3D Scanning and Printing

Group Assignment

  • test the design rules for your 3D printer(s)

Link to Fab Academy 2020 assessment page

3D Printers in Fablab Kannai

da Vinci Mini by XYZ PRINTING (Material: PLA)
UP Plus2 by TierTime Technology (Material: PLA, ABS)
MakerBot Replicator2 by ALTECH (Material: PLA)
(No Image)
L-DEVO by Fusion Technology (Material: PLA, ABS)

Test Data

I want to make a tiny whistle that has undercut and nested composition (a ball is inside it). I found a sample model in thingiverse and tried to simplify the model with measuring dimensions in my individual work.

For having the composition of overhang, I wanted to test:

test print model - angle
test print model - bridging
test print model - thickness
thickness of wall

Test Print

I decided to use MakerBot as my instructor, Tamiya-san, adviced me that the accuracy is greater than davincihi that I've used.(Afterward, I also used up2 Plus and ABS)

Maker Bot

1. Slicer software of MakerBot is running on the Windows machine in Kannai.
2. Open stl file.

3. Checked printer setting

Setting of Maker Bot ("Standard" preset)
Main Parameter Value
Material PLA
extruder temperature 205℃
Travel Speed 150 mm/s
Z-axis Travel Speed 23 mm/s
Extrusion Speeds(Bridges) 40 mm/s
Extrusion Speeds(First layer) 30 mm/s
Infill Density 30%
Layer Height 0.30mm
Number of Shells two
Roof and Floor Thickness 0.80mm
Raft to Model Spacing 0.23mm
Raft Margin 4.0mm
Support off
Filament Diameter 1.77mm

4. Make sliced data (The data format made by MakerBot slicer is "xsg")

Sliced data of "Angle" by Maker Bot.

You can see sliced layer at preview screen.

Sliced data of "Bridging" by Maker Bot.

Sliced data of "Thickness" by Maker Bot.

5. 3D Print

1) At Maker Bot Replicator 2, set "Utilities"

2) Change Filament

3) Heat extruder

4) Cut filament diagonally

5) Insert filament into extruder

6) cover over filament

7) Check filament comes out from extruder

8) Select build from SD

9) Select the file to print

6. Result

Firstly, I was successful to print out "Angle" from Maker Bot. (Evaluation is later on)

Next, I tried to print out the other data of "bridging". However, after that, Maker Bot did not work. Sufficient amount of filament did not come out from extruder .

Tamiya-san and I tackled to this. Check the extruder, cleaned that, changed filament and decomposed that .However, it did not work. So, I changed 3D printer into UP Plus2.

Up Plus 2

In Fablab Kannai, the windows 8 client that is connected directly to Up Plus 2 3D printer device has a slicer software.

1. Open stl file of "bridging"

2. Checked printer setting

Comparing to Maker Bot, the setting is not so detailed.

Main Parameter Value
Material ABS
extruder(nozzle) temperature 247.6℃
Lamination pitch 0.25 mm
Infill Density low
Number of Shells three
Height of Nozzle 135.3
Support layer 3
Support area 3mm2

3. Setup Printer and 3D print

1) I needed to adjust z-axis of Up Plus2(hight of the extruder and nozzle).

2) The appropriate distance between nozzle and platform is "one namecard"

3) Clicking "To" button, the platform raises up to the height.

4) Print started from drawing the raft

5) When print started, the software tracking the status of printer

Finally, I got "bridging" model.. BUT! I failed to make this because it has support... So I retried this without support

Support layer off
Support area off

I used ABS material. It's first time for me to print by ABS.

4. Result

After setting up the UP Plus 2 without support, I was successfully to print out "bridging" and "thickness". Also, an member of Fablab Kannai recovered Maker Bot with cleaning up extruder with heating up decomposed extruder. So, I checked the "thickness" of Maker Bot and Evaluated that.

Bridging by UP Plus 2

Thickness by UP Plus 2

Thickness by Makerbot

Evaluation of Test Cut


10 deg. is starting point of breaking. 0 deg. is bad.

Design of my model of individual work (whistle) contains 0 deg of angle, but it's supported by bridge. So, I need to check the what length of "bridge" can be supported.


20mm is bad, but 18 mm is supported by bridging.

My model contains a cylindrical column with a cavity. Circle-line poll supports 19mm of bridging? I will check it with my model


UP Plus 2
Maker Bot

ABS using UP Plus 2 can make the smaller width of slit and less detailed thickness of wall than PLA using Makerbot

My model (whistle) contains slit for blowing by mouth. The limit width of UP Plus 2 (ABS) is 0.5mm. While limit width of Maker Bot(PLA) is 1.0mm. So, anyway I need the width of slit more than 1.0mm

The minimal wall of thickness for UP Plus 2 is 0.5mm while 0.1mm for Maker Bot (with some strange string between the walls). So, I need the thickness more than 0.5mm for my model.