TRONXY X3A User manual

Tronxy X3A
Print Bed Calibration

READ ALL THE WAY THROUGH
•Read these instructions all the way through
before starting. More than once helps.
•Take your time, don’t rush this
•If you notice something isn’t right fix it before
moving on
•Patience!

Print Bed (PB) leveling
•After the frame has been built and the “smoke
test” has been completed it is time to level the
print bed
•The printer must be able to be controlled using
the keypad to do this
•Depending on SW version, the HOME ALL, AUTO
HOME means the same thing.
•After leveling, the Z gap is set to final height
•When the Z gap is correct it is then time for your
test print
Week 2

PB Leveling Step 1
•Step 1: Turn off printer power
•Place the printer on a sturdy solid surface (table)
•Ensure the frame is level. Use a bubble or digital
level to check it.
•Use strips of paper to get the frame as level as
you can in BOTH the X and Y axis
•See next slide for more info
Week 2

Bubble Level Use
Week 2
Bracket
Bubble/Digital
level positions
#2 X Beam
#3 X-Axis Print Bed
#1 X-Axis Frame

PB Level Step 2
•Step 2: Using a bubble or digital level we will now level the
X-axis beam.
•Turn Z drive shafts until level shows the same as the frame
•Turn both of the Z-axis screw shafts at the same time so
that the print nozzle is about 6mm (1/4”) above the PB. Re-
check X-axis beam level
•Tighten the Z-axis carriages to the X-axis beam (4 screws
accessed from the back of the printer)
Week 2

PB Level Step 3
•Step 3: With the bubble level on the print bed,
adjust the knurled nut adjusters so that the screw
thread is flush with the bottom of the nut and the
bed is level in the X & Y axis. Take your time and
recheck the level as each adjustment affects the
other.
•If the PB is not leveling, check the aluminum
angle brackets to make sure they are seated well.
Some of the brackets may still have “nubs” that
were not ground all of the way off.
Week 2

PB Level Step 4
•Step 4: Turn on the printer
•Command HOME ALL / AUTO HOME
•The print nozzle moves to the left and then stops
•The PB moves to the back and then stops
•As soon as the Z axis starts to move down, place a
metal object under the blue inductive sensor. The
light should come on and the motion should stop.
•The printer might start the AUTO HOME over
again. If it does, turn power off, wait about 10
seconds and then back on.
Week 2

Step 4 cont.
•Disable steppers and move the nozzle to the
middle of the print bed
•Rotate the Z-axis screw drives (both at the
same time) until the print nozzle is ~.004” gap.
•Recheck X-axis beam level.
•Carefully adjust the height of the Z axis sensor
until the sensor light just comes on.
•Be patient, this is not easy to get right
Week 2

PB Level Step 5
•Step 5: If not already done, Disable the
steppers
•Manually move the print nozzle and PB so that
the nozzle is close to the left front corner of
the PB. Re-measure the Z gap and adjust that
corner adjustment nut for .004” gap
•See next slide for better detail
Week 2

PB Level Step 6
•Step 6: Carefully push the nozzle assembly to
the opposite corner until the nozzle is near
the corner of the PB
•Verify the Z gap and adjust as necessary
Week 2

PB Level Step 7
•Step 7: Repeat the process for the remaining
corners
•Go back and recheck all corners until each and
every corner Z gap is .004”
•Take your time and get this right!
Week 2

PB Level Step 8
•Step 8: Pre-heat for PLA and let the printer
come all the way up to temperature
•Now re-check the Z gap at all four corners and
adjust as necessary
•The hot level will need to be checked often
until your printer has settled in
•Moving the printer and room temperature
changes can affect the Z gap.
Week 2

Step 9-1 PB Z Gap Setting
•1. Pre-Heat PLA 1 if not already done and wait for
the printer to reach temperature
•2. Operate keypad enter control->Motion->Z
Offset->confirm(fig 7), set Z offset to 0.5mm
•3. Operate keypad enter control->Store memory
to save the setting (fig 9).
•4. Operate keypad enter control->Load memory
to update the setting (fig 10).
•5. See next slide for more detail
Week 2

Step 9-1 cont.
Week 2

Step 9-2 Z-axis Sensor
•Now comes the “fun” part……..
•You must be ready to kill power if the print
nozzle crashes into the PB. Keep your finger
on the switch until you see that the Z-axis
sensor has triggered properly.
•Command a “HOME ALL” with the keypad, X
will go first, then Y and then Z. Be ready to kill
power if the Z-axis crashes into the bed
Week 2

Step 9-3 Z Gap Adjustment.
•If the Z-axis successfully stopped and you did not
have to kill power, check the Z gap for .004”.
•If the Z gap is too large, carefully move the sensor
UP ▲. See next slide for what to adjust.
•If the Z gap is too small, carefully move the
sensor Down ▼.
•Remember that you are adjusting thousand's of
an inch so loosen the screws just a little and
move the sensor by wiggling it in the direction it
needs to go.
•Repeat the process until you have a ~.004” Z gap.
Week 2

Step 9-3 cont. Adjusting the Sensor
Week 2
Sensor height adjustment Sensor and fan cover height adjustment

Step 10 Test Print
•Step 10: Printing the test print
•Clean the PB with a paper towel moistened with denatured alcohol or
glass cleaner
•Turn on printer and pre-heat PLA and wait until the printer has reached
temp
•Load the filament into the extruder
–Cut the end of the filament at a 45° angle
–Insert the filament into the back of the extruder
–Press the release lever, push and rotate the filament until it lines up with the
exit hole
–Continue pushing the filament through the PTFE tube until it starts coming out
of the print nozzle
•Tell the printer to print from SD card
•Select “Tronxy Test Print.gcode”
•Execute the command.
Week 2

Step 10 cont.
•Once the extruder and PB have reached
temperature the print process will start
•The first thing the printer will do is heat up, next
it will do a “HOME ALL”
•After the Z gap check, the printer will then take
nine Z gap height measurements to level the print
process.
•Now the print can start. You may need to prime
the hot end to get the filament flowing
–To prime the hot end, press the filament release lever
and push the filament until you see flow
Week 2