Crazy3DPrint CZ-300 Review: A Crazy Big 3D Printer

A sleek printer for large scale printing.
Ash Ash (362)
45 minutes
Our rating: 4.25/5

The Crazy3DPrint CZ-300 is a very large 3D printer with a bed volume size of 300 x 300 x 300mm. When everything is working just right, it can create some really detailed final prints.

My experience with the company has been positive. Everyone I've spoken to has been incredibly helpful when troubleshooting the printer. Be sure to register your device when it comes in, the support is invaluable.

The biggest challenge I've faced with the CZ-300 has been stair-stepping in prints along the Y-Axis. What I thought was a belt tension issue ended up as a Cura problem. This printer works best with Cura 4.0.0. Be sure not to slice with a newer version when printing on the CZ-300.


  • Large print bed volume
  • Clean frame design
  • Easy to assemble
  • Heated bed


  • Prints must be sliced with Cura 4.0.0
  • Cable management


Attribute CZ-300
Build volume 300 x 300 x 300mm
Print Materials PLA/ABS
Filament diameter 1.75mm
Nozzle diameter 0.4mm
Extruder type Bowden
Heated bed Yes
Weight 32 lbs
Dimensions 21.0 x 19.8 x 22.9 in
Price $349 on Amazon

Ideal for:

  • Intermediate users
  • Advanced users
Crazy3DPrint CZ-300 3D printerCrazy3DPrint CZ-300 3D printer ×1

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Unboxing CZ-300

The CZ-300 arrived very well packaged. The printer is large, so you expect a decent sized box. The contents are packed in styrofoam and sealed in plastic to prevent moisture damage. The contents are easily removed from the box by pulling the plastic straps.

You'll receive a list of parts in the included instruction manual. You can expect:

  • CZ-300 printer components
  • Instructions
  • 1 Warranty card
  • 1 Screwdriver
  • Additional accessories (zip ties, etc)
CZ-300 Assembly

Set aside some time to assemble the CZ-300, at least 30 minutes. You should receive both a set of instructions and a warranty card. The instructions are printed on standard printer paper and stapled into a packet. Some of the pictures can be difficult to make out, making some steps harder to follow. You can find the same instructions on the support page under Download and Document.

You will need an account to access the pdf version—but it might be worth the effort to see the images on your screen. Registering your printer with the website makes it easier to request technical support in the future.

Belt assembly

The Z-Axis uses two worm rods that rotate with a shared belt. This belt is manually installed at the top of the printer. Be mindful of cable placement when attaching this belt and other components to the top of the frame. It’s easy to cross a few critical cables that can catch when printing.

Bed leveling

I had an issue when leveling the bed on the CZ-300. According to the technical team, this printer auto-levels the bed using built-in sensors. Despite any auto-leveling, the Z-Axis issue remained until I completely removed all of the bed screws to adjust the height.

CZ-300 3D Printer

The frame arrives partially assembled—it's made of metal and notably sturdy. Components, like the filament holder, can be installed almost anywhere because of the rail shape. Just be sure the new location doesn't block any of the bed movement. I didn't observe any wobbling or shaking while prints were in progress.

The main box is also made of metal. The power supply takes up a lot of space and the unit itself is on the chunky side. The cables that tether it to the printer are short, so it can be tricky to find a good position for the LCD interface.

CZ-300 Motion System

I had no issues from the X-Axis and Y-Axis motion systems. Those work flawlessly and haven’t required any special calibration, although it is possible to make adjustments to them with the included screwdriver.

CZ-300 Footprint

The printer takes up a decent amount of space, but that's only because the build volume is so big! The frame isn't clunky at all and leans on the thin side. I really like the frame design and it looks nice in a workspace. The main printer, not including the power/LCD box, has a total size of 21.0 x 19.8 x 22.9in.

Your biggest challenge will be finding a place for the main box—which houses the motherboard, LCD interface, and power supply. It's a little awkward in shape and has to sit close to the printer because the cables provided are so short.

CZ-300 Heated Bed

The bed that ships with the CZ-300 is glass, which works perfectly with the heated bed system. The heat dispersion was consistent across the bottom layer of my test prints. It heats when starting a new print and automatically begins cooling when a print has been canceled or completed.

The tech team recommended covering the glass bed with scotch tape to help prints adhere to the surface. So far this has proved to be an effective method.

CZ-300 Bowden Extruder

The CZ-300 features a bowden extrusion system with the extruder mounted to the top of the frame. I really like this design because it's unique and keeps filament out of the way. The filament is fed up through the bottom of the extruder which is then guided towards the nozzle.

The default nozzle is made of copper and can be heated to a temperature of 260°C. This opens your printing ability to a wide range of filaments. The printer also arrives with a couple of replacement nozzles.

CZ-300 LCD Screen Interface

The printer is controlled through this main box. It contains the motherboard, power supply, and LCD interface. The CZ-300 runs Marlin, so it should be familiar to anyone who's used a printer with Marlin. It's a typical setup and the menu is easy to navigate.

The interface is controlled using a rotary button on the front of the box. You can select files to print and make manual adjustments to specific settings at the push and twist of a button.

When a print has completed or been canceled, both the nozzle and bed will automatically cool.

When canceling a print, the nozzle will NOT move away from the object. This means you will have to either move the nozzle with the rotary button/LCD interface or physically move the nozzle. It can take time before the nozzle has completely cooled, leaving it in place can cause filament to melt and harden. This can be hazardous and is guaranteed to at least make a mess.

CZ-300 Bed Volume

There is an amazing amount of print space on this device. I really appreciate the large build size—the bed volume measures in at 300 x 300 x 300mm. You can really take advantage of it for some large scale prints.

CZ-300 Filament

The CZ-300 supports many standard types of filament. The nozzle can be heated to 260°C, which really opens the door to filament options. You can expect compatibility with common filaments like:

  • PLA
  • PETG
  • ABS

The test prints you see in this review are completed using PLA—both the provided sample from Crazy3DPrint and a roll of AmazonBasics PLA.

CZ-300 Loading Prints

Prints are loaded via SD card, like most standard 3D printers. The SD card slot is located on the left side of the main box. The CZ-300 comes with a 1GB SD card that can be reused for loading prints. Gcode files need to be sliced using Cura 4.0.0.

CZ-300 Printed Objects

When the bed is properly leveled, you can really get some fine prints. The layers are smooth and any jittering can be easily adjusted by tightening any loose bolts on the motion system. The nozzle has a fan that can be manually adjusted or set when slicing prints to optimize your layer adhesion. Overall, the print quality of the CZ-300 is nice—it just takes a little bit of time to optimize the settings.

CZ-300 Printed Object

Here’s a closer look at what this printer can do.

CZ-300 3D Printer

When everything is dialed in just right, this printer has spectacular results. My biggest concern has been the Y-axis stair-stepping issue.

I really like the design of the printer itself, the frame looks sleek, clean, and unobtrusive. The cable management is holding back the versatility of this printer, making it hard to place everything together in a workspace. The box simply sits too close to the printer. It would be more convenient if the cables had a little more leeway.

For the price, it’s a decent printer. It’s hard to recommend it to beginners. But for an experienced 3D printing hobbyist, this is a flexible machine with nice results.

Where to buy

You can find the CZ-300 on Amazon.

A large scale review for a large scale printer!
Ash Ash (362)

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