Search:

https://gollantauctions.hibid.com/catalog/534118/major-sheetmetal-and-engineering-machine-auction?s=BID_AMOUNT_HIGH_TO_LOW

Lots of stuff, bids haven't gone insane yet

Mmmmm ground worms; very pretty, very pricey

What's the chain length of the old hoist?

Still wrong :wink:

In fact it's arguably worse because at least free hobbing is a generated profile that will exactly match the corresponding thread as it rolls. The tooth profile of a worm wheel...

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.

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.

The charts are supplier specific; unless you know where the material came from, the paint is meaningless.

I can do a quick dxf in autocad if you need

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...

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

Found this calculator which says it should comfortably handle 800psi, I guess we'll find out

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.

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?

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,...

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

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...

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...

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...

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

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

https://www.reddit.com/r/educationalgifs/comments/2pzbbv/how_an_impact_wrench_works/

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...

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

Google search says $1.10-1.50/kg for clean lead and 30-40c/kg for batteries.

You can get no-name 12mm and 1/2" insert tooling pretty cheap from the usual online suspects (Amazon/AliExpress/etc)

They look very similar to the DGN style we use at work (Iscar Do Grip), I'd give them a go

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.

The amateur-tractor method...for when you don't have a pro-tractor :p

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...

A sheet of high pressure laminate works great as a CNC router bed

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...

1mm rod? 2 pairs of pliers and bend it by hand lol

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.

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

404190

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...

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...

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...

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...

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...

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...

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...

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...

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...

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...

Wera bits are really nice

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

Or one (1) shifter :p

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???

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...

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

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...

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...