T320 3D Printer, Large Print Size 320x320x320mm, Heat Bed, 2-in-1 Dual Extruder, Auto Level, Filament Run-Out Sensor, Easy Assembly, 40g PLA Filament Sample

Perhaps the experience of others may be different, but mine was HIGHLY disappointing:Unfortunately, I'm returning this printer. Some of the more obvious reasons:When moving the Y axis manually:, between 20 and 90 mm, the Z axis moves down in direct correlation to the Y forward, and up in direct correlation to Y backward. If the Z-Axis is already low enough, this would cause a collision with the nozzle and the print bed.At various points, while manually controlling the machine, indistinguishable characters scroll across the screen. The correct display does return, but there is no indication of what the message is, while the indistinguishable characters are scrolling. For all I know, this could be an error/warning message. Since it doesn't display anything meaningful (looks like MS "Wingdings" font), there is no way to discern what might be occurring.Printing with a PEI sheet does not seem to allow for "auto" levelling...The Z-Axis end stop appears to be far too low, and the user has to "shim" the end stop mount. I found that a pair of mainboard offsets (8mm) work perfectly, in this regard. Unfortunately, execution of this is still too poor to even attempt any further troubleshooting.Bed will not heat up; nozzle will not heat up. Attempting this manually renders knob unresponsive - manual power cycle is required, in order to return responsiveness to the machine..Attempting "Preheat PLA" yields no response, at all.I am suspecting a bad controller board, but I can't be certain. Uncertainty makes me unwilling to trust this product to leave running, unattended while I am at work.The machine arrived well-packaged, but the bed arrived scuffed in several places. I buffed them to smoothness, as I use a PEI sheet for my prints, anyway. However, the gloss finish on the print plate was marred, out of the box.Even when not used, the X-axis motor heats up; uncomfortable to the touch. I have not even reached the point of attempting to print anything, yet, as the machine has yet to work in any manner that can be reasonably expected.The vertical spec is NOT 320mm, as advertized on Amazon. The Z-Axis motor begins to bind, at somewhere between 280-290mm, and raising the X-carriage to its full height would bend/crimp the PTFE tube. This is false advertising, at best.There is only one sensor connection for filament run-out, though there are two extruders. It is pointless to detect filament run-out on only one extruder.This is my second attempt with a Pxmalion product and I'm afraid it will be my last. Pxmalion has some very good ideas, but they can't seem to implement them with anything approaching a usable product. Very unfortunate.

This is a good budget printer if you are looking to get into 3d printing knowing you are going to want the bigger dimensions of the typical I3 design. The build process for this printer is simple and fast and took me under 2 hours. The base contains the controller board, Power supply and external MOSFET. Most of it was pre-wired minus the stepper motors, hot end and heated bed I had to plug in to the well labeled controller board. Its is a pretty slick design that hides the electronic components better than most 3d printers and gives a clean look. The green plastic parts holding the printer together are injection molded which are stronger and straighter than 3d printed parts. For the dual extrusion it has a 2 extruder motor 1 nozzle set up which looks like it saves a lot of weight off of the X axis assembly which will help with print accuracy. I like the aluminum build plate and the auto bed leveling works good. Customer service with the product has been great and quick to help me with any issues I have had and have updated the firmware since release.You will need a few things for it such as belt tensioners and maybe a few extra screws, a filament spool holder, as well as your choice of bed adhesion material. It came with a roll of masking tape which works okay to start with PLA. These and all typical 3d printer tools. Also worth noting is that when you raise the print head to 260mm the PTFE tube gets bent on the top plate. To print to this height would take over 24 hours and wont affect everyone but is worth noting.

This is not a great buy. I have been adding upgrades since I put the printer together. The filament feeder should be spring loaded but has a very cheap one installed.The printer should be fed from the top down not from the back.The display fades on and off.Finding a decent .Hex file to load is almost impossible. You have to learn how to use Marlin.