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  1. Replies
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    Well, did another batch of them and I am sold on...

    Well, did another batch of them and I am sold on form taps; 45 parts, no hand tapping and, most importantly, no broken taps or scrapped parts :D (did lose a couple in testing, but we'll take that as...
  2. Here's the counter-rant. What you do doesn't...

    Here's the counter-rant.

    What you do doesn't just affect you, it affects everyone around you and plenty of people who aren't around you too.

    If you lose an eye because you've decided that you...
  3. Ok, I read that about 5 times and I still can't...

    Ok, I read that about 5 times and I still can't figure it out. I know you're whinging about something, but can't quite make out what...
  4. I remember DIY chrome plating came up a little...

    I remember DIY chrome plating came up a little while ago; aside from being expensive, it's an extremely toxic process https://en.wikipedia.org/wiki/Hexavalent_chromium#Toxicity

    Either replace the...
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    Hobbing baby bevel gears

    Thought I'd share this as I'm guessing most people here wouldn't have been exposed to this sort of specialised work.

    One of my recent jobs at work was cutting some small brass bevel gears (I think...
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    What's the bore size? I might be able to hob one...

    What's the bore size? I might be able to hob one for you at work if we have an arbor that will fit (and if we can work out exactly what module/DP it is).
  7. I've been trying to wrap my head around this...

    I've been trying to wrap my head around this concept and I keep stumbling on what seems to me to be an obvious problem; the rate of outwards motion of the pushed balls is not going to be consistent...
  8. That's just one way they do it, their Imicro goes...

    That's just one way they do it, their Imicro goes one step further and actually has a threaded cone

    https://uz.all.biz/img/uz/catalog/81968.jpeg
  9. What's going on inside a 3-point bore mic

    Found some old posters lying around at trade school and was told I could have them. There's a few on metrology (all the various limits and methods of measurement for specific features/tolerances) and...
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    Ideally from the base; if you're using a forklift...

    Ideally from the base; if you're using a forklift I'd try 2 slings under where the base/pedestal flares out to support the table, crossing them over so they're on the opposite fork tines so they...
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    Oops! I'm not so worked up over the broken...

    Oops!

    I'm not so worked up over the broken taps and scrapped parts, just want to know if there's a better way of doing it so I can learn and do a better job.
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    Nope, they're drilled manually on a Bridgeport...

    Nope, they're drilled manually on a Bridgeport clone. The parts are cut by wire EDM, there is one milling operation after that which is done on a CNC Bridgeport clone, but the orientation of the...
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    Looks like some sort of drilling setup to me, the...

    Looks like some sort of drilling setup to me, the last pic is showing a limit switch and multi position turret stop. Also seems to be some sort of swarf/fume extraction hood on it as well. As...
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    Well it just so happens that the Guhring rep was...

    Well it just so happens that the Guhring rep was in today and he reckons they've got a form tap that will work, so we're getting some in to try
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    Holes are drilled to 5mm deep, tapped to 4-4.5mm...

    Holes are drilled to 5mm deep, tapped to 4-4.5mm deep
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    We've got proper spiral taps from Walter, they...

    We've got proper spiral taps from Walter, they bring the chips out really nicely and only have about a 0.5mm tapered end so we can get nearly full depth. Using the smallest T-handle we've got and...
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    Tapping tiny threads sucks

    My job at work today was to drill and tap a bunch of M2x4.5mm blind holes in 4140. This is an ongoing job, so we have various jigs to hold the parts how we need them. We power tap the first 2mm in an...
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    Pipe thread sizes

    What's the deal with pipe threads?? (Seinfeld voice optional lol)

    I needed an adaptor to get from a standard Nitto fitting to push fit hose, so I measured the OD of the thread, which was roughly...
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    +1 for ball bearing nuts. If you want to stick...

    +1 for ball bearing nuts.

    If you want to stick with plain nuts, a drop of air tool or light machine oil on the tapered surface that presses against the collet (as well as a drop or 2 on the...
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    Air quality is one of the main reasons I had to...

    Air quality is one of the main reasons I had to leave the timber industry, that's why I wanted to find out how controllable the mist systems are. I had a couple of days on the cylindrical grinder...
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    As Chris said, they have a 1mm range (unlike 5C...

    As Chris said, they have a 1mm range (unlike 5C where you really do have to have both sets), so a 1/2" shank will go in a 13-12mm, 3/8" goes in 10-9mm and 1/4" goes in 7-6mm, you just have to tighten...
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    Yes, no and kinda. In that order. I've...

    Yes, no and kinda. In that order.

    I've mentioned it to a couple of the foremen and they're happy for me to try it. If it works well I might take it further, for now it's just about making my life...
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    Not specifically, but we are encouraged to be...

    Not specifically, but we are encouraged to be looking for better ways of doing things.
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    Mist coolant and breathing

    I've been thinking about getting myself a misting device to use at work because the existing flood coolant on the lathes and mills is both messy and hard to direct, but I'm a bit concerned about how...
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    Ebay collets are very hit-and-miss; sometimes you...

    Ebay collets are very hit-and-miss; sometimes you get lucky and they run true, sometimes they go straight in the bin..

    ER has a good clamping range and are easy to source. You don't have to go...
  26. Dibs on No 25 Machine tool operation 1&2. I'm...

    Dibs on No 25 Machine tool operation 1&2.

    I'm guessing they're rather bulky, more than happy to pay for postage to 3162 VIC plus your time/effort to pack them and get to a post office.

    EDIT: If...
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    Charge what the market will bear, it's worth what...

    Charge what the market will bear, it's worth what someone will pay, other similarly capitalist phrases...
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    Meanwhile, there's a fairly well equipped baby...

    Meanwhile, there's a fairly well equipped baby Schaublin 102 on ebay for under 4k...
    https://www.ebay.com.au/itm/Lathe-Schaublin-102-80/183823719669?hash=item2accbf5cf5:g:9kcAAOSwnwpc0J4f

    Or one...
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    Complete guess, but... Most people are right...

    Complete guess, but... Most people are right handed, so having the headstock on the left means that the right hand is closer to the controls when looking at the work.
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    [/COLOR]I dunno...we've got English, Italian,...

    [/COLOR]I dunno...we've got English, Italian, Japanese, Czech and Taiwanese lathes and they're all on the right. Seems to be a bit whatever they felt like at the time :shrug:
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    The 6 brands we have at work all have the...

    The 6 brands we have at work all have the handwheel on the right, the only other one I've seen on the left is the Leblond Makino at school. Very annoying position and not even guarded.
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    Pic? Or model number so I can look it up? ...

    Pic? Or model number so I can look it up?

    Yeah, controls in the way of chips is just poor design. If they have to be there, at least include a chip guard
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    Lathe feed controls

    So far in my fairly short metalworking career I've seen quite a number of different lathes (probably about 10 between work and school) and they all seem to have similar controls for the feed; a...
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    I wouldn't. Ally is fine for timing belt pulleys,...

    I wouldn't. Ally is fine for timing belt pulleys, but if it's meshing with a steel gear/rack and/or under load I reckon the teeth will either be worn out of shape or sheared off completely in a short...
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    The latest ebay scores... TESA Imperial...

    The latest ebay scores...

    TESA Imperial Mikechex set, Inspection grade which seems to be "A" in the old system or somewhere between 0 and AS-1 in the new system. There's no scratching on them to...
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    I would have been very happy stopping before 6 if...

    I would have been very happy stopping before 6 if that was allowed.
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    Must be a trend with older apprentices, I also...

    Must be a trend with older apprentices, I also managed to skip ahead of younger apprentices who started before me and got on to 'real' work right away instead of deburring and tapping. Gotta be some...
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    I think it was more a "don't discuss what he's...

    I think it was more a "don't discuss what he's gone full retard about"
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    Hand tools are still covered in 1st year F&M, but...

    Hand tools are still covered in 1st year F&M, but chisels just get a cursory look at, most of it (at least in VIC) is files and hacksaw
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    Yep. I was fortunate to learn my furniture trade...

    Yep. I was fortunate to learn my furniture trade from a 4th generation tradesman, so I got to learn some of those dying skills, and there are some older blokes at my new place as well so hopefully...
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    Yeah...we don't. For better or worse, hand...

    Yeah...we don't.

    For better or worse, hand tool use is declining in most (all?) trades because you don't make money with hand tools when there's a power tool or machine that will punch out a...
  42. Thread: Ebay Mill

    by elanjacobs
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    Lol sometimes we get so helpful you end up...

    Lol sometimes we get so helpful you end up questioning your whole plan by the end :p, but it's a two-way street; the more info you can give, the better/more relevant the advice will be
  43. Thread: Ebay Mill

    by elanjacobs
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    Lol tell us what you really think :p

    Lol tell us what you really think :p
  44. Thread: Ebay Mill

    by elanjacobs
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    Looks like it came out of the same place that...

    Looks like it came out of the same place that makes the Hafco one https://www.machineryhouse.com.au/M123
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    Hopefully there are no significant long-term...

    Hopefully there are no significant long-term issues. Good luck
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    Congrats! Hope it goes well

    Congrats! Hope it goes well
  47. Thread: Facemill

    by elanjacobs
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    Lol, I guess I'm still used to woodwork...

    Lol, I guess I'm still used to woodwork recommended feeds/speeds; 18-24k rpm, 6-12 m/min...not the kind of numbers I'd be doing manually
  48. Thread: Facemill

    by elanjacobs
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    Most of those would be for a CNC setup where...

    Most of those would be for a CNC setup where everything is super rigid and has a boatload of power. Even if a manual mill can hit the recommended speeds, I certainly wouldn't want to be near it.
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    0-6" TESA mic set in the UK

    Appears to be an Isomaster set, reading in 0.0001". Potentially an absolute steal, even if you had it shipped out to Oz with a forwarding service, given that each one is north 100 new
    ...
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    Small amount of slop at the bottom of the quill...

    Small amount of slop at the bottom of the quill housing? The further out the quill is, the more it would be able to move around.
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