Australia Promica X3 CNC Mill for Sale


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Thread: Promica X3 CNC Mill for Sale

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    Default Promica X3 CNC Mill for Sale

    Seig X3 milling machine converted to CNC using a Promica Kit. Options include:

    - 400 X 280 X 400 mm working area
    - Thompson ball nuts and screws
    - Dual ball nuts (minimise backlash)
    - Optical sensors on X, Y Z
    - Gecko G540 controller and power supply
    - Mach 3 control
    - Machinery House Mill Stand
    - approximately 5 MT3 collet holders and some assorted tooling.

    The PROMiCA conversion kit was the premier CNC conversion kit for the X3. It is properly built with belt drives and HDPE covers to protect the workings. Sadly the kit is no longer available, here is your chance to own one of your own.

    Located in Sydney, Australia.

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    Default Re: Promica X3 CNC Mill for Sale

    No use without a price.

    Cheers
    Roger



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    Default Re: Promica X3 CNC Mill for Sale

    Why do I get the impression that having built the thing it failed to perform as it's basically a manual mill and fraught with problems hence the sell it on .....now it's second hand so the selling price will be half what it cost.

    I'd say about A$1,500 would be a good opener.....that's pretty reasonable as it's only got a MT3 spindle.........no power draw bar.

    Reworking a manual mill to CNC is dependent on the skill of the person doing it not the value of the components, and you get no warranties with a second hand machine.

    BTW.......can the spindle actually cover the full 400 X 280 work area?

    I think your best bet would be to list it on EBAY with lots of photos and a detailed description then post a link to the listing number here.
    Ian.



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    Default Re: Promica X3 CNC Mill for Sale

    Part of the problem may be that the machine is apparently using Morse Taper on the spindle. MT is fine for drilling, but totally unsuited to milling, as the vibration can shake the fitting loose if there is no draw-bar. Perhaps the vendor should mention whether the unit has a draw-bar?
    But then, perhaps the spindle could be replaced? That should work, surely?

    Cheers
    Roger



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    Default Re: Promica X3 CNC Mill for Sale

    Hi, I think these machines with the MT3 do (must) have a draw bar as they are regular manual mill/drills..

    The problem is you cannot have a power draw bar to make tool removal quick and easy.

    It does work as a holding system and the tooling with that taper is quite cheap, but it's all manual removal and you don't want to overtighten the drawbar or it's curtains.......Morse tapers can stick ever so tight when a heavy hand is at work.

    For a spindle replacement I would go for the R8.....ISO30 would be nice, but I don't think it's available.

    With R8 you can go to a sort of TTS system with parallel shank tooling....and a power draw bar.

    One big draw back on the SX3 and other column type mills that formerly used a quill is the using of the head casting to do the Z axis moves..........this leads to having the head nod sympton as the dovetails are not designed to run freely up and down the column.

    Just fitting linear ways to the column makes a mongrel into a thoroughbred.

    I think a $1,500 starting bid on EBAY with a 10 day duration would get the ball rolling.
    Ian.



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    Default Re: Promica X3 CNC Mill for Sale

    Quote Originally Posted by handlewanker View Post
    Hi, I think these machines with the MT3 do (must) have a draw bar as they are regular manual mill/drills..

    The problem is you cannot have a power draw bar to make tool removal quick and easy.

    It does work as a holding system and the tooling with that taper is quite cheap, but it's all manual removal and you don't want to overtighten the drawbar or it's curtains.......Morse tapers can stick ever so tight when a heavy hand is at work.

    For a spindle replacement I would go for the R8.....ISO30 would be nice, but I don't think it's available.

    With R8 you can go to a sort of TTS system with parallel shank tooling....and a power draw bar.

    One big draw back on the SX3 and other column type mills that formerly used a quill is the using of the head casting to do the Z axis moves..........this leads to having the head nod sympton as the dovetails are not designed to run freely up and down the column.

    Just fitting linear ways to the column makes a mongrel into a thoroughbred.

    I think a $1,500 starting bid on EBAY with a 10 day duration would get the ball rolling.
    Ian.
    Do you have experience with a SX3, there spindle is available in different tapers, and for a small machine are quite capable of working as good as your small $10,000 machine, here is a video of a converted one, they do also come with rails on some of the CNC models



    Mactec54


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    Default Re: Promica X3 CNC Mill for Sale

    Nope.....a manual mill retrofit is not my cup of tea, especially with a quill and MT3....I prefer to stay with the real stuff that has been designed from the floor up as a CNC mill.......mine also comes in a cabinet with fully enclosed electronics too.

    This is not to say that the SX3 is crap..........as long as the CNC parts are fitted correctly you can live with any short comings that arise.

    I just have to wonder after all that retrofit work why it's being sold on.......with no indication of the working history, the resale value drops off dramatically if it's been used for a bit.
    Ian.



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    Default Re: Promica X3 CNC Mill for Sale

    I just have to wonder after all that retrofit work why it's being sold on
    Yah - crucial Q.

    Cheers
    Roger



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    Default Re: Promica X3 CNC Mill for Sale

    Hi,

    I find the comments regarding this machine a bit elitist. You guys seem to be putting it down because it is not a $20,000+ purpose built CNC machine. Keep in mind these conversions are not trying to compete with more expensive machines.
    Its a bit like someone who owns a Aston Martin advising someone, not to waste their time buying a Hyundai.

    I have a manual Titan TM20VL converted to CNC. Sure it has it's limitations. I've also looked over DC Teachers SkyFire CNC mill. It has around the same work envelope. It cost him about $24,000. Mine cost about a 1/10th of that. Admittedly, my machine has nowhere near the capability or quality of the SkyFire, but I can't justify the cost of the SkyFire either.

    You will find there are people who will say don't waste your time a a SkyFire machine. Spend the $60,000 and but a proper machining centre.

    People purchase CNC machines based on a number of criteria. Just because the machine doesn't meet yours, you don't need to put it down.

    Maybe the guy is selling it because he wants to upgrade to a Skyfire. But then, he's probably been scared away.

    Cheers,

    Peter

    -------------------------------------------------
    Homann Designs - http://www.homanndesigns.com


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    Default Re: Promica X3 CNC Mill for Sale

    Hi Peter

    No, not putting it down as you suggested, just thinking that a price and some history would be very desirable. Like buying a used car.

    Cheers
    Roger



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    Default Re: Promica X3 CNC Mill for Sale

    Hi, I also agree on that score........it's not a comparison that's in the air, it's an evaluation of a retrofit and all it's drawbacks......this is not an elitist observation as it's poles apart from a $20,000 dedicated and designed from the ground up machine..

    True it can do a job and make almost anyone happy to see chips fly.......the "revue" was just a thumbnail sketch of the type.......the price will determine how it moves.

    Without a warranty it's a crossed fingers exercise unless you can evaluate it before parting with the dough......probably would be the case for a pick up only item.

    I think, as a complete package, probably sans computer, I'd want a demo to see it produce a part to some form or dimension before deciding on the price.
    Ian.



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    Default Re: Promica X3 CNC Mill for Sale

    Google is your friend.

    Here's the machine on Gumtree.
    https://www.gumtree.com.au/s-ad/cast...kit/1170017919

    $5000 is probably the right starting point for negotiating down from for a converted SX3, assuming it is in good working order. As far as I know the Promica kits were quite solid and of reasonable quality.

    I'd certainly want to inspect the machine and see it working before parting with any cash though.

    Cheers,

    Peter

    -------------------------------------------------
    Homann Designs - http://www.homanndesigns.com


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