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Type: Posts; User: Michael G

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  1. Replies
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    Those holes are around 600mm from the floor, so I...

    Those holes are around 600mm from the floor, so I would either need a very long bottle jack or a large stack of timber/ bricks. That bit of the lathe is around 1000kg, so i don't really want to take...
  2. I have a universal mill. My main complaint with...

    I have a universal mill. My main complaint with it is lack of quill. Not a big deal but annoying in it's absence - bit like having a car that has intermittent wipers but not variable intermittent...
  3. I doubt you will find a router bit with a R30...

    I doubt you will find a router bit with a R30 radius on it though John.

    A ball turner will do the job, but for a small quantity, you might be better turning to a rough profile and then smoothing...
  4. I'd be tempted to put an orbital sander on there....

    I'd be tempted to put an orbital sander on there. With gentle pressure and moving it uniformly across the table, I doubt that any variation in the finished surface would be noticeable. Plan B would...
  5. A few thoughts to put into the mix The main...

    A few thoughts to put into the mix

    The main flaw with the Bridgeport machines is the attachment of the head to the column boom. That is where the rigidity goes missing because of the tilt and nod...
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    Yes. They are the official lifting points. The...

    Yes. They are the official lifting points. The lathe was positioned using them when it first arrived. To hire a gantry to lift it is over $250 (plus delivery), so I am exploring options to do lift it...
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    I've got maybe 8mm of clearance between the...

    I've got maybe 8mm of clearance between the bottom of the stand and the floor at the moment. I could lever it up bit by bit with a pry bar and blocks - that was the original plan. However, that is...
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    If someone showed me that weld and asked what is...

    If someone showed me that weld and asked what is wrong, the first thing I would say is that all that spatter suggests the current is too high. I have heard stories about people doing battery welding...
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    As John says, you would need a draw bar for the...

    As John says, you would need a draw bar for the MT4 taper option. However, I think you are dismissing the integral plate option too quickly. If you buy something then yes, the accuracy is as good as...
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    If you look carefully at the first photo in post...

    If you look carefully at the first photo in post 40, you will see that the very tips of the cutting edge have been knocked off. Your speed was fine although perhaps some lube would have been good. I...
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    Need the use of a toe jack

    In the next few weeks I want to lift my lathe up around 100mm and a toe jack would probably simplify matters a little. The lathe is 1.5t, so I'm going to need something.
    Before I make or hire...
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    When repairing old machines, do your best not to...

    When repairing old machines, do your best not to mix fastener types - it really creates headaches later on, either because it degrades the machine (I once had a 1/2" UNC thread fitted where it should...
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    If you have a scratch start TIG, get yourself a...

    If you have a scratch start TIG, get yourself a small copper block to do your starts on.

    Michael
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    I recently cut a couple of nuts for metric pitch...

    I recently cut a couple of nuts for metric pitch leadscrews and I thought they were trapezoidal at the time. With hindsight, I have my doubts...

    Michael
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    Your choice, but but I've just noticed your...

    Your choice, but but I've just noticed your location as AU. If you change it to a suburb or area you may find there are members near by who can help with repairs like this.

    Michael
  16. Replies
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    By all means buy one if that is the way that you...

    By all means buy one if that is the way that you want to go, but if you can't get one, happy to make one for you if you have the bits to copy.

    Michael
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    A trapizoidal thread is 30 degrees, an ACME 29...

    A trapizoidal thread is 30 degrees, an ACME 29 degrees. The difference between the two is probably almost indistinguishable from wear that may have taken place over the years. I can't think of any...
  18. Thread: Motor fan

    by Michael G
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    Motor fan

    I bought a B56 3 phase 0.4kW 6 pole motor today, and will be wiring it into a VFD.
    The star/ delta connection was not at all what I was expecting -
    381348
    Although for a motor of this power,...
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    20A 3 phase plug

    I bought a motor today that had a cable and (3 phase) plug on it. As I'm going to be using this with a VFD, both of these are redundant to needs. The plug is a 20A 4 pin Clipsal item (older style),...
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    You adjust the height for the tool holder as per...

    You adjust the height for the tool holder as per normal and then when in use, you turn the knob and both wheels come in. Never thought about it much more than that.:B

    Michael
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    Another helper is to put a dowel pin in one hole...

    Another helper is to put a dowel pin in one hole after drilling and position that against a square stop (like a parallel). A square collet block is probably the easiest though.

    Michael
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    From the link that Steve provided it looks like...

    From the link that Steve provided it looks like it is the sort of thing used on a capstan lathe, where the knurl is set specifically for the size material being knurled - not much good for a general...
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    Thanks for the input guys. I got some more of the...

    Thanks for the input guys. I got some more of the story today, in that this guy is being hired by a part of the company that traditionally has done it's own thing. As far as I can work out, the...
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    And down the rabbit hole we go! You...

    And down the rabbit hole we go!

    You potentially have a large task ahead of you. With regard to your questions,

    If you send me a PM with your address, I have some felt here that you could cut a...
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    Solidworks vs. Fusion 360

    I'm asking this one on behalf of work -
    We have a guy starting soon who will be in a technical support role and he has asked for F360 on his computer. The rest of the organisation use SW. I've...
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    Shouldn't do (unless you embed bits of steel in...

    Shouldn't do (unless you embed bits of steel in the Al when you hit it - unlikely unless the hammer shatters :doh:)

    Michael
  27. Replies
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    Rather than try to fill the whole lot, my...

    Rather than try to fill the whole lot, my preferred method would be to neaten up the hole and make up a patch to match. The whole thing will need to machined anyway before it's able to be used, so...
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    Brass is no good - the zinc will come out and...

    Brass is no good - the zinc will come out and play havoc with the weld. It needs to be copper.

    Michael
  29. Replies
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    Some of these make you cry - ...

    Some of these make you cry -
    https://www.machines4u.com.au/view/advert/ENGINEERING-LAYOUT-LAPPING-TABLE/462474/#

    "was precision machines for a dead flat surface."

    Michael
  30. Replies
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    Try these too - ...

    Try these too -
    https://www.youtube.com/watch?v=GWyHJVOxKK4

    https://www.youtube.com/watch?v=4-3gPWl6wfU

    Michael
  31. Replies
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    You know, most people use that drain outlet on...

    You know, most people use that drain outlet on the sink S bend for a dishwasher. I guess that means the coffee machine is the more important appliance.

    Michael
  32. Amazon? ...

    Amazon?
    ...
  33. Replies
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    Commercial bolts these days are rolled rather...

    Commercial bolts these days are rolled rather than cut which gives a tougher thread.

    I would suggest that you get commercial bolts even if that means adapting the trailer to suit. In terms of...
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    I'd prefer to cut the thing old school. I think...

    I'd prefer to cut the thing old school. I think for a power transmission gear, a printed one would not last long.

    Michael
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    Mostly plain sailing but one or two parts that...

    Mostly plain sailing but one or two parts that would require some less common techniques. I can't see why the warnings against hobbyists would be needed though. You can either do it or not...
    ...
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    Google is suggesting to me that the equivalent...

    Google is suggesting to me that the equivalent these days is a TPUN insert. You would need to check that.

    Michael
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    I vaguely recall someone going to a clearance...

    I vaguely recall someone going to a clearance sale a while back and buying (or nearly buying) one of these. Was it Morrisman?

    Michael
  38. Perhaps just clarify for us Simon - how much TIG...

    Perhaps just clarify for us Simon - how much TIG are you planning to do with it. I have a secondhand weldskil unit (130A) which was around $150. It is TIG capable but that's scratch start TIG with an...
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    I think they said that the engine was turbo'd ...

    I think they said that the engine was turbo'd

    The speed could be due to Binky being a hobby project but the truck is a work vehicle. Be interesting to see how much more stuff has to be connected...
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    Part 3 is out - ...

    Part 3 is out -
    https://www.youtube.com/watch?v=MSP6l8JIIB8
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    Good find. Whittle a new bracket out of some Al...

    Good find. Whittle a new bracket out of some Al and you're away.

    Michael
  42. Protection of electronics in the shed from dust

    Today we had the NBN installed. Translated, I had to pay several hundred dollars to retain a level of service that I already have...
    Anyway, the technician who installed the NBN modem thing in the...
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    A thrust bearing Michael

    A thrust bearing

    Michael
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    Be careful what you don't wish for

    Pete F would probably find this amusing as he and I used to disagree over some aspects of 3D printing, but work recently took over another company and so gained a 3D filament printer. It's a biggish...
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    Do you have a boring head? If you do I would cut...

    Do you have a boring head? If you do I would cut the bulk of the hole out with a holesaw (say diameter 19.05 14mm) and then clean up with the boring head.

    Michael
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    I made one once. The method would be to get a...

    I made one once. The method would be to get a piece of something like 20x5 flat bar, partially cut it at 10mm intervals 3 times plus once all the way through. bend along the cuts and wrap around a...
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    I don't think the alloy disc is the real problem....

    I don't think the alloy disc is the real problem. It's the surface speed of the sand paper. Too fast and you will literally burn the timber that you are sanding. Don't know what the effect of too...
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    If you had bent the screw, you would notice a...

    If you had bent the screw, you would notice a cyclic tight spot when turning the handle.
    Have you checked your gibs are properly adjusted?

    Michael
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    If you are only going to do plastic and Al, have...

    If you are only going to do plastic and Al, have a look on ebay for CNC routers. They will probably do the job. If you are a you tube fan, then look up the videos by "this old tony". He has a CNC...
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    In this case you would have been camped here for...

    In this case you would have been camped here for several days...

    Michael
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