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My guess would be 57mm, the markings suggest it's a 6 pounder 7cwt anti-tank projectile (Ordnance QF 6-pounder - Wikipedia, the free encyclopedia)

re: Bentonite, you can buy it from stock feed suppliers in 20kg bags for <$10 last time I bought it.
It comes as a very fine powder, apparently it's added to cattle feed in small amounts.

As for...

I've got a bunch of German made industrial struts, they're rated at 800N (so a pair will lift ~160Kg) and are roughly 570mm extended/240mm closed (from memory). Perfect for camper trailer lids etc....

I've had my TransTig 180 for a few years now, but recently moved house and had to re-wire it for single phase.
The other day after swapping the terminals over to 240v I fired it up from a GPO and I...

Here's a couple of pics of my hercus' milling attachment - my grandfather made it 50 odd years ago and I inherited it with the lathe. It just sat on a shelf for the first year after I got it because...

My shed takes up an 1/8th of an acre all by itself :oo:
All these pics of organized sheds (sheds shouldn't have to be clean or tidy, just organized) have guilted me into trying to sort mine out a...

To be a factory, I'd have to make something in it ;)
With 4 young kids I get to spend very little time in there, so nothing ever gets put away properly - I'm usually rushing to fix whatever I'm...

Mine's a disaster lately :(
In the far left hand corner lives my TIG and plasma cutter, 12T press, 2 x Hercus 9As, 49x12 knee mill, stock, and a bunch of (cluttered) benches.
Just outside the door...

I have cut Aluminium with a friction saw before, and that disc did explode some time later.
Coincidence or not - I don't know, but when one of these discs lets go mid cut it's pretty scary.

If I...

Google "Osborn Titanic R8" - you should be able to find a used set pretty cheap.
http://www.astronomiainumbria.org/advanced_internet_files/meccanica/easyweb.easynet.co.uk/_chrish/mchuck1.jpg

I googled a few of the suggestions, but most of what I saw had yellowish bands in them - this doesn't (or not that I have seen).
I browsed through pics of various hardwoods, and the closest I could...

Hi all,
I was wondering if this photo is enough to go on for anyone to identify this timber? I've narrowed it down to being "wood" - and that's the extent of my knowledge in this area :-

i think...

I'd never given it much thought, but assumed that the drawbar always provided the vertical securing (i.e. stop the tool from falling out of the spindle) and the taper itself transferred the lateral...

Sorry about the picture quality, my phone was the only camera I had handy.

I do have a slitting saw arbor, but it looks to have a 1/2" whitworth thread.
Is it any use to you?

I might have a spare one - I've got a decent collection of #30 tooling, but a #40 spindle in my mill :(
I'll try to remember to have a look through them tonight for you. I think they're most/all M12...

I'd use a plasma cutter, but if you had one of those on hand then you probably wouldn't be asking this question ;)

I'd try drilling a decent sized hole in the middle then using aviation snips to...

The difference a mm makes is amazing, isn't it?

pjt's post about lining with sheet metal reminded me of something else - if you want to bend RHS with your pipe dies, first get a piece of ~5mm...

Have you considered TIG instead? From your list of intended uses, it might suit you better.
One of the advantages of TIG for panel repair is that the welds are malleable, they won't crack like MIG...

I looked at my 30 and 40 tooling this morning, and on average the drawbar flange ratio isn't as different as I pictured in my head, so I'm not so sure now :-
Are you after 30 or 40?

I'd say 40 - the drawbar flange on nt30 is usually about 50% the length of the taper from memory (don't quote me though), and those ones look proportionally less than that.

It's a Selson, so maybe an english lathe, produced under license in the us?

I contacted Customs to clarify a few things when I was looking at building a cnc laser a few months ago. The ban only covers self contained laser pointers - not laser tubes, laser diodes, or shark...

As Stringy said, the OD is a bit less than it used to be... and cheapo Chinese cast dies aren't the most accurate either.

Heat your die until it's glowing nicely, then stick a piece of pipe in the...

When you said an off-road buggy, were you referring to something like a gokart, or a proper offroad truggy sort of vehicle?
If the latter, what sort of size do you have in mind? And 2 or 4wd?

I was watching that rotary table on ebay with the idea of doing a similar conversion - non-standard gearing wouldn't make any difference after the driver was tuned and calibrated.
Once the price...

That's the powdered sugar soap.

The liquid version is much better, according to the MSDS it contains water, sodium carbonate and sodium tripolyphosphate - both of which are well suited to the...

I saw this thread earlier today, and it caught my eye as I'd never come across this process before.
I dabbled with electroplating and anodizing years ago - which use a very similar process, but...

It's alive!!

Dealextreme have a 3w flexible LED light for $12 delivered, or a slightly more robust one for $19
Allow up to a month for delivery though.

I'm not 100% sure yet, I haven't been game to pull one of the two remaining bolts out, in case the head suddenly crashed downwards.
From memory it's a 19mm head, roughly 12mm shaft, I guess about an...

He also starts his auctions low and cancels any bids on them if they're not up to a decent price before the final hours. After he did that to me a few times, I stopped bidding on his stuff. Fair...

There was one of those on ebay a day or two ago, it was only 40 minutes south of me and sold for $130 or so, and appeared to be in pretty decent condition from the photos.
I was really tempted, but...

What really surprised me was that there was only one bolt missing from the whole machine, everything else down to the last spring washer was there!

Of course, that one missing bolt is out of the...

Time for a bit of an update...

I had a couple of goes at sand casting a new hub and shaft for the single speed pulley setup. It was not very successful because of the fine splines, but I didn't...

Is your top shock mount strong enough?
It looks like you have some sort of bracing visible on the left hand side, but if the mount is just 3mm rhs, you might find it bending after a few big hits, or...

In the pile of parts that came with it (someone saved me the effort of gutting the head) there's a drive cone that sort of fits the spindle spline.
This one looks like it has had a brass reducing...

Plasma cutter, and a very steady hand?

Now thinking about pulleys, the motor shaft is 18mm keyed so should be pretty simple to sort out, but the spindle has a 26 spline 35mm shaft.

My googling has found plenty of splined hubs and...

I'd say you're spot on there - taking another look at the drawing on that site, I now see the stepped hole for the retaining bolt, makes perfect sense to me now that you pointed it out ;)
I'm not...

Wow, thank you Keith! That's a very generous offer.
You have a PM (and a new best friend too :D)

A while ago I came close to buying an older english mill with a #30 spindle, but decided not to in the end.
I'd already bought a bit of tooling in anticipation, thinking that there was a fair chance...

Yep, that was the one.
I wasn't making any judgment on his price or profit margin one way or the other, just asking if that was an average going price for something like this bought from a dealer or...

Thanks guys, that's exactly what I was hoping to hear!
I know that seeing nasty spikes on a DSO screen doesn't always equate to real world problems, but some of the things I've read on the interweb...

Some Anayaks were also sold under the DoAll badge at one stage, and from what I can tell mine was probably the FV-2V model - except the listed top speed is a bit higher than mine.
I've seen lots of...

Thanks Pete,

I have no intention of running this on 240v - the power feed and coolant motors are also 415v so to keep it simple I was just going to leave the wiring as is, and put a 415v VFD on...

@pipeclay - there were two identical mills at the auction, one working (now listed on ebay) and one in pieces (mine).
Is that a realistic price he's asking? I know what he payed for it a week ago......

Thanks Dave,
The motor is a "Reivaj" brand and has 6 terminals.
I'd assumed you just connected the 4 wires used in the existing setup to the VFD output. I think I better do some more reading, as...

Hi all,

After months of searching for the "right" milling machine, I finally settled on one the other day. This is the first mill I've owned, and the plan was to get one that would also be my...

You can get steel flange-less hubs from places like Martin's Trailer Parts - Stock Items for around $60 each - they're used for making things like swing-away spare wheel carriers for 4wds.
It might...