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Inverters generally can be very efficient, but we are talking about inverter welders. A high end machine has an efficiency of about 86%, others don't even state it so it is more likely 80% or...

Then there's the efficiency of the inverter (say 80%) and a power factor of 0.8 so that's close to 24A. Imax is specified at 26A so that's about right.Fortunately, the mains has a large reserve and...

I meant to use the clamp meter to measure the mains current.

I have a 300 mm long "extension cord" made from three separate wires with plug and socket that I use to make current and earth leakage...

Why not do it again but monitor the mains?

Be careful though

Jack

I think that is a different issue. All machines have a maximum draw (Imax) that is higher than the breaker requirement. The breaker requirement is set by Ieff, which is a function of duty cycle and...

Have a look at the specifications of your circuit breakers. For a 10A circuit, the CB could be anything from 16A to 25A but more important is the trip curve.
...

People making replacements might err on the side of caution but I think the manufacturer would stick to the rating to contain costs.

AC capacitors are rated for AC voltage assuming a sinusoidal...

It is true that plasma cutters with inbuilt compressors are not new, what is new is the baby Unimig compressor that has the same footprint as the cutter itself.

However, the conversation has...

I don't have a Unimig plasma cutter, I was looking at the compressor as a companion for another brand to make it a bit more mobile. As it is, unless the job is at my workshop, I look at the plasma...

Unimig have a compressor for their RAZOR CUT 45 Plasma Cutter.


Has anyone tried it? It doesn't look big enough to operate properly.

Here is the description:


Our new RAZOR CUT 45 Air...

Karl was referring to people carrying cylinders in closed vehicles. If there is a leak, there is a good chance of it being followed by a bang. Flashback arrestors will not stop that and, in any case,...

Acetylene is a potentially dangerous gas.

Karl mentioned the draw-off rate - the 1/10th rule - and the requirement of using the cylinder vertically. In addition, if the cylinder has been on its...

I'd be a bit careful.

BOC will always take back its own cylinders - even if they are way out of date.

BOC cylinders are marked and as far as I know, that will only take their own cylinders.
...

Yes, Steve has many good points there.

Everyone needs to consider their own requirements.

Just as a comparison, Bunnings will refund the $200 deposit, others don't, BOC doesn't have one.


...

That is true (Colfax is the parent) but ESAB, originally a Swedish company, has been around for a while - they invented flux coated ARC rods.

They are also part of the group that owns Thermal...

I don't think you ever own the cylinder as it gets swapped for a refill. Owning is problematic because they expire.

Not everyone will give your deposit back. If you decide you want a bigger...

Yes, that's a very good start.



Yes, it's not a bright idea someone had yesterday.



There's the feel in the hand, but there's also the control of the gas and flame - that's the hard part...

Just another point that you may already be aware of - you can't gas weld steel with oxy-propane; it has to be oxy-acetylene.

Jack

Perhaps it's just me but I think consumers do reviews and consumers rarely buy gas cutting and welding equipment. In the same way, there are lots of reviews for Unimig Vipers as they are consumer...

Out of focus but that looks like thread lock

Jack

https://metalworkforums.com/image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAKsAAACECAYAAADvEtv6AAAgAElEQVR4Aeyd939j1bX2...

Here is a video for stuck screws.

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

This fellow didn't drill enough of the screw head off - that's why the chuck didn't screw off smoothly.

They...

I've never had to do it but I have seen the videos.

Most just undo the screw - they are tight, bit not stuck.

The few that are stuck drill the head of the screw off and then remove the chuck as...

Sounds like something the Coyote would do to get a speed boost!


@clear out, I was going to take a picture but he was too quick!

I don't think you are alone China.

Strictly speaking, dish washing liquid (and especially dish washer liquid/powder) is corrosive but if there is a small leak with gas under pressure escaping, not...

According to the Occupational Safety Fact Sheet - Compressed Acetylene Gas from the University of Pennsylvania:
Leak Test - Once all components are connected, perform a leak test with a soap and...

Its specifications are illusive. Which is it?



5 kW continuous and 10 kW for < 25 seconds
5 kW sustained
5 kW nominal and 10 kW peak (1 second)
50A or 30A
~22A continuous, 31A for 30...

The expense, yes, but being behind in technology? I wouldn't have thought so. I think, for example, that many of the European welders in use here are on par or better than the Millers and Lincolns....

It is impressive but it would have been nice to show what the welding machines were actually supplying.

The video is a year old but I couldn't find much of an online presence. Considering what the...

Yes, Hampdon resells US SCC pedals and makes changes to suit local welding machines. That comment referred to the digital pedals.

"Some are digital though and hard to replace - Hampdon doesn't do...

Yes, a foot pedal or any other device used for remote control. I do use SCC pedals and the American site gives a circuit diagram with pin numbers. Unfortunately, they don't usually list Australian...

Thanks Kryn. I guess I could try Southern Cross at Edwardstown as well but I was hoping to get a heads up this evening.

I'm not sure why the information is secret - why not put it in the manual?
...

Can anyone tell me the plug details and pin connections for the remote connector?

WIA 200i AC/DC Weldmatic

Strangely, it's not in the manual.

Thanks
Jack

I can't measure one to check at the moment but it looks like a Rectus Type 21 as used by BOC and ESAB as shielding gas connectors.

I think it is the same as:



Camozzi Mini
Cejn 50
...

Yes but you had to check the date to get the correct silver content for the job. Up to 1945, they were 92.5% silver. After that they were 50% silver.

They are hard to find now because there was...

What are you calling Bakelite?

Bakelite (phenol formaldehyde) is generally moulded and that would not machine well. Wouldn't a more modern plastic like an acrylic be better?

Edit: "sliding...

I don't think you can search for the name of an image anyway.

The image name appears if you hover over it and if you click it to open it so it would be nice to have a meaningful name. I think it...

Which product(s)?


The INOX product range includes lubricants from fine penetrating oils to

heavy high temperature grease and just about everything in between.


Jack

I guess whoever made the label didn't know the difference. If you look at the product spec is says:

Contains highly concentrated, high-quality silicone oils

Silicon is the antithesis of a...

I assume that's silicone, not silicon.

I don't use silicone oils as I have too many electrical contacts around. Silicone kills electrical contacts.

Jack

Yes, you were very lucky.

I used to visit a lot and I knew current prices. More often than not, it was cheaper to go to a proper tool shop and buy new.

Jack

You were very lucky. Every Cash Converters store I visited thought it was a Snap On truck and charged accordingly.

Jack

I think it is just tarnished - cupric oxide is black. Sulphates and phosphates will speed things up but oxygen will do its work eventually.

Jack

WD40 is meant to displace water and then evaporate quickly so not a practical solution.




If the OP is not using copper coated wire, that should probably be tried first. Other than that, the...

I believe that is an approximation that is valid if the RH is greater than 50%.

It should be:

Td ~ T - (100 - RH)/5

Where:

Td = due point (Celsius)
T = observed temperature (Celsius)

I don't really know why so many people buy cheap "MIG" welders when they could probably do a better job more quickly and more cheaply with an ARC welder. Sometimes it is not the right tool for the...

Karl, I see we are basically on the same page - just with slightly different perspectives.

On AC too, I think we pretty much agree. I would point out, as I'm sure you know, that AC distribution...

Perhaps we are talking slightly across purposes. Low hydrogen, per se, does not improve the properties of the weld; it is the presence of hydrogen that is detrimental to the properties of the weld....

I'd just stick with what you know, although it wouldn't hurt to try some others just to see what they are like.

You are not going to get a higher tensile weld from a low hydrogen electrode. Low...

With some things I think you just have to try them and see how they work for you. Everyone is going to have their own opinion of this and other issues.

A triangle wave has an RMS value of about...

Thanks for that. I found another as well and it looks like M18 is an exception. All the other sizes have the point-to-point diameter about 0.5mm less than the nominal size - as you would expect. The...