QIDI PLUS4 3D Printer, Max 600mm/s High-Speed Printing, 65℃ Chamber Heat, Fully Auto Leveling, 370°C Direct Extruder with Integrated Nozzle, Support PPS-CF Filaments, Large Print Size 12"x12"x11"

I have previous experience with QIDI printers (X-CF Pro) and their tech support is very good. I started my 3D printing journey with a Taz Lulzbot Mini. So, I have a little knowledge and expectations for my 3d printers at this point.Looking to have the capability to print the newest hottest printing filament, have a heated chamber and gain speed and 3D print size/volume, the QIDI Plus 4 caught my eye.After hours of watching review videos and weighing the pros and cons, I ordered my first QIDI Plus 4. Fully aware that this is a newly released printer, a couple of issues had already been found by early reviewers and QIDI had either updated firmware or provided instructions to make corrections/fixes.My first Plus 4 arrived in about 10 days and I immediately setup the printer and one of the first things that you really must do is download the newest firmware onto the included USB drive, from the QIDITech website, and update the printer's firmware through the touch screen menu, selecting 'Set', 'Check for updates', 'Offline Update'.I have many successful prints and well over 100 hours on the first printer, with various filaments (ASA, ABS-GF, PA12-CF, PLA+). The only filament issue I had, was when unloading/loading between filaments, I selected the incorrect, too low of a temp, for the filament that the printer cut off and was about to extrude out of the drive gears. The lower temp caused the filament stub to hang in the nozzle and drive gears. Two small hex bolts hold the hot-end on the printer head. With the bolts and hot-end removed, it was easy to pull the stub of 'cold' filament down and out of the way and back to loading new filament and printing. Lesson learned ... be sure you select the correct temperature for the nozzle to be plenty hot enough to extrude out the remainder of the old filament stub.One of the first print jobs was the 'Poop Chute', to catch the purge filament that ejects out the back of the printer. Close to a 8 hour print job and I printed in Polymaker PLA Pro. Flawless print quality for this large-ish print. The longest print job so far was 24 and 1/2 hours of some large cable organizing trays. I printed them in PA12-CF, for strengh. Probably overkill, but might hang heavier items in the trays in the future? Again, impeccable print quality.So, with over 100 hours of pretty much trouble-free printing, I continued to watch for more experiences of other new owners. Mostly positive, with a few early adopter issues, as we can expect. I was having so much fun with the Plus 4, that I decided to buy a second one.The second printer came in only about a week. I already knew the new Plus 4 setup routine and took much less time getting up and going the second time around. After updating the firmware to the newest, I attempted to heat the print bed, before running auto bed leveling and input shaping. As soon I select the temp to heat the bead, the printer shut down. Powered the printer back on and repeated the process, with same shut down results.I had already seen some reviews and new owners, with this issue. Some printers are shipped with the power supply switched for 230V-240V operation, even with a sticker beside the power switch, that says, 'The input power of the machine is 100V-130V'. You cannot always believe what you read.Tipping the printer up on the side with the power switch, you can see the red slide switch on the power supply to switch it to 100V-130V operation. No shut downs after make the change. NOTE: My first Plus 4 never had to be switched, so you milage may vary. Just be aware that you might have to toggle the little switch.Just finished the 'Poop Chute' on the second Plus 4, again in just under 8 hours. This time I printed in ABS-GF and same amazing quality of print, just like the first Plus 4.I had looked closely at the Bambu Lab printers, especially with the multi color filament option (AMU). QIDI has announced their own AMU, for the Plus 4 and possibly other recent QIDI models, that should be out in first quarter 2025. I figured I could wait and get familiar with the Plus 4's capabilities and any quirks in the mean time. The speed, heated chamber, print size/volume and ability to print the most extreme heat filaments and already being familiar with QIDI, eased my decision making. Oh, and did I forget to mention price? Seems to be a very good value for the price. Of course time will tell.So, I am very happy, so far, with both printers. My previous interactions with QIDI tech support has always been positive. They have always been easy to work with, for me.

This printer was incredibly well packaged and free of damage or loose parts. It comes in a large and heavy (a bit over 70 pounds) box; having an extra set of hands isn't required, but it will be helpful when getting this printer into place. Checking the back, I noticed that my printer had the upgraded SSR board to fix the issues the original board would have for 110V areas.The setup was straightforward, with most steps displayed on the screen during the first bootup. It may not be quite as simple as getting Bambu printers up and running, but you won't be scratching your head wondering what went wrong. You can connect to your network via LAN or Wi-Fi; using this printer with OrcaSlicer is easy. Plus, the Fluidd UI is a step up for monitoring and adjusting prints compared to Bambu Studio's device tab, aside from some simple speed adjustment presets Bambu offers. At first, I had created a Fluidd account, but I found it caused some odd connection issues, so I just use it without any accounts, and I haven't had the same connection/moonraker issues.The print quality I've experienced is fantastic and rivals my P1S. With its increased hot-end range and heated chamber, this printer feels like a significant upgrade if you plan on printing engineering-grade materials. I've steered clear of Qidi printers in the past due to concerns over QA, and to be frank, I just thought they looked bulky and ugly. This new frame is gorgeous and really makes the printer look much more modern and sophisticated. I had planned on purchasing this printer a few months ago but was put off due to the news of the SSR issue, which now seems resolved. Other than the SSR, it seems this printer was well-designed and produced. The fact that the board was swapped out made me more confident in this printer's longevity and Qidi as a company.The build quality is very nice, maybe not quite as lovely as my Bambu machine, but the printer feels sturdy, doesn't make any rattling sound, and the outer panels sit flush with the machine. I found the door to be very sturdy and has a bit of resistance when opening or closing it. When printing low-temperature materials, this keeps the opened door from swinging about too much or slamming closed. Keeping the top lid and door slightly agape keeps internal temps around 33c. It will go lower if you fully open the door and remove the lid, but that wasn't necessary in my experience. For higher-temperature materials, closing the lid and door helps muffle the already quiet printer during use.I could go on; this really is a quality machine. If you're looking at a P1S or X1C, this could be a capable and more open-source alternative unless you need multi-material printing. There's supposedly a Qidi AMS clone on the horizon, but it seems pretty unknown at the moment. With Klipper under the hood, you may even be able to get an open-source MMU like the Enraged Rabbit Carrot Feeder to play with the Qidi Plus 4 (although no one has tried this yet, to my knowledge). I was mainly focused on printing more challenging materials, and my P1S already has an AMS, so this wasn't a concern for me.