I've taken to lazy way out and just ordered a tapered spindle with a blank 10 mm bore from the link that China kindly posted. Well, it's kind of the lazy way out as I don't have a 1/2 UNF tap, so...
  39. Thread: Mayo

    by Oldbikerider
    Replies
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    4,471

    Thanks Frank, I'd seen similar ones to those,...

    Thanks Frank,

    I'd seen similar ones to those, but only in 1/2 BSW, for example from Abrasiflex, so had discounted that option. Those Supercheap Auto ones are M14, so they won't work either.

    I...
  40. Replies
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    For reference, Edcon Steel on their on-line shop...

    For reference, Edcon Steel on their on-line shop price 4140 200 dia x 75 long at $110 including cutting.

    Edcon are the only place I know of in Sydney for small quantities of steel. There used to...
  41. Thread: Mayo

    by Oldbikerider
    Replies
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    4,471

    OK, thanks guys. Neither Blackwoods nor Norton...

    OK, thanks guys.

    Neither Blackwoods nor Norton list 150mm wheels with 1/2 inch bores (they have 1 inch or 31.7mm), but I didn't realise the wheels come with bushings (and neither of those...
  42. Thread: Mayo

    by Oldbikerider
    Replies
    10
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    4,471

    Mayo

    I picked up this Mayo belt driven grinder/buffer last weekend. Does anyone know anything about the brand? The closest I've come to any information is a Cecil E Mayo Pty Ltd. but they are long gone...
  43. Thread: Turnado

    by Oldbikerider
    Replies
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    6,032

    That's interesting Chris, It was my...

    That's interesting Chris,
    It was my understanding that due to the folding process damascus steel has layers of steel interspersed with layers of carbon or at least layers of higher carbon steel,...
  44. Thread: Turnado

    by Oldbikerider
    Replies
    30
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    6,032

    Chris, Those pen tips look great. What tool...

    Chris,

    Those pen tips look great. What tool material did you use, or does it come with the Turnado? I'm surprised that it cuts the presumably very hard Damasteel as drama free as you describe.
    ...
  45. Replies
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    Shoe Goo? It sticks well to rubber, and leaves...

    Shoe Goo?

    It sticks well to rubber, and leaves a nice tacky surface that would seem to be good for your application.

    Graham.
  46. I'm not an electrician, but does the acronym MCBO...

    I'm not an electrician, but does the acronym MCBO mean it's an overload breaker as well as an RCD? If so then is the welder tripping it out simply on over current? The time related symptoms you...
  47. Replies
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    I don't think moisture will be a problem, but as...

    I don't think moisture will be a problem, but as Bob has said you should be able to effectively seal the corner joins between HDPE sheets.

    The reason I say moisture won't be a problem is that...
  48. Replies
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    In the past I've purchased a lot of 3mm HDPE...

    In the past I've purchased a lot of 3mm HDPE sheet for bench tops and other applications. I haven't seen prices in the past 3 years, but last time I purchased it was reasonably cheap in that...
  49. Replies
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    That's a nice little lathe, and lot's of...

    That's a nice little lathe, and lot's of accessories.

    I notice in the ebay ad that it talks about converting to a 24V DC motor. If you will be doing this I have a motor and controller surplus to...
  50. Replies
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    Oh, what a disappointment Bob. The good thing is...

    Oh, what a disappointment Bob. The good thing is that you're not reporting any damage to the indexing head, tail stock (apart from the centre) or the mill itself.

    It's easy to comment in...
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