MIG and TIG welding Machine?





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  1. #1
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    Default MIG and TIG welding Machine?

    I need some advice before I buy a welding machine.

    I want to buy a TIG welder to weld vehicle body panels and maybe an Alu frame every now and then.

    I see nowadays you get a MIG/TIG combo machine.

    Is there anybody who have one of these combination machines? MIG and TIG ?
    https://www.takealot.com/matweld-wel...v/PLID66968725

    Are they working OK or is it better to just stick with a TIG

    I do not weld much, I need it mainly to weld body panels on vehicles and the odd Aluminium frame every now and then.

    So if I stick to TIG something like this might be better?
    https://arcwelders.co.za/matweld-tig...dc-tig-welder/
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    Default Re: MIG and TIG welding Machine?

    The takealot one doesnít seem to be able to do AC Tig, so canít do aluminium. It also provides limited adjustment for Tig.

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    Default Re: MIG and TIG welding Machine?

    to weld alu you need an AC macchine, the first link is only a dc unit

    also look for a unit with high frequency start, the cheaper units usually dont have this
    Last edited by mullerza; 2020/05/23 at 02:18 PM.
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    Default Re: MIG and TIG welding Machine?

    The machine listed in the thread also looks interesting:

    https://www.4x4community.co.za/forum...elding-Machine

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    Default Re: MIG and TIG welding Machine?

    It sounds like a good idea, the only problem I see is the different shielding gas for tig and mig.
    With tig you use an inert gas, Argon, for all metals steel or alu and everything in between. With mig you use a mix for steel welding to get good penetration and arc stability, puddle control and reduced spatter cutting down on post weld cleaning and time. Argo shield and terryl are usually 2% o2 12% co2 and the rest argon where tig uses pure argon to avoid the tungsten to oxidize and weld contamination. Argon can be used in mig but weld sill have a lot of splatter and strength reducing undercut and loss of ductility.

    You can use a mig to weld alu but there is a lot of splatter and you need to change gas to argon so it would seem the shielding gas is an issue.

    If you don't use a Matweld machine in a heavy industrial application they work pretty well and give no problems, they have been around long enough for serious problems to have been sorted by now
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    Default Re: MIG and TIG welding Machine?

    Which one's spares will be most available? Matweld or Pinnacle?
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    Default Re: MIG and TIG welding Machine?

    Quote Originally Posted by pietpetoors View Post
    I need some advice before I buy a welding machine.

    I want to buy a TIG welder to weld vehicle body panels and maybe an Alu frame every now and then.

    I see nowadays you get a MIG/TIG combo machine.

    Is there anybody who have one of these combination machines? MIG and TIG ?
    https://www.takealot.com/matweld-wel...v/PLID66968725

    Are they working OK or is it better to just stick with a TIG

    I do not weld much, I need it mainly to weld body panels on vehicles and the odd Aluminium frame every now and then.

    So if I stick to TIG something like this might be better?
    https://arcwelders.co.za/matweld-tig...dc-tig-welder/
    Here's a very short video you may find helpful.

    https://www.youtube.com/watch?v=oXOEYGmLXG0

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    Default Re: MIG and TIG welding Machine?

    How do one determine what thickness of filler wire you will need?

    For example if I use it to weld mild steel body panels of 0.8 - 1mm what thickness of wire must I use compared to let's say 5mm mild steel?

    Same with alu, let's say I need to weld between 2 and 5mm Alu ?

    Can one just stick to one thickness of wire or do you need different thicknesses?
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    Default Re: MIG and TIG welding Machine?

    You can use a thin filler on tig for the thicker stuff as can you use a thicker filler for thin stuff within reason the important part is your heat range on the machine and how fast or slow you feed the filler wire.

    Matwed spares are readily available places like Builders stock the full range of accessories and consumables.
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    Default Re: MIG and TIG welding Machine?

    Before even thinking of what size filler wire you need you are first going to have to practice alot with 2. 5mm electrodes and 2.5mm2 filler wire. TIG is not easy. You need an steady had, lots of concentration and very good preparation.
    And that just for mild steel.

    Aliminium is whole different kettle of fish. After months of mild steel Tig welding (5kg of filler wire used up) I can say that I'm semi OK. But I'm not even close to getting a half decent Aliminium weld.. Must be my welding machine :-)

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    Default Re: MIG and TIG welding Machine?

    Quote Originally Posted by hbannink View Post
    You can use a thin filler on tig for the thicker stuff as can you use a thicker filler for thin stuff within reason the important part is your heat range on the machine and how fast or slow you feed the filler wire.

    Matwed spares are readily available places like Builders stock the full range of accessories and consumables.
    I found welding shops and Adendorf much better.

    Chamberlains charges R500 for electrodes the same electrodes are R200 at Adendorf.

    The builder warehouse in my area never have a pack with 3 unbroken cups and they normally only have number 5 cups.

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    Default Re: MIG and TIG welding Machine?

    Quote Originally Posted by Tiaan Pot View Post
    Before even thinking of what size filler wire you need you are first going to have to practice alot with 2. 5mm electrodes and 2.5mm2 filler wire. TIG is not easy. You need an steady had, lots of concentration and very good preparation.
    And that just for mild steel.

    Aliminium is whole different kettle of fish. After months of mild steel Tig welding (5kg of filler wire used up) I can say that I'm semi OK. But I'm not even close to getting a half decent Aliminium weld.. Must be my welding machine :-)
    remember the 3 C’s of alu welding....
    clean
    clean
    clean

    acetone works well to clean the ali. start with a thickish piece of alu and just lay down beads to practise.

    another tip, use ss filler rods on mild steel
    Last edited by mullerza; 2020/05/23 at 03:26 PM.
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  13. #13
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    Default Re: MIG and TIG welding Machine?

    Thank you for all the input, I went for that Pinnacle machine on the other thread.
    Will see how it goes.
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  15. #14
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    Default Re: MIG and TIG welding Machine?

    Quote Originally Posted by Tiaan Pot View Post
    I found welding shops and Adendorf much better.

    Chamberlains charges R500 for electrodes the same electrodes are R200 at Adendorf.

    The builder warehouse in my area never have a pack with 3 unbroken cups and they normally only have number 5 cups.
    I use Instruweld in Honeydew, prices and service is tops but the purpose of Builders is just an example of the availability of consumables and accessories I am sure that even Makro and pretty soon Checkers will also start stocking it I know the hyper does

    Bonus part of dealing with a specialist shop like Instruweld is that they know their product and can give valuable advice to beginner and experienced users alike.

    @Pieter, I think you have made a wise choice. With welding technique and how to remember youtube is your teacher, best of luck
    Last edited by hbannink; 2020/05/23 at 05:27 PM.
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    Default Re: MIG and TIG welding Machine?

    Quote Originally Posted by hbannink View Post
    I use Instruweld in Honeydew, prices and service is tops but the purpose of Builders is just an example of the availability of consumables and accessories I am sure that even Makro and pretty soon Checkers will also start stocking it I know the hyper does

    Bonus part of dealing with a specialist shop like Instruweld is that they know their product and can give valuable advice to beginner and experienced users alike.

    @Pieter, I think you have made a wise choice. With welding technique and how to remember youtube is your teacher, best of luck
    Changing to the gas lens system has dramatically improved my tig welding at little cost for anyone still using the standard collet body .

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    Default Re: MIG and TIG welding Machine?

    Have a look at pulsed MIG machines - not sure what they cost now. I have a multi-mode one and on pulsed MIG aluminium welding is really good. I even managed to weld thin checker plate (0.9mm?) with 1.0 mm wire. I did need short runs though.

    Welding steel with pulsed MIG is also very good - it's the only time my vertical welds looked professional, unlike when I try it with stick welding.

    With a practiced hand, TIG is very neat, but extremely slow when compared to pulsed MIG


  19. #17
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    Default Re: MIG and TIG welding Machine?

    Im a weekend warrior and have found that by the next time I weld I forgot what I learnt the first time.But what I have learnt is that for body panels for me my mig on spot weld type setting is far better. Body panels for me at least are very difficult with tig

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