NWA3D A5 Manuel utilisateur
NWA3D A5 User Manual
1. NWA3D A5 3D Printer Part Diagrams
2. Assembling the Spool Holder
3. Leveling the Build Plate
4. Loading and Unloading Filament
5. Operation: The Four Steps in 3D Printing
6. Troubleshooting
7. Additional Resources
© 2017 NWA3D LLC Version 2.1
NWA3D A5 User Manual
1. NWA3D A5 3D Printer Part Diagrams
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© 2017 NWA3D LLC
NWA3D A5 User Manual
2. Assembling the Spool Holder
1. Loosen the nuts on the two bolts
installed on the spool holder side
pieces until they are near the end
of the bolt threads—but don’t
remove them completely.
2. Slide the base of the spool
holder into the side piece while
at the same time sliding the nut
into the small groove in the base.
3. Attach the side piece to the base by
tightening the bolt with a 3mm hex
key (Allen) wrench. Do not
over-tighten.
4. Repeat Steps 2 and 3 to attach the
other side piece.
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NWA3D A5 User Manual
3. Leveling the Build Plate
Click here to watch the video on how to level the build plate
To build good parts, the build plate needs to be level, and the nozzle needs to be
about 0.1–0.2mm from the build plate in all locations. If you have a LokBuild print
surface, we recommend a distance of 0.2mm. This is about the thickness of two
pieces of printer paper (or one piece folded in half to double its thickness). If you
use painter’s tape as your print surface, we recommend a distance of 0.1mm. This is
about the thickness of a single piece of printer paper. You want to adjust the height
of the build plate so that you can barely slide the paper between the nozzle and the
build plate with only a little resistance.
1. Select Prepare > Preheat PLA. This will heat the nozzle to melt any hardened
plastic that might be on the nozzle and affect the leveling process.
2. Select Prepare > Auto home. This will move the X, Y, and Z axis stepper motors to
to their home positions (0,0,0).
3. When the motors stop, select Prepare > Disable steppers. This will allow you to
move the “hot end” of the extruder assembly (X axis) and build plate (Y axis) by
hand.
4. Pro Tip: The Z axis stepper is also disabled, and you don’t want it to move at all.
So you should handle the printer gently during the leveling process. Keep it on a
flat surface and don’t tip it while leveling.
5. Slide a piece of paper between the nozzle and the build plate. For LokBuild print
surfaces, first fold the paper in half to double its thickness to about 0.2mm.
6. Move the hot end (X axis) and build plate (Y axis) so that the nozzle is directly
above one of the three wingnuts under the bed. Adjust each of the wingnuts
under the bed until the paper slides with just a tiny bit of drag. We recommend
adjusting the wingnut on the left first, then the two on the right, then repeating
the adjustment at all three locations at least once more.
7. Make sure the paper slides with just a bit of drag at all locations on the build
plate, including the center of the build plate. Try and get the amount of tension
on the paper to be consistent at all locations.
8. Select Prepare > Auto home, then Prepare > Disable steppers, and recheck in
several places. This is to make sure the Z axis lead screw didn’t rotate during the
leveling process.
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NWA3D A5 User Manual
9. The first layer of the print will show whether the distance between the nozzle
and build plate is correct. Refer to the following graphic for clarity:
a. If the bed is too high, the extruded plastic will squeeze out the sides of the
nozzle. The nozzle will plow the plastic and leave a first layer that is too thin.
b. If the bed is too low, the extruded plastic may not stick to the build plate.
Parallel lines of filament on the first layer will look rough, with high tracks
and low valleys.
c. After you have fine-tuned the bed level during the first layer, you may want
to stop the build, clear the build plate, and restart the build.
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NWA3D A5 User Manual
4. Loading and Removing Filament
1. Loading filament
a. Load a spool of filament into the spool holder. Slide the bolt through the
spool’s center hole, and then place the bolt into the recessed grooves on the
spool holder.
b. Cut the end of the filament at an angle so the irregular melted plastic doesn’t
cause a clog. It will also be easier to feed into the extruder and Bowden tube.
c. Feed the end of the filament into the extruder by hand as you squeeze the
extruder release lever.
d. Push the filament all the way through the white Bowden tube until it stops
when it hits the back of the nozzle.
e. Select Prepare > Preheat PLA.
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NWA3D A5 User Manual
f. When the printer is fully heated, you may want to remove all of the filament
color left in the printer from previous prints before you start a new print. To
do this, you can manually push filament through the nozzle until the new
color starts coming out of the nozzle.
g. Pro Tip: Never leave the printer preheated with material inside of it for long
periods of time. This will cause the filament to bake inside of the extruder
assembly and can cause it to clog.
2. Removing filament
To remove the filament cleanly, you should do a “soft pull.” This involves heating
the nozzle to 100°C, then pulling the filament out of the printer.
a. Select Prepare > Preheat PLA and wait until the nozzle temperature reaches
100°C. (You can also select Control > Temperature > Nozzle, spin the
temperature to 100°C, and then navigate back to the Info Screen.)
b. Wait for the nozzle to reach the set temperature.
c. When the nozzle temperature is about 100°C, squeeze the extruder release
lever and pull the filament out of the extruder.
d. Cut the end of the filament to remove the irregular plastic at the end.
e. Pro Tip: Feed the end of the filament into the hole on the side of the spool.
This will insure it doesn’t get tangled and cause a build to fail the next time
you use it.
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NWA3D A5 User Manual
5. Operation: The Four Steps of 3D Printing
3D printing involves these four steps:
1. Create a 3D file (Make)
2. Slice the file for 3D printing (Slice)
3. Send the file to the printer (Transfer)
4. Select the file on the printer (Print)
1. Create or find a 3D file
a. You can create a 3D model—a digital geometry—using any CAD
(computer-aided design) software program. We recommend free programs,
such as TinkerCAD, OnShape, and Blender. Another is SketchUp, which has
free licenses available for schools. These programs take some time to learn,
and can be challenging. But they are also rewarding, especially when you see
your own creation being printed on your 3D printer!
Every CAD program allows users to save or export digital files for 3D
printing. You want to save your file as an STL file (“filename.stl”). The STL file
is the standard file format for 3D printing. In some programs, it’s as easy as
the Save command. In others, you need to select the File > Export option, and
choose the STL format. OBJ files can also be sliced and 3D printed.
b. You can find 3D models in many online libraries of digital content.
Thingiverse.com, GrabCAD.com, and Instructables.com are examples, and
many other sites exist.
2. Slice the file for 3D printing
Click here to learn how to setup and use Cura for the NWA3D A5
Slicing is the process of converting your 3D model into the layered print
language your printer can understand, called G-Code. We recommend using free,
open-source slicer programs. Our favorite slicers are Cura and Repetier Host.
Both are free and easy to use. We’ve included Cura and its setup .ini file on your
printer’s SD card because it’s easier for beginners. We recommend that you
install Cura on a PC or Mac and use it to do your slicing.
There are a lot of slicers that will create G-Code automatically for your printer.
All you have to do is input the correct settings for your printer (using the files we
included), import your 3D model, and select save the G-Code. It’s that easy!
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NWA3D A5 User Manual
a. Install Cura on a PC or Mac (both the .exe and .dmg versions are included on
your microSD card).
b. Open the Cura application. You’ll be given several options. In the Add new
machine wizard, choose “Other” in the “Select your machine” step, and then
“Mendel” in the “Other machine information” step (RepRap (Marlin/Sprinter)
G-Code Flavor, if it asks).
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NWA3D A5 User Manual
c. Once you add the new machine, click Machine > Machine settings and change
the machine settings to: Max width 125, Max depth 150, Max height 100,
Extruder count 1, and Heated bed unchecked. You can also rename the
machine to “A5” or “Our A5” if you’d like. Click “OK.”
d. Select File > Open Profile and select “NWA3D A5 Printer Profile.ini” from the
microSD card. This is the medium-quality settings for the A5 printer.
e. The “A5 Printer Profile.ini” settings in Cura for the A5 are shown on a screen
capture on the microSD card. They are also shown in the following image:
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Autres manuels pour A5
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Table des matières
Autres manuels NWA3D Imprimante 3D
