Only buy one of these if your looking for a project
First off, I'm only giving this a 3 star review because I knew many of the issues that there are with this printer, so I knew I was buying a project that would need upgrades and repairs, but I got it fairly cheap as an open box deal so I thought it was worth it to me. I've had a Monoprice Maker Select for 3+ years and it has been a great printer, minus needing to ad a MOSFET board for the heat bed, but Monoprice made a mistake by putting their name on the Wanhao D9 300, and they should be ashamed of it! When I got the opened box printer there was a hand written note on it that the auto bed leveling wouldn't work. After assembling it I found that the left Z stepper motor wouldn't go up because the per-assembled base frame was extremely out of sqaure, no bid deal so I squared up the entire printer as best as possible and got it working. I was getting decent prints at this time, but the auto leveling was very buggy, sometimes it would make it through the auto leveling process, other times it would gut stuck on a "It is in progress, please wait" so you have to power off the printer and start over. Also after about 3 weeks i had the power failure recovery module stop working so I had to open up the printer and un-plug that. After buying a new power failure recovery module, and the Wanhao D9 MK2 upgrade kit I now have the printer working very well, but as is out of the box from Monoprice its a major disapointment and will make me think twice of not only buying another Monoprice printer, but any Monoprice items as it doesn't seem they put much screening into the items they re-brand.
Monoprice MP Maker Pro MK. 1 with Wanhao D9 300 MK 2 upgrade kit
I bought an open box item. The auto level sensor had to be readjusted as the extraterrestrial tamed into the build plate as I ran the auto level. So far so good. I have printed a benchy and a few other things. The print quality has been pretty good so far, but not a upgrade from my smaller monoprice printer. The big build plate is the main improvement here. The add and remove filament works well. I have always had to manually feed so this is an improvement. The auto level seems to work now and the magnetic build plate is nice, the the adhesions does not seem to be as good as the glass plate on my smaller printer.
There was no card provided for auto level so we improvised with a piece of card stock flash card. And when the device started to rise for auto level the right side was sticking and it became severely off level and started to bind up. Not sure how to fix this?
I got this printer as an open box deal. One of the Allen wrenches was missing and there were a few extra screws loose in the box. The alignment of the major components was slightly off so I fully disassembled and reassembled the printer. The z-axis need quite a bit of adjustment to get right (left stepper was catching).
Recieved printer just in time for christmas. Putting it together was simple following the monoprice youtube instruction video. the bed plate rails was bent and off the tracks. had to take apart and reposition the rubber on the bearings. After that it printed out the test butterfly. The magnetic pad had burn holes in it when it was recieved.
It's definitely not a beginner printer. Poorly written documentation, and it didn't help that the bearings were pressed out of the rollers right out of the box. That being said it's a decent project to replace the bed rails with linear ones. Also spent a whole role of filament printing improved parts to make this thing run like it should. By this I mean hand upgrade it to a v2. Large build volume that I hope to get to test out soon. If you are planning on buying this you should check out Bleugh parts on thingiverse and for anyone who doesn't know this is a re branded Wanhao D9 with a 300 bed.
This is a great 3d printer, it's easy to setup and get running right out of the box. Print quality is great and the extra larga size gives you the options to make large 3D prints without having to cut your object into smaller parts. The MK 10 extruder works great and is better that the "bowen type" used on other Monoprice large 3D printers.
See photos. Printer arrived with the bed not level, two of the bearings for the wheels had been pushed out of the wheels. Looked like the printer had been dropped or stepped on, but the box it came in did not look damaged. I eventually got the printer together and pressed the bearings back into their wheels. After assembling the printer the extruder would not jog, the cable for it had come loose from the controller board. And to add insult to injury the day after I purchased the printer the price for the new non-open-box printer was dropped to the same price as the open box unit ($399.99 at time of review)