uBuild-3D MR BOT 280 User manual

Quick Start Guide
UBUILD-3D
MR BOT 280

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Preparing your printer
Opening the box
The uBuild-3D Mr Bot 280 printer is very well packaged in a five-card carton and
foam-protected polyethylene.
Open the box and remove the protective cardboard with polyethylene foam.
Lift the printer with your hands as shown below.
Setting up the printer
After removing the packaging, to operate your printer you only need two steps,
a) assembling the LCD display, and b) installing the spool holder. Your printer
settings are entirely based on the relevant function menu.

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A. Assembly of the LCD display
What you will need for the assembly:
1. Allen key 2mm
2. Allen key 2,5mm
3. LCD rear panel 1x
4. LCD display (pre-assembled) 1x
5. Rectangular sheet metal
6. M3x6mm button head screws 3x
7. M4x6mm button head screws 3x
8. M3x6mm countersunk screws

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Step 1
Locate the holes on the LCD rear panel
(5) before you proceed to screw the
rectangular sheet metal.
Step 2
With the M3x6mm half-rounded head
screws (2), screw the LCD’s rear panel
(5) with the rectangular sheet metal.
Step 3
Locate where to attach the sub-
assembly under the printer and screw it
in place with the M4x6mm half-
rounded head screws, as shown in the
photo.

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Step 4
Your semi-assembled printer should
look like in the photo.
Step 5
Connect the numbered ribbon cables
to the corresponding numbered plugs
on the back of the LCD display.
Step 6
Screw the pre-assembled part of the
LCD display to the printer's sub-
assembly with the three M3x6mm
screws (4).

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B. Mounting the spool holder and teflon tube brackets
What you will need for the assembly:
1. Teflon tube bracket 1x
2. Teflon tube bracket with pneumatic connector 1x
3. Teflon tube 1x
4. Allen key 2,5mm
5. M4x6mm button head screws 4x

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Step 1
With the M4x6mm half-rounded head
screws, screw the teflon tube brackets
to the right of the printer. The bracket
with the pneumatic connector goes to
the lower position (see circle).
Step 2
Pass the tube from the top bracket and
slide it down.
Step 3
Push it into the pneumatic connector as
far as it goes.

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Step 4
Connect the other end of the tube to
the extruder's pneumatic connector.
Step 5
Mount the spool holder. First diagonal
and up, as in the photo, so the top
bracket of the spool holder passes from
the center hole, and then slide down so
the two little brackets attach with the
two rectangular holes.

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Nozzle and print surface adjustment
After the assembly of the LCD display and the placement of the spool holder,
you need to adjust the correct distance between the nozzle and the printing
surface.
What you will need:
1. Calibration sheet 1x
Note:
The first time you will use the
calibration sheet, remember to fold it
up at the dotted lines. This way it will
be easier to move it back and forth
with your fingers.

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Step 1
Connect the power cord to the printer
and then to the wall outlet. Start the
printer with the "POWER" button on the
left of the printer and wait until this
image menu appears.
Step 2
To access the menu, press the LCD’s
knob and turn clockwise or
counterclockwise.
Step 3
Access in the basic menu you will find
the "Calibration" downwards. Select it.
Select the "Yes" command and then the printer setup program will start. When
the print head completes its movements and goes to the center of the print
surface, you will need to take some steps to complete this section.

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•Place the "Calibration sheet" included in the package between the nozzle
and the print surface.
•Turn the LCD’s knob. Counterclockwise the head descends and clockwise
rises.
•At the same time, slightly move the "Calibration sheet" back and forth until
you feel a slight resistance as the paper is being pressed by the nozzle.
•The properly adjusted distance between the nozzle and the print surface is
when you feel a slight friction of the nozzle pressing the "Calibration sheet".
•When you select the appropriate distance, press the LCD’s knob to finish
the calibration process.
The printer is ready for use!
First print
The first step you need to do is to make sure the glass is clean, and then load the
printer with the filament.
Step 1
Before placing the filament spool on
the side of the printer, cut with a
scissors or with a pliers diagonally the
filament.

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Step 2
Then put the spool in place and pass
the filament from the teflon tube until it
finds a strong resistance.
Press the button to go to the main menu, select "Print" or "Quick settings", then
"Change filament", "Load" and wait for the temperature to reach the desired
level. With the continuous sound, after the temperature reached the desired
level, push the material toward the teflon tube so that the motor can snap it
more easily, and at the same time press the LCD’s knob. Wait a few seconds
until you see some of the material coming out of the nozzle. Press the knob once
more to stop the material from coming out.
Before you start printing, preheat the print surface for three to four minutes. In
the main menu, select "Preheat", then "Preheat PLA / PHA" and "Preheat bed".
Now you are ready for your first print. In the main menu, select "Print" and then
"Print from SD". Choose a ready-to-print file, and start.
Have a nice print !!!