We present one of the best DIY printer models on the market… the BLV mgn Cube.
As its name gives us clues, it is a printer with a chassis in “cube” format with CoreXY cinematics using linear guides.
In our case, we have used the complete Fysetc kit that includes everything to assemble the printer: chassis, kinematics, screws, electronics, sensors, enclosure, etc …
The BLV mgn Cube was born as part of a project by Ben Levi to assemble a printer of this format with a rigid structure with the front open to have easy access to the printing area, which was simple to build on the other hand and completely open source to allow it to adapt to our needs and that had a contained cost.
You can find all the information on the website of the project itself with everything you need to build yours, in any case, and given the complexity and number of components, it is usually more interesting to get one of the DIY kits like Fysetc.
https://www.blvprojects.com/blv-mgn-cube-3d-printer
You can also access the 3D design of the machine which is great to get an idea of the sensational design of this printer.
https://myhub.autodesk360.com/ue2bf7842/g/shares/SHabee1QT1a327cf2b7a13d3988f9c72527c
As we always do, we leave you some links where you can buy the FYSETC kit of this printer, as well as some components.
If you use them, the price of the product will be the same as if you access them regularly, but 3DWork will have a small commission. Something that will help us support the project and be able to offer you this type of article.
You can also use our product search engine for 3D printing developed by 3DWork, where with a single search you will be shown prices from different marketplaces (Amazon, Aliexpress, Banggood, etc.)
Fysetc has done an exceptional job in this kit which includes everything you need except for the few printed parts depending on whether we choose the metal parts kit option.
The components came perfectly packaged and labeled in detail such as screws, engines, etc.
Perhaps we would have liked for future revisions of the kit the aluminum profiles had some kind of label that facilitates identification in a simpler way.
Below we will go into detail about some of the components of the kit and a link to the 3D design.
The kit includes all the necessary profiles to mount our BLV which are protected in an adequate way and as we discussed at the beginning we would have liked these to be labeled to identify them more quickly.
One of the peculiarities of the Fysetc kit is the use of profiles with “blind joints” allowing a good anchoring of all the pieces and saving us probably 80% of the time to assemble the chassis.
In addition to the profiles, all the necessary screws are included and completely labeled, interesting that some that are not in the official BOM are included.
In our case, the kit includes an excellent clone Duet 2 Wifi 1.04 of the brand Fysetc everything and there are more current versions this is still one of the most advisable and reliable machines that use Reprap firmware.
The kit includes accessories such as USB cable, cables, connectors, SD with a basic FW, jumpers, etc …
It also includes a great screen of 5 “PanelDue v3 which is not the standard of the BOM and that we can find in the link of STLs or Thingiverse the stl to adapt this screen.
In the event that we select a kit without electronics, we advise you to use the Fysetc Spider specially designed for this type of printer and compatible with Klipper and Marlin.
Included in the kit we can find a BMG clone of great quality as it could not be otherwise of the Fysetc brand which includes everything necessary to be assembled.
It also includes a pre-assembled V6 clone as well as a spare bar and nozzle and an HT-NTC100K thermistor and a 24v and 40W heater plus PTFE for installation.
The 5 motors included in the kit are perfectly protected in FOAM… Another important thing to mention is again the labeling of both the motors and the connection cables, something that especially in machines type CoreXY or of this complexity is very appreciated if it is our first machine of this type.
Indicate that the engines included do not seem the same as those indicated in the official BOM but their characteristics and how they have behaved in the different kits that we have tested their behavior was correct and without problems.
Another great success, which we have fallen in love with, of this kit is the inclusion of rods with black Teflon that look especially good in this machine along with POM TR8 spindles that do not need lubrication, withstand heat well and work in a smooth and noise-free way.
One of the points that pleasantly surprised us is the “beast” of a source included about 2Kg of weight, a MeanWell SE-600-24 that with a working voltage of 24V, and a supported current of 25A gives us 600W of power!!!
In addition to having this great source, you include all the necessary wiring, buttons, and an SSR.
Fysetc has thought of everything with this kit including a leveling system compatible with any printing surface. This Bltouch-style clone sensor includes all the necessary wiring for installation.
The kit includes a 310×310 aluminum heated bed with an integrated NTC 100K thermistor and its crimped silicone cables for easy installation.
Along with the bed, we can find a Buildtak glass with a layer of nylon on top to ensure a surface as linear as possible. In our case, we chose to use PEI since it is a surface that we like more for our printers.
In addition, aluminum foam is included to protect our bed from thermal leaks, something that is greatly appreciated since it allows an even distribution of heat in addition to protecting from leaks and thus avoiding greater wear due to temperature adjustments.
Also, and as something we had not seen in other kits, leveling wheels of the Creality brand are included as well as rigid springs that are perfect for manual adjustment of any deviation.
Although the guides included in the kit do not seem to be of a renowned brand such as HIWIN, the guides have excellent quality in their machining producing smooth movements in addition to coming perfectly protected in FOAM.
It is advisable in this type of linear rail to clean and grease the skid before installing it.
To give an exclusive touch to your kit Fysetc has included cut and perforated ACP panels for the printer enclosure.
They have also included foams for sound insulation along with double-sided tapes for installation.
On the other hand, they have also included a roll of vinyl emulating carbon fiber along with a spatula for installation on the panels and give it a pro finish.
Included in the kit we find another extra that gives a touch of distinction to our machine with three Neopixel that will help us see the status of our printer. In this case, Fysetc has included the control electronics and wiring so that the installation is child’s play.
In addition to the inclusion of Neopixel rings, the kit includes 4 strips of white 24v LEDs for use as the lighting of the printing area.
Within the STL of Fysetc as BLV you can include the diffusers for installation as well as the connection scheme of these with one of the switches included.
The kit includes all the fans necessary for the commissioning of the printer with the wiring adapted for the Duet 2 Wifi electronics with 3 4010 fans and a 5015.
A comment that although we did not know the brand of these fans we have found them very correct.
In the case of not wanting to mount Sensorless, we can choose to use the endstops included in the kit, a note, it is advisable to use the STL of Fysetc since they improved this part.
We have commented again and again this Fysetc BLV kit includes everything you need to assemble this great machine:
Now that we made a complete review of all the contents of the kit could not miss the tools to assemble it including hexagonal keys of different sizes and cutting pliers of excellent quality.
Before proceeding to assemble the kit it is advisable to have some useful links at hand:
Fysetc could not make it easier with the inclusion of some videos with the detail of the assembly of the kit:
Once our printer is assembled, we will begin the start-up by performing the initial ignition. As we have already mentioned, this kit comes with everything ready and we have the firmware versions both in our Duet 2 Wifi and in our PanelDue 5i screen.
The first step after verifying that our screen turns on and has a connection with our printer will be the connection to our wifi by performing the following steps from the PanelDue itself although we can do it by connecting our Duet 2 Wifi by cable and using a terminal client such as Pronterface / Printrun:
Although the kit is based on a Duet and RRF board, the latter has never been one of our favorite firmware. Its “industrial” orientation, relative complexity in its configuration, and the slowness in the transfer for example of gcodes made us think about its migration to Klipper which is one of the firmware lately very fashionable and that is a round solution for this machine.
You can find more information about what Klipper is and how it works here as well as some interesting resources/guides about it. In order to perform this migration we will need:
Klipper mainly has 2 parts:
We are not going to go into the detail of the installation of Klipper since you can find here an installation guide we will only leave you the “printer.cfg” with a base configuration for a BLV that we can modify to our liking.
Once we have installed our Klipper and have access to our brand-new UI the next step will be the installation of the Klipper firmware in our Duet2 Wifi.
cd klipper
make clean
make menuconfig
// - Micro-Controller > SAM3/SAM4 (Due and Duet)
// - Processor > SAM4e8e (Duet WiFi/Eth)
// - Communication Interface > USB
make
Once generated, we will install it on the board following these steps:
If the installation process fails you can leave the board in bootloader mode so the ideal is to disconnect the board and redetect the “serial id” in case it changed.
[mcu]
serial: /dev/serial/by-id/usb-Klipper_sam4e8e_xxxxxxxxxxxxxxxxxxxxxxxxxx-if00
Here are some interesting Klipper settings for our BLV:
This BLV mgn Cube kit from Fysetc is very complete, with a very well-thought-out machine design and an excellent alternative to other similar DIY models. The assembly process thanks to the documentation/videos as well as the contents of the kit has been relatively simple considering the type of machine.
On the other hand, in the part of the commissioning of the electronics if you do not have some experience with RRF / Duet systems it can end up being a bit convoluted. The move from RRF to Klipper gives fresh air and will improve the experience in the use and operation of the machine.
Related to the Duet electronics that carry although it is an excellent electronics we believe that it is somewhat outdated and perhaps focused more on other more “industrial” machines, the use of the excellent Fysetc Spider would have been a perfect companion for this machine.
Also related again to electronics and its power supply emphasize that they can generate some noise so if it is an important aspect, and without it being something scandalous in excess, the change of electronics and change of the fan in the power supply help to silence this part enormously.
Otherwise, we have a very robust chassis and kinematics, well designed and that behaves exceptionally in any situation being an excellent idea to use triple Z to improve it even more.
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I wrote all the instructions and guides for Ben's printers. I also maintain all the firmware configs. If you're going to steal my work and claim it as your own I'd appreciate you at least give me the credit.
Hi David,
We do not steal anything we follow the different guides and instructions from different sources and adding the links to some of them when required no one says was our invention.
We, as other users really appreciate your efforts as the others who contributed to make possible build those machines.
Original guide was create at 2022 March but unfortunately translated to English last 2022 November.
Any problem to add any link or recognition to the guide if you think appropriate.