Individual assignment on 3D Scanning and Printing

3D printing or additive manufacturing is a process of making three dimensional solid objects from a digital file. The creation of a 3D printed object is achieved using additive processes. In an additive process an object is created by laying down successive layers of material until the object is created. Each of these layers can be seen as a thinly sliced horizontal cross-section of the eventual object. 3D printing is the opposite of subtractive manufacturing which is cutting out / hollowing out a piece of metal or plastic with for instance a milling machine. 3D printing enables you to produce complex shapes using less material than traditional manufacturing methods. (Source:3D printing)

The work flow for the assignment is given below.

About Fracktal works

Additive and subtractive method

3D print design using Rhino.6

Use of Fracktory S/W

Object Printing

---

About Fracktal works

Specifications

Bed Size:250 mm x 250 mm x 300 mm

Print Technology: Fused Deposition Modelling (FDM)

Filament Diameter: 1.75mm

Nozzle Diameter: 0.4mm

Nozzle Temperatures:Upto 240 °C

Bed Temperature: Upto 110 °C

Compatible Materials:ABS, PLA, Tough PLA, PLA+, PETg, PVA, PVA+,BVOH,Polycarbonate, Nylon 12*, Carbon Fiber Nylon*, Carbon Fiber PLA

Supported File Types: STL, OBJ

File Transfer :USB Pen Drive, WIFI, LAN

---

Additive and subtractive method

Additive method

Additive method is actually a synonym for 3D printing and/or any process by which 3D objects are constructed by successively depositing material in layers such that it becomes a predesigned shape.

Subtractive method

Subtractive method is a process by which 3D objects are constructed by successively cutting material away from a solid block of material. Subtractive process can be done by manually cutting the material but is most typically done with a CNC Machine.

---

3D print design using Rhino.6

Open the Rhino.6

Select new file

Goto the Top view

Left click on cascade “Solid creation”



Left click on “tube”



Enter the dimension of the ring.




Copy an object and rotate it in 90⁰ through the center.



Select both the object and group in with Boolean union command.



Similarly create different rings of different diameters

Create small sphere and align at the center with Align command.



Align all the objects with alignment type concentric.



select each object and rotate it with particular angle by Rotate command along center point.



different views of the objct




Once the object is ready ,select the object goto file menu click on Export selected.



Enter the file name and select save type *.stl, click on save button.



Enter tolerance 0.01mm (default), click ok




Select file type Binary, click ok.Rhino file is converted into stl file.

---

Use of Fracktory S/W

Fracktory S/W its open source s/w. It convert stl file in to G-code.for 3d printing machine required only G-code.

Import the stl file.



Imported object were shown in image



Set the different parmeters like move,scale etc for placing design perfectly on the surface.





Select material type ABS,PLA etc,we select ABS material.

Select infill density 20%,infill pattern Tringle etc as shown in image.



with all this parameter and different view of object.














Click on Prepare,Slicing were started.G-code file were generated with printing time.save the file.



The G-code file png image

---

Object Printing by 3D Printer

Turn the printer on. for smooth printing go through the followings.

Controll panel of 3D printer.



Go to control,Check the feed rate of Nozzle



temperature of Nozzle and bed



Home position of Nozzle and bed



Set the flow rate,filament



Goto calibrate ,wizard for calibrating bed.



Goto Print select print from



Select file from the list



select file from list save it in local or print it.



Start the printing.



Object printing on going



Finally 3D printed object is ready



Removing all the supports carefully



Object is ready

Hero Shot

Top view of an object

Why this object can not be made by "Subtractive method"

This object consist of internally connected rings,overhangs and mainly intenal moving object(Ball).Due to this it can not be made by subtractive method.

---

3D Scanning

3D scanning is the process of analyzing a real-world object or environment to collect data on its shape and possibly its appearance (e.g. colour). The collected data can then be used to construct digital 3D models.(Wikipedia)

About 3D Sense

Scan the object

Used of Fracktory S/W

Object Printing

---

About 3D Sense

For scanning we used 3D sense software.This software is open source.We can download it from internet.for scanning always connect scanner to computer.By using this we can scan person or object.If you want to scan person ,click on person .In this software we can solidify our object or we can change color.Save file in .obj format.

3D Sense Scanner

---

Scan the object

Start scanning the object through sense 3D scanner ,rotate the object 360 degree smoothly (otherwise object loss will display the error lost tracking) with the fixed position of scanner.once the scanning is completed save the file in .obj format.

Open the Sense software.

Click on what you want to scan.



select head or full body.



Set up for csanning.




Once the scanning is compled you can edit the scan image and save it in .obj format.

---

Used of Fracktory s/w

Import the file in Fracktory s/w.

Set the required parameters like material,infll, bed and nozzle temp.etc



Imported object in Fracktory s/w



the layer view of object after slicing



G-code png image.

---

Object Printing by 3D Printer

Check the bed leveling properly.

Select G-code design file.

Start the print command

---

ADVANTAGES & DISADVANTAGES OF 3D PRINTING

ADVANTAGES

We can print even complex object design using 3D printer.

Create prototype in couple of hours which increase the designing process speed.

Basic material used for 3D printing is plastics thus the object printed by this one are much lighter than traditional one.

Reduces the quantity of waste materials created during the production process.

DISADVANTAGES

Since the dimensions integrated into 3D printers is relatively small, which restricting the part sizes .

Though its new technology it offen reqquires trial and error method when creating parts on a 3D printer.

Very few materials are available for printing in 3D printing technology

---

Learning Outcomes

I tested the clearence test for the our lab 3D printer.

Understand the difference between Additive and substractive mentod.

Design the additive object in Rhino.

Used the Fracktory software for G-code generation.

Print the object using 3D printer.

Used the 3D sense scanner for scanning the object.

---

Downloads

Original files of 3D printed Object




anand4 by sunshine.anand on Sketchfab

Original files of 3D Scanned Object




Anand by sunshine.anand on Sketchfab




Rhino design file.

Download Original files of 3D printing object.

Download Original files of 3D Scanning object.

---

SAMS-Smart Azolla Multiplier System by Anand S. Tale is licensed under CC BY-SA 4.0