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  1. The gear cutter in me hates this so much, but it...

    The gear cutter in me hates this so much, but it falls squarely in the "good enough for the hobbyist" camp so I guess I can't be too mad about it.
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    A high speed spindle would likely be running a...

    A high speed spindle would likely be running a light oil, probably something like ISO 15 or lighter; some even go as light as ISO 5. Grease can lead to overheating if it's too thick.
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    The charts are supplier specific; unless you know...

    The charts are supplier specific; unless you know where the material came from, the paint is meaningless.
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    I can do a quick dxf in autocad if you need

    I can do a quick dxf in autocad if you need
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    Looking around at places that do laser cutting,...

    Looking around at places that do laser cutting, the going tolerance seems to be +/- 4 or 5 thou. The theoretical limit of fibre laser is supposedly 1 thou, but that would likely take multiple test...
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    https://www.insanehydraulics.com/library/tubemaxpr...

    https://www.insanehydraulics.com/library/tubemaxpressurecalculator.html

    Found this calculator which says it should comfortably handle 800psi, I guess we'll find out
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    Just following up, doesn't look like we have any...

    Just following up, doesn't look like we have any available; we scrapped a bunch that were properly buggered, the rest were integrated into our fleet. If anything changes I'll let you know.
  8. Never done a MW, but Mitutoyo, Starrett, and Tesa...

    Never done a MW, but Mitutoyo, Starrett, and Tesa all just have a screw in the end that holds the ratchet together. Have you tried holding the large blue bit and unscrewing the small blue bit?
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    Re: SR44 vs LR44 (silver vs lithium); it's not...

    Re: SR44 vs LR44 (silver vs lithium); it's not just the voltage that's different, the silver chemistry has a much more stable output than lithuim and will maintain voltage for nearly all of its life,...
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    I would take digital over vernier any day. It's...

    I would take digital over vernier any day. It's just so much more convenient.

    Insize make nice tools that don't cost a fortune
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    Googled 602 bronze and found: ...

    Googled 602 bronze and found:

    https://dl.asminternational.org/alloy-digest/article-abstract/10/9/Cu-106/911/MUELLER-602-BRONZEBearing-Bronze-Alloy?redirectedFrom=fulltext...
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    Soo......buy a battery hammer drill. Seriously,...

    Soo......buy a battery hammer drill. Seriously, anything you attempt to make will be worse than what you can buy for a couple of hundred dollars.

    I'm all for DIY projects, but sometimes they're...
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    Any specific style of holder? We have a tub of...

    Any specific style of holder? We have a tub of spare 50 taper holders (no idea which flavour of 50 taper) at work after we retired an old mill, there's still another machine that uses them but not...
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    The real question is why you want to make one...

    The real question is why you want to make one when you can buy a cheap hammer drill or air chisel or needle scaler for probably less than the cost of the materials you'd need to make it
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    Congratulations, you've invented the impact...

    Congratulations, you've invented the impact driver :2tsup:

    https://www.reddit.com/r/educationalgifs/comments/2pzbbv/how_an_impact_wrench_works/
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    I think Steve might be right. The British...

    I think Steve might be right. The British Standard Cycle thread (because OF COURSE they have to have a new standard for everything) looks like it lines up; the 8G is listed as 40 tpi, but the OD is...
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    This guy seems to have a few on his store; not...

    This guy seems to have a few on his store; not cheap but they're hard to find (as I'm sure you well know), so you have to pay the rarity tax https://www.ebay.com.au/itm/235343651076
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    Google search says $1.10-1.50/kg for clean lead...

    Google search says $1.10-1.50/kg for clean lead and 30-40c/kg for batteries.
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    You can get no-name 12mm and 1/2" insert tooling...

    You can get no-name 12mm and 1/2" insert tooling pretty cheap from the usual online suspects (Amazon/AliExpress/etc)
  20. They look very similar to the DGN style we use at...

    They look very similar to the DGN style we use at work (Iscar Do Grip), I'd give them a go
  21. I'm sure you could just change the design to take...

    I'm sure you could just change the design to take a DCMT insert for less tool engagement if you're worried about cutting force.
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    The amateur-tractor method...for when you don't...

    The amateur-tractor method...for when you don't have a pro-tractor :p
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    Not that. Should have said compact laminate; it's...

    Not that. Should have said compact laminate; it's the same stuff but a solid sheet, not just a veneer on top.

    Very hard, very dense, very expensive...see if you can find a cut-to-size service...
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    A sheet of high pressure laminate works great as...

    A sheet of high pressure laminate works great as a CNC router bed
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    Making something yourself that you can easily buy...

    Making something yourself that you can easily buy is basically never a better choice. I would buy the off the shelf product first and see if it does what you want and only bother making something if...
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    1mm rod? 2 pairs of pliers and bend it by hand lol

    1mm rod? 2 pairs of pliers and bend it by hand lol
  27. It looks dodgier than it is. Once you tighten the...

    It looks dodgier than it is. Once you tighten the chuck it's completely solid; no different to using soft metal pads with hard jaws to protect the job.
  28. One of the guys at work had an interesting way of...

    One of the guys at work had an interesting way of getting around protruding features...

    404190
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    Correct. Leadscrew pitch is usually a nice round...

    Correct. Leadscrew pitch is usually a nice round number, either in mm or fractional inches (module and DP pitch leadscrews do exist, but highly unlikely in this case), so you should be able to stick...
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    The seller is correct. As mentioned by others...

    The seller is correct. As mentioned by others here, a reversing idler can be any number of teeth and will change nothing but the direction.

    EDIT: As pointed out by Michael....that is definitely a...
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    Fun little factoid I heard recently from one of...

    Fun little factoid I heard recently from one of our machine reps...Fanuc guarantee spare parts availability for everything they've ever made :oo:; if it's obsolete, they'll make whatever adaptors are...
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    If you want to go real bush mechanic you can just...

    If you want to go real bush mechanic you can just cut some forms/dies out of hardwood to press the shapes in a bench vice; I have successfully done this for 30x3mm brass, I'm sure 6mm steel rod...
  33. Thread: Emo 2023

    by elanjacobs
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    I've been too busy getting buttered up by sales...

    I've been too busy getting buttered up by sales reps to do much "tourist" stuff yet :p didn't even stop to have lunch on Tuesday (the nice people at Gleason fed me on Monday)

    Did wander into DMG...
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    https://www.machines4u.com.au/search/jointer/?tor=...

    https://www.machines4u.com.au/search/jointer/?tor=3&d_f_m=100&conditionfacet=Used&order=pricenotax

    Seems a shame to pull apart machines of such high quality just to use as a lap, but the cheapest...
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    https://en.wikipedia.org/wiki/Cutting_fluid#:~:tex...

    https://en.wikipedia.org/wiki/Cutting_fluid#:~:text=Water%20is%20a%20good%20conductor,create%20an%20optimal%20cutting%20fluid.

    Internet says no :no:

    Purely as a cooling agent it's great, which...
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    Cutting fluid serves 3 purposes: cooling,...

    Cutting fluid serves 3 purposes: cooling, lubricating, and flushing.


    Because they're almost always working with steel where you can get away with minimal/no cutting fluid because it's not a...
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    I've done a fair amount of work with Tufnol...

    I've done a fair amount of work with Tufnol (cotton reinforced bakelite) and would not recommend it in sliding applications on steel as it's quite abrasive on cutting tools; I'm assuming shock forks...
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    There's angles all over the place making gears,...

    There's angles all over the place making gears, but the machines all have vernier scales on the head (either 5 or 1 minute divisions, except for one German machine that has a 6 minute scale because...
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    Wera bits are really nice

    Wera bits are really nice
  40. Thread: Reamer ID?

    by elanjacobs
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    Thanks to the nice people of Reddit, we have an...

    Thanks to the nice people of Reddit, we have an answer. It's a duplex reamer https://gammons.com/duplex-chucking-reamers-morse-taper-shank
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    Or one (1) shifter :p

    Or one (1) shifter :p
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    Some bicycle threads are half/half as well with...

    Some bicycle threads are half/half as well with metric OD and imperial pitch https://www.parktool.com/en-int/blog/repair-help/basic-thread-concepts#article-section-6
    Just...why???
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    Cute idea, but I'd rather spend the few hundred...

    Cute idea, but I'd rather spend the few hundred dollars for a proper steel one https://assetplant.com.au/product/sm-20-series-lathe-lead-screw-cover-1000-mm-long-with-brackets/

    What really...
  44. I see we're doing 3rd world machine shop videos...

    I'd probably hire some of these guys; if they can do that with what they have, imagine what they could do in a modern shop

    https://www.youtube.com/watch?v=Wm6olzTXslI
  45. Lol seen that one before and I'm genuinely...

    Lol seen that one before and I'm genuinely impressed with what they can do with so little. It's obviously going to be more of a "gear shaped object" than an accurate gear, but in a low speed...
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    And those distributors then sell to you :wink: ...

    And those distributors then sell to you :wink:

    https://boltinsunshinecoast.com.au/pages/brighton-best-international

    google brighton best fasteners site:au to find australian sites than mention...
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    Brighton Best

    Brighton Best
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    The bearing blocks all have integrated wipers to...

    The bearing blocks all have integrated wipers to deal with that, as long as you protect them from hot chips directly falling on them (probably wouldn't hold up too well with those) I think it would...
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    The CNC router at my old work had a DIY vacuum...

    The CNC router at my old work had a DIY vacuum table made out of a 19mm sheet of high pressure laminate (basically just reinforced phenolic resin) with a grid cut in it for the air to flow through...
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    Swapping the round rails in the examples in the...

    Swapping the round rails in the examples in the links for prismatic linear rails would probably be a worthwhile extra cost for doing heavier work and make shimming for accuracy easier (look at any...
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