05.3D SCANNING AND PRINTING
Feb 24, 2016
This week we learned about "Additive versus subtractive processes" and "How to do 3D scanning and printing".
The assignment for this week is in two parts. One is designing and 3D printing a small object that could be not made subtractively. And the other is 3D scanning an object and optionally print it.
05-1.Test the design rules for my printer
[Material]PLA filament (Φ1.75mm)
[Tool]
Software : Rhinoceros (MacOSX)
3D printing machine : Makerbot Replicator2
[Process]
First, I made the design rules to understand the performance of Replicator2.I made this data, because I wanted to compare actual dimensions with the dimensions of 3D data.
Rhinoceros data > benchmark_01_160225.3dm

[Setting]
- Resolution: 0.3mm
- Infill: 5%
- Number of Shells: 2
- Support & Raft: off

I measured the point of "10.0mm".



On 3D data: Φ10.0mm / H:10.0mm
On the actual object: Φ9.80mm / H:9.90mm



On 3D data: Φ10.0mm / H:10.0mm
On the actual object: Φ9.65mm / H:10.0mm
The actual object shrink by heat. So, It seems to become smaller than 3D data.
When you make a hole in an object, please be careful of this point.


I used pipes with a diameter of 27.5mm. I designed a joint that inner diameter is 28.0mm because an object which is printed by 3Dprinting machine gets smaller than 3D data. (Around 0.2~0.5mm) Then, I was able to connect it to pipes without glue.
Data > pipe_stand.stl
05-2. Making data and printing it.

(1)Data making






















Rhinoceros data > test.3dm
(2)Printing


- Resolution: 0.3mm
- Infill: 10%
- Number of Shells: 2
- Support & Raft: on
- Build time: 1h15min

size > W:45.3mm / H:45.3mm / D:22.95mm
There is not the gap that a drill goes along inside of the object.
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- [FabAcademy2016] Week05 Windmill00
- [FabAcademy2016] Week05 Windmill01 (Data > windmill_1.stl , windmill_1.3dm)
- [FabAcademy2016] Week05 Windmill02 (Data > windmill_2.stl , windmill_2.3dm)
- [FabAcademy2016] Week05 Windmill03 (Data > windmill_3.stl , windmill_3.3dm)
- [FabAcademy2016] Week05 Ring (Data > ring.stl , ring.3dm)
- [FabAcademy2016] Week05 Assemble Windmill & Ring
05-3. 3D scanning




I took about 20 pictures from different anlgles.
Maybe I should turn the carema rather than scanning table.