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If you look at my previous post, the order in my shopping cart just a few minutes ago had $0.00 for delivery.

I'm hardly a high volume customer, just occasional odds and ends

In fact I just...

I've had good luck with them. Their pricing is all over the place, some things cheaper than eBay to others ridiculously expensive, in fact mostly on the expensive side. But you can check the prices...

Spins off..... sound like you could do with a locking arrangement - the photo shows what Waldown have done

Re carbide wheeels, I came across these guys when I was looking up specs on google, their...

Hi Grant,

If you set up a web account with Blackwoods, you can order online, find out stock position etc. then they will deliver to wherever (maybe to work reception) and delivery is free,...

I thought all the "recommendations" about not stopping a surface grinder after the wheel was dressed was that the position of the wheel on the spindle was critical to balance / concentricity. E.g the...

Top bunk !!! - obviously you've done time before

Not sure why a VFD would upset things re balance, if the speed was slowly ramped up you think that the inertia of the wheel would be less likely to...

I chucked it on as soon as I read your post.

Also had a little go dressing with the remnant of the diamond dresser, seemed to get into the wheel pretty well - lots of dust though

Suppose the $4...

It's perfect, I was more worried about balance rather than instant death. In any case it's not doing a million revs and it's well guarded.

It runs much smoother than the old wheel, and I'm too...

You've inspired me to have a look at my stockpile

I must have 200Kg plus of assorted wheels I got with my T & C grinder, but only one green wheel

It's chipped but rings OK, I guess the chip...

I was having trouble adjusting the table to 5 degrees negative, normally the adjusting screw locates in a dimple underneath it. It's an elongated depression, looks as though Waldown put it there, but...

I remembered the 5 degrees, but couldn't remember direction, naturally given two choices, the guess is going to be wrong

For some reason the table's harder to adjust when pointing down, must be...

Here are a few snaps and a little about the initial maintenance

1. Grinder, Waldown picked up on Grays a couple of days ago

2. I must be getting old, or perhaps have too much time on my hands,...

They do say "diamonds are forever"

Talk about a timely response.

Just got the grinder back together after new bearings and rewire

Gave the little eBay diamond dresser a whirl, after what seems like about half an hour of...

Thanks Phil,

I've got both, I bought one of those little eBay things years ago and have never used it, it looked a bit puny when it arrived. I've also got no shortage of old Alox wheels as...

The wheel is shape 6A2 in the attached link

http://www.kinik-abrasives.com/301E0507/img010.pdf

D=150, W=20, X = 3mm (thickness of abrasive

I've acquired a bench grinder with a diamond wheel. The wheel's got a bit of a hollow in it, but there seems to be a fair bit of meat left. I've had a look at the manufacturers website, but there's...

I successfully realigned my lathe using RDM. Just used a length of BMS 38mm or so. It had a ground finish with uniform diameter and was round enough for RDM purposes. It was mounted in the 3 jaw with...

Thanks for the input folks

Now running on the TAFE standard, the FWD UP never felt right

Very inexpensive lathe upgrade I think

Good enough for TAFE is good enough for me

So down for (normally) ON (FWD), and back up to the detent for OFF, just like all the other switches (lights, power points.....) I use

Next job, swap...

Anyone remember which way the Colchesters in the TAFE's were wired ?

If so I'll make that my standard

I think it's sensible to have all machines in a workshop the same

I occasionally run my...

Is there a standard (for Australia) which says which way the spindle control lever should operate?

Is it up for forward, so the chuck direction is opposite to the direction of the lever? That...

..

The two step spindle pulley is 1.50 and 2.75 inches, motor pulley is 3.25 inches (nominal sizes ?).

Spindle pulley is "fixed", the motor pulley has a knurled retaining nut, speed change is just a...

I've got one, it's older, but the motor speed should be the same (2850)

It's fitted with the 3000/6000 pulley set

I'm happy to measure them up if you need the dimensions

Agree wholeheartedly with the little thank you pressie

Also a little review over dinner sounds very nice

John

There are heaps of different collet forms.

It could be Ortlieb (original makers I think, but widely copied)

See http://www.ortlieb.net/en/products/clamping-systems/tool-clamping/collets.html

Undercutting can be done with a piece of hacksaw blade, grind off the "set" on the teeth though (sort of like a safe edge on a file)

Also don't use emery to polish the commutator, use sandpaper....

I've heard reports of the last tour and I'd love to go - in working hours is fine with me

If you think that takes more than one view to get your head around, have a look at this

https://www.youtube.com/watch?v=ccjTMQwKWNs

(quite short video)

Relevant to the course - stiffness

I have plenty of that today after two big days of benchwork and weightlifting

Scraping has a strange effect on density of material, the more you scrape the...

Hi all,

I mentioned this guy yesterday, seems to know a bit

Pretty good explanation of why you might scrape something, I think I'll make it required viewing for certain persons who couldn't...

What do I need to do to get on the list ?

I tried a little test thread, never cut anything that coarse before

Used a bit of 25mm mild steel, sticking out about 300 mm, relieved down to 20 mm in the centre

Then used a negative...

This looks like an easy lathe job, just needs a form tool to cut the coarse thread.

Fine thread can be Whitworth or UNC, it's just to drive the bit forward

But.... what about the cutting edge,...

14 tpf(oot) is 1 1/6 tpi, that's an odd size

a 20mm metric thread is about 15 1/4 tpf(oot), is that close enough ?

what are you doing for the corresponding nuts ?

If you need to remake...

You're right about the screw, it lines up with the spindle alignment slot

I pulled out the grease nipple, but it's all clear behind, I can see the drive rod rotating, it's clean so I don't think...

I have a type H Waldown drill (3000 / 6000 rpm ?)

On the front (in line with the spindle) it has a grease (or oil) nipple and a few inches directly below that a screw

Presumably the nipple is...

Maybe the ex Ballarat Potteries unit is not really an EDM machine. They are also "Metal Destructors" which are specially made for removing broken drills and taps etc. I'm not sure what the difference...

Looks like what's needed, head and volume, I'm hoping the stated volumea typo is "per min". 120 L/H doen't make sense

I have the original oil tank. It's got about six compartments. Each compartment has a hole at the top leading to the next one. The oil returns to one end then flows from one compartment to the next...

I got the machine set up and operating yesterday, mounted the head on the T&C grinder, plastic tray on the table, steel plate in the tray clamped to the table. So there's nice x,y,z positioning....

I'm setting up an EDM die sinker, but am mising the submersible oil pump. The catalogue has the specs for the pump as 650 gph (US galls) max, 10 psi max.
I was thinking a coolant pump may do the...