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Plasma Cutters for general maintenance?

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  • Tom68
    replied
    CNC cutting looks great partly because of the controlled environment, add some paint, rust, varying distances, angles and it all starts getting pretty ugly, actually doesn't take much deviation from ideal to start wrecking cutting tips like they're going out of fashion.

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  • tmac450
    replied
    Tools, especially welders and the like, tend to spike their power consumption when under load. Sometimes more than double their running capacity. That's why the larger capacity generator is required and inverter generators don't like tools.

    Also, most generator ratings will be quoted at their peak, not general running capacity, and kva is not a direct reference to wattage (ie 5,5 kva is not 5500watts, it's actually 4400w). This also contributes to the need for a higher than expected output to run certain equipment.

    Yes, reducing the amperage on the cutter for a smaller generator will help. But the Razor Cut 45's specs state that it requires 5.5kva to operate which is continual supply, not peak.

    That said, some generators perform above spec and you can get away with it. It's well worth giving it a crack to find out, but don't try to force the issue. You won't hurt the generator (it'll just stall out), however, you can risk damaging the cutter's electronics if you try to run it for too long without enough juice.

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  • Medium Rare
    replied
    Ended up getting the unimig razorcut 45, will try and give it a run this weekend. I have a 5.5 kva generator that I was going to atleast occasionally run it on but I misread the uninmig specs, it requires 5.5kva to run with a minimum 10kva generator - seems excessive to me I would of thought maybe 7 kva minimum size. But specs aren't always gospel so will try and run it on the genny and see what happens . I guess I can always use it at a reduced amperage on the generator.

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  • hairyone
    replied
    Thanks for replying to my reply Medium Rare.
    Anything uneven stumps CNC.. Yay Humans.
    Edit: Von was about Yesterday.... Good value.

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  • Medium Rare
    replied
    Thanks for the input folks. A little more research for me required before purchasing however I think I may be going for the unit in 380's link.

    FYI Hairy, the cutting in the youtube vids you posted is actually neater than I expected. The first project I have in mind with the plasma cutter is modifying a plough, I also recently purchased a heap of second hand panels, gates, stairs/walkways and general steel from an abattoir that upgraded their yards. The plan is to use that to upgrade my yards, so plenty of cutting to be done.

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  • hairyone
    replied
    Medium Rare: You could-may-elaborate?
    What? Your D9-Dozer requires a bucket?
    Logistics with cutting-lots of 12mm plate?
    Maybe you've a Nuclear Bunker in mind?

    Leave a comment:


  • 380EXCQLD
    replied
    Originally posted by Medium Rare View Post

    Yeah I was thinking a larger one would be more suitable. I don’t like the look of the displays on the cigweld units, I just thin they may be a future point of failure - simple old dials, knobs and switches would be preferable.

    what are these things like with the built in compressor, again a little sceptical about adding unnecessary complexity to things however can see a benefit when using it away from the shed? Any issues with warranty? https://www.totaltools.com.au/157475...cutter-u14001k

    Wouldn’t be using it professionally just the odd job, tired of using a 9”.
    KISS

    This would be my pick.
    https://unimig.com.au/product/razor-...plasma-cutter/

    We had an older Cut 30 at my previous job and it copped a hiding for 10+ years with only a torch replacement due to abuse.
    That thing would've cut 100's of metres.

    Clean dry air and clean surfaces will give you the best cuts and longest consumable life.
    Whenever possible cut over a bath to reduce the crap that ends up in your lungs... or wear an airflow helmet.

    I've got 3 Unimig welders that have given me no issues. The tig would be about 13 yrs old.

    Leave a comment:


  • tmac450
    replied
    Originally posted by Medium Rare View Post

    Yeah I was thinking a larger one would be more suitable. I don’t like the look of the displays on the cigweld units, I just thin they may be a future point of failure - simple old dials, knobs and switches would be preferable.

    what are these things like with the built in compressor, again a little sceptical about adding unnecessary complexity to things however can see a benefit when using it away from the shed? Any issues with warranty? https://www.totaltools.com.au/157475...cutter-u14001k

    Wouldn’t be using it professionally just the odd job, tired of using a 9”.
    Can't say we've ever had any issues with the Cigweld displays, but you can never say never.

    The Unimig is fairly new, but again we have very few dramas with their gear. The cut capacity of that one is in line with the Cigweld 35.

    We used to have a different brand a few years ago with built in compressor and they seemed quite reliable (can't remember the brand right now).

    Leave a comment:


  • hairyone
    replied
    Well, as I said; I likely don't know.
    My YouTube-search gave results.

    Here's a couple (boring) examples.
    I didn't look into a cost or software:

    Or 'puter either. Cad-Cam is CPU?
    Maybe an existing-file is low-load?

    My posts cater for/also/broad DBW.
    Skip through these vids for the gist:



    ..

    Leave a comment:


  • Medium Rare
    replied
    Originally posted by hairyone View Post
    I haven't any real idea so take this with a grain of salt.
    A Plasma Cutter fitted atop CNC Bench would be fun.

    ie. I'd purchase my Cutter with a view to a CNC set-up.
    Search on YouTube "CNC table for my Plasma Cutter".

    That's likely another few grand more $$$ @ future-date:
    A couple of back-yardies may-pay; a fun hobby maybe?

    At a guess? All it would be: Is a head-able to-be mounted:
    Together with a long-flexible lead that stays out of the way.
    Unfortunately don’t have time for any further hobbies and I’d say one of those setups would be a very poor second to a CNC water jet cutter as far as finish goes.

    https://youtu.be/AWoBKAUw8hQ

    Leave a comment:


  • Medium Rare
    replied
    Originally posted by tmac450 View Post

    Haven't used them, but sold quite a few, especially the Cigweld unit in your link.

    Can't recall every having one of them come back for warranty or repair, even the previous model for that matter.

    Same can't be said for some of the lesser known brands we've seen.

    My tip is to stick with the known brands, avoid cheapies or home brands.

    Unimig and Lincoln are also good ones to look at.

    The BOC one you listed says it's only rated to 9mm mild steel. Even the Cigweld 35 is right on your limit at 12mm.

    Might need to look at the Cigweld 45. It jumps up in capability, but also price unfortunately.
    Yeah I was thinking a larger one would be more suitable. I don’t like the look of the displays on the cigweld units, I just thin they may be a future point of failure - simple old dials, knobs and switches would be preferable.

    what are these things like with the built in compressor, again a little sceptical about adding unnecessary complexity to things however can see a benefit when using it away from the shed? Any issues with warranty? https://www.totaltools.com.au/157475...cutter-u14001k

    Wouldn’t be using it professionally just the odd job, tired of using a 9”.

    Leave a comment:


  • hairyone
    replied
    I haven't any real idea so take this with a grain of salt.
    A Plasma Cutter fitted atop CNC Bench would be fun.

    ie. I'd purchase my Cutter with a view to a CNC set-up.
    Search on YouTube "CNC table for my Plasma Cutter".

    That's likely another few grand more $$$ @ future-date.
    A couple of back-yardies may pay; a fun hobby maybe?

    At a guess: Most-it would require is-a mountable-head?
    Together with a long flexible-lead to stay out of the way.

    Learning & applying that software & skills would be fun.
    I'd sit-supervise cool-shaded. Oettinger fully productive.

    Leave a comment:


  • tmac450
    replied
    Originally posted by Medium Rare View Post
    Looking to get one, would need to cut up to 1/2" plate - looking at these two presently. Anyone had any experience with these models, do I need to go larger?

    https://www.totaltools.com.au/125640...xoCvWsQAvD_BwE

    https://www.boc.com.au/shop/en/au/sm...xoCWtQQAvD_BwE
    Haven't used them, but sold quite a few, especially the Cigweld unit in your link.

    Can't recall every having one of them come back for warranty or repair, even the previous model for that matter.

    Same can't be said for some of the lesser known brands we've seen.

    My tip is to stick with the known brands, avoid cheapies or home brands.

    Unimig and Lincoln are also good ones to look at.

    The BOC one you listed says it's only rated to 9mm mild steel. Even the Cigweld 35 is right on your limit at 12mm.

    Might need to look at the Cigweld 45. It jumps up in capability, but also price unfortunately.
    Last edited by tmac450; 03-02-2021, 03:33 PM.

    Leave a comment:


  • Medium Rare
    replied
    Looking to get one, would need to cut up to 1/2" plate - looking at these two presently. Anyone had any experience with these models, do I need to go larger?

    https://www.totaltools.com.au/125640...xoCvWsQAvD_BwE

    https://www.boc.com.au/shop/en/au/sm...xoCWtQQAvD_BwE

    Leave a comment:


  • Tom68
    replied
    What I love is clean cuts on thin material and the ability to cut non ferrous metals.

    Leave a comment:

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