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Type: Posts; User: Karl Robbers

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  1. Replies
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    I'm not a big fan of BOC gear as the price is far...

    I'm not a big fan of BOC gear as the price is far higher than the quality of the product. $900 for a machine to handle thin sheet is getting way up there as I paid $750 for my 50A plasma and I know...
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    I know I am probably in swimming against the...

    I know I am probably in swimming against the tide with this view, but I am yet to find a single redeeming quality for argon mix on steel unless you are spray arcing. I hate the damn stuff -...
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    If you are getting frost on your regulator then...

    If you are getting frost on your regulator then that means one of two things. Either you are doing a lot of welding, (unlikely with a disposable cylinder) or your flow is way too high.
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    According to the Lincoln welding parameters app,...

    According to the Lincoln welding parameters app, assuming .9mm sheet and .9 solid wire with CO2 shielding gas, you would run 18v and 2.5m/min wire. Drop down to .8 wire and you need 18v and...
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    Synergic operation is often used as a sales...

    Synergic operation is often used as a sales feature, but to be honest, I'm not convinced as to how much of an advantage it really is.
    I have used fronius and kemppi machines that were synergic and...
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    I would take the Token Tools machine over a BOC...

    I would take the Token Tools machine over a BOC any day. The cheap BOC machines are little better than the worst ebay specials in my view.
    I have not used a Token Tools machine, but I also have...
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    The pricing is about right and the 2 year...

    The pricing is about right and the 2 year guarantee also bodes well. The leads are a little shorter than I like, but that's not a big issue.
    I'd be sorely tempted to grab it.
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    To be fair, both the Lincoln Powercraft and the...

    To be fair, both the Lincoln Powercraft and the Cigweld are made in China as well and their price point reflects this. The WIA may well be a decent machine, but i just wanted to let you know that...
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    One word of caution about WIA products, they...

    One word of caution about WIA products, they ain't what they one was. By that I mean that they are no longer all Australian built and built to last, most are now Chinese. Their Mig welders have...
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    Any sliding fits? If not, then a simple corner...

    Any sliding fits? If not, then a simple corner to corner joint would be the go, provided your welding skills are up to it. Overlapping the root of the weld by a mm or so will help greatly.
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    As others have mentioned, outright strength is...

    As others have mentioned, outright strength is but one factor in choosing a joint. A bit more information about dimensions and actual application would assist in giving you the best answer. For...
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    Dead right. I have been down this road with a...

    Dead right. I have been down this road with a Peerless welder and while it did perform slightly better on 415 than 240 the difference was minimal and in all probability attributable to the lesser...
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    Not to say that Swarfmaker couldn't run more than...

    Not to say that Swarfmaker couldn't run more than his current 65 PSI, but excess air pressure is a common cause of hard arc initiation often mentioned in plasma cutting tutorials. This is because an...
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    As others have said, there are two basic tip...

    As others have said, there are two basic tip types, drag and stand off. Most smaller plasma cutters use the former as they maximise the machine's capabilities.
    Moisture and oil destroy tips and to...
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    Excellent, you're well ahead of the game and...

    Excellent, you're well ahead of the game and running a proper Innershield set up.
    I can't comment on the Profax gun, but I know that the K126 Lincoln gun is not a cheap item to buy new. The LN 25...
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    Just a bit of a heads up. Be careful of getting...

    Just a bit of a heads up. Be careful of getting too ambitious with your wire sizes if running a standard Mig gun. While 1.6 wire will feed through most mig guns over a couple of hundred odd Amps...
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    Without knowing the exact circumstances...

    Without knowing the exact circumstances surrounding the taxi roll over, I would be inclined to lean towards it being a bit of Hollywood hype that actually came true on that occasion. Out of all the...
  18. Yep, gotta say I'm with you on that one. I...

    Yep, gotta say I'm with you on that one.
    I wonder how one would fare with Worksafe if one of these units failed in the workplace and caused an injury? I know of several that are used commercially...
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    A lot depends on your machine type, which...

    A lot depends on your machine type, which basically fall into two types, HF start and Pilot Arc. HF start need clean metal at the start of the cut where Pilot Arc machines do not, thus giving them...
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    That link is good information to have. Where I...

    That link is good information to have.
    Where I previously worked, we modified and repaired many truck fuel tanks, including hydraulic conversions, filler neck replacement and tank re skinning. I...
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    Interesting. Not too sure if the recessed filler...

    Interesting. Not too sure if the recessed filler cap idea actually became law as I cannot think of a single manufacturer who does that off the top of my head. Another point that comes to mind is...
  22. Totally agree, in fact, the fan blowing from...

    Totally agree, in fact, the fan blowing from behind works very well when mig welding too. All you are looking for is to have a light breeze that at least holds the Zinc fumes in front and away from...
  23. Two things come to mind looking at your photo,...

    Two things come to mind looking at your photo, firstly. Isn't it amazing just how much a crappy weld will hold. Secondly, there's every reason you ever needed to not place any part of your body...
  24. Thread: Weldsmart

    by Karl Robbers
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    Be a bit careful with duty cycles. Very few...

    Be a bit careful with duty cycles. Very few units are rated on a 60 minute cycle and most are rated on a 10 minute cycle meaning 7.5 minutes welding to 2.5 minutes cooling for your 75% example. ...
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    Yes, the old Servex had done a lot of work with...

    Yes, the old Servex had done a lot of work with no thanks and little maintenance. It's still pumping away filling the lines with sludge to this very day I believe.
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    The poor old compressor had seen better days and...

    The poor old compressor had seen better days and the oil had to be filled up - not just topped up, twice weekly.
    Of course, you know where the oil ended up and in the 20,000 degree plasma stream it...
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    Yes, yes and yes, with the addition of dirty...

    Yes, yes and yes, with the addition of dirty parent metal as a possible cause, assuming of course that your tip is not worn out.
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    No such thing as overkill when running a plasma...

    No such thing as overkill when running a plasma cutter and chasing quality cuts. I was once advised to run the same level of filtration for a plasma as you would for breathing air. From my personal...
  29. No worries mate, I hadn't even realised I'd been...

    No worries mate, I hadn't even realised I'd been "ignored" :U
    I have just purchased a Magnum Welders Cut 50 CP plasma and it goes down to 15A I think. While it comes with drag tips, it is a pilot...
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    :wss: I'd like to see a little more meat in your...

    :wss:
    I'd like to see a little more meat in your fillet welds too, they are a little more concave than I would like. Easily enough done by adding just a little more filler wire to your puddle to...
  31. I doubt you will find spares as this machine is a...

    I doubt you will find spares as this machine is a custom modification of an original machine.
    All in all this shouldn't be an expensive repair.
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    Number 8 is ideal for 5-10mm, 12 for 12-20mm and...

    Number 8 is ideal for 5-10mm, 12 for 12-20mm and number 15 covers 25-75mm.
    Number 12 may scrape in on the railway track, but I doubt it. If you are restricted to only one tip, I would go with a 15...
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    Just an update on the whole flow meter subject. ...

    Just an update on the whole flow meter subject. My flow tester turned up and while I haven't had a chance to try it on my ebay flow meter, I did give it a run on the welder at work that was playing...
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    That was a really good exercise and illustrates...

    That was a really good exercise and illustrates the need to run sufficient power in order to properly fuse the weld and penetrate.
    All in all, very valuable.
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    Don't stress too much Gazza. The general thrust...

    Don't stress too much Gazza. The general thrust of what I am saying is that it is good that you are striving for a clean work piece, but that it doesn't need to be surgically clean and moisture...
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    While I think it is great that you are doing your...

    While I think it is great that you are doing your absolute best to weld on clean steel, don't be too concerned about a little surface rust for what you are doing. Tig likes clean material, but it...
  37. Good thought process, but I reckon the whole...

    Good thought process, but I reckon the whole thing has been fabricated, you can tell the flange has been oxy cut and can pick the remnants of a weld between the flange and the socket section.
    One...
  38. His welder will run them provided his power...

    His welder will run them provided his power supply is okay.
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    Not discounting what you said, which is true,...

    Not discounting what you said, which is true, dedicated Tig welders have effectively a vertical volt/amp curve, while stick oriented machines are the more conventional drooper type characteristic. ...
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    Agree on the need for more amperage. Assuming...

    Agree on the need for more amperage. Assuming the fillet welds were also Tig welded, they look very cold.
    The welds are looking much better than your original examples.
    At the risk of sounding...
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    Something strange and very wrong is happening...

    Something strange and very wrong is happening here.
    A 1.6 Tungsten should handle 70A DC easily and be effectively non consumable i.e. not burn up at all. You are running the tungsten on the...
  42. A good baking in either the rod oven or the...

    A good baking in either the rod oven or the missus oven will go a long way to reconditioning those electrodes, not to original specs perhaps, but good enough.
    Okay, for the solid mig question.
    Mig...
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    Galvanised is lovely stuff to weld isn't it. I...

    Galvanised is lovely stuff to weld isn't it.
    I reckon that you are experiencing a combination of the gasless wire smoke and the fumes from the burning Zinc - either way, not good stuff to be...
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    I always believed the same as well, but now I...

    I always believed the same as well, but now I have my doubts since I bought one from an Australian ebay seller that was meant to be a 0-25lpm model. Even with the flow meter fully open, it wouldn't...
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    The issue of gas flow is indeed an interesting...

    The issue of gas flow is indeed an interesting one.
    I am currently going through all the welders at work and repairing/replacing gas lines and sorting our regulators and flow meters - a "G" size...
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    Try and have the wind at your back where possible...

    Try and have the wind at your back where possible or across your body as second choice. Any air movement will certainly help.
    While safety is always a priority, you aren't anywhere near the highest...
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    No worries mate, bikes aren't really my field of...

    No worries mate, bikes aren't really my field of expertise as such.
    Iphones and Ipads on a dashboard - sounds like this is going to be the starship enterprise of the bike world.
    Certainly an...
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    Looking at your picture...

    Looking at your picture https://www.woodworkforums.com/attachment.php?attachmentid=345831&d=1430213938 the forks appear very light for the angle they are mounted at. I realise that there are arms...
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    You must be using a bobbin type flow meter? ...

    You must be using a bobbin type flow meter? http://images.machineryhouse.com.au/products/W161/700/Main.jpg
    Rather than mucking around with regulator pressures and stuffing up the calibration, why...
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    Acco is on the money. It's all about exposure to...

    Acco is on the money.
    It's all about exposure to a substance. Even water is toxic in large enough doses, but safe in smaller doses. So it is with welding fumes, (except lead and cadmium of...
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