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  1. #1

    qidi X max / X pro Larger nozzle diameter

    Hi
    I bought the X max. Not perfect, but so far great.

    Already used up the 1kg spool with PLA since friday, printing out lots of drawings I had in inventor for brackets, holders etc. + some useless stuff from thingiverse.


    Qidi support says its not possible to use a nozzle larger than 0.4mm.

    However in the Qidi software I can set the nozzle diameter to anything I want.

    Their english isnt the best and they cant really explain why its not possible.


    Anyone who got any of these two printers who have done a larger diameter nozzle?
    Printing 0.3 layer heights (0.32 max) on one of my large things took me 28 hours. Adjusting to 0.65mm layer height, faster speed and so on could save me A LOT of time.

    I know layer bonding is pretty bad at that size and so on but its only for prototyping.


    If its impossible because of the extruder motor and so on, im tempted to buy an open 3d printer which is cheap, just for quick and rough PLA printing then use the Qidi for the final thing.


    regards

  2. #2
    Super Moderator curious aardvark's Avatar
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    Jul 2014
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    7,022
    it boils down to how easy it is to change the nozzle.

    Oh and with a 0.4mm nozzle you CAN print a 0.4mm layer - the slicer will complain, but I've done it plenty of times with simply3d, ignore the message from simplify3d and it works just fine.
    That's on my replicator clones. I have a 0.5mm nozzle on my big delta and regularly print at 0.4mm and 150mm/s. It's crude and rough, but functional.
    Just bear in mind that with a larger bead and layer height, you generally need to print slower to get the extruded plastic cooled properly.
    If you were going to fit say a 0.7 or 0.8mm nozzle for a 0.65mm layer height, then you'd probably need to upgrade the cooling duct system.
    But remember, you will need to print significantly slower - so often what you gain in layer height you lose in overall print time.

    Also larger layer sizes generally give better layer adhesion.
    slower, larger surface area and fewer layers as well as printing a little hotter - but not that much hotter. remember a larger bead will slump easier and cool slower. So that's why you tend to reduce print speed rather than significantly increasing printing temperature.

    But at the end of the day, it's all down yo whether or not you can easily swap out nozzles.
    It's all about viscosity and material flow.

    Glad the printer's working out - and hope that helps :-)

    what speed are you printing at ?

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