Overall, excellent. I needed help assembling it but it really wasn’t too complicated.
The finished models are beautiful.
One difficulty: if you cancel the print the extruded does not automatically lift.
Overall, great

This is not for first time 3d printer"s. If you have many hours on a 3d printer machines, then you could consider this machine. Instructions are very poor. Construction for the main parts is great, but where the extruder attaches to the X beam is very weak and the extruder can move/flex, also the Y axis is poorly design and has lots of slop in it, bed is not very stable It took a lot of work to get the z axis to move with both motors working together. Binding on the z threaded screw took time to get it to work. Leveling the bed with the auto leveling is very difficult, took many hours to get it right and instructions are no help. Trial and error with the setting of the prox switch is the only way to get it to work. This design is a good start, but much work is needed on the y axis and extruder mount. Software is also not easy and is not like any of other Monoprice 3D printers that I own.

The printer arrived with the the packaging & printer in good condition. After attempting to print a test print, that covered the entire print area, I discovered at least two assembly/build issues (build issues from the manufacture). The pulley for the bed front to back belt is at an angle - the belt rubs on the edge of the pulley. This is obvious when looking the it from above. This should have been caught at assembly time by the manufacturer. The second issue is the two rails that the print bed moves front to back on. These are not parallel - they are 4-5mm different in the rear vs. the front. This causes wobble in the print bed at the extreme range of its travel. I opened a support case with Monoprice. I provided videos & photos. They did not understand, and recommended tightening the wheel assemblies that hold the bed on the rails. This manufacturing issue should have been caught in production and not shipped this way.

After owning the Monoprice Ulitmate (Wanhao D6) for almost a year I decided I wanted a CR10 clone for larger prints. I researched several CR10 clones and decided on the Monoprice Maker Pro Mk. 1.

The main reasons for choosing the Mk. 1 over other large printers were:
* Dual z-axis standard
* Direct drive extruder
* 24V heated bed (faster heat times but still safer LV)
* Integrated electronics into base (smaller and less cluttered footprint)
* Touch screen
* Self leveling
* Magnetic build surface
* Auto resume after power interruption
* Full metal hot end is included

Package received on time and in good order. The unit is fairly straight forward to assemble and went together in about 30 minutes. The frame is built from what appears to be 15 series 8020 aluminum extrusion. I've built several DIY CNC routers from the same stuff. I will be designing and adding gantry supports to stabilize things on taller prints. Wanhao has them available but I can make them fairly easily and for less money.

First couple prints with PLA went fine but I then began to have issues. The x-axis beam began to sag on the motor side. Realigned everything and tightened up the adjustments and everything has been holding well since. Also, had a glitch were the autolevel was thrown off for some reason and the nozzle burned several grooves and holes into the brand new magnetic build sheet. Literally, I went from completing a great print and starting a new one off of the SD card w/o any power down or anything and the z-axis buried the nozzle and drug it across the bed creating a nice canal through the brand new build sheet.. I haven't spoken to MP about replacing but maybe they will send me one. Since then I went and found a video from Wanhao about resetting the sensor height to fix the problem.

That aside, I'm about a week in and have printed several things including a large 48 hour print. The machine has held true and produced great prints with PLA. I have some ABS and TPU but haven't yet attempted any prints with them.

All in all, I'm very pleased with the Mk. 1 and feel like the price is decent considering the upgrades that it includes over other clones in the marketplace. I haven't yet tested a lot of the features of the machine but the initial impression is very good and the print quality has exceeded my expectations.

MonoPrice has no clue on how Auto leveling works and there instructions suck. the instructions have you manually leveling the X axis rail by putting a small level on it and leveling it by turning nuts on Z axis. Then it has you run the Auto level and the auto level runs through the process. Then when its done you don't know if it did anything. They want you to believe it is doing something but how do you know it is doing any thing. Could be that you just manually leveled. I don't trust that auto leveling and I don't want to waste my time and material so I check the leveling. If you want to know if it leveled correctly after you use the level on the X axis rail make sure to put the level on the bed and make sure the bed is leveled also. The bed doesn't move so they would have you believe the program will compensate and line up to the bed while it prints your model. That is fare fetch and your going to waste material if you believe that. There is a reason why this Printer drop from $599.99 to $449.99. Printer has potential I think I will start you tubes videos to help people that buy from MonoPrice
Just keep eye out for SolidStart