3D Scanning and Printing¶
Welcome to week 5 assignment!¶
Key Learnings This week was about learning 3D printing and scanning a 3D object!
Along with Amman Fab-Academy team we printed a total of 8 models to test our printers capabilities and restrictions for the group assignment, for the individual assignment I designed and 3d printed an object that cannot be done subtractvely. I also scanned my instructor Thanks Emma :) for the scanning assignment.
- Machine 1: Ultimaker-s5
- Machine 2: Prusa 3D printing machine
- Slicing Software: Cura
- File Download: Slide Design
- Group Assignment: Test files- finish Test files- clearance
Ultimaker printing limits are X * Y * Z = 223 * 223 * 205 mm, Preparing Ultimaker 3d printer to start the job requires adding the nozzle with the required size and adding the filament.
prusa is an open source 3D printer, printing limits are 250 × 10 × 210 mm, Nozzle default size is 4mm, filament diameter is 175mm which is smaller than the ultimaker filament. price is very affordable.
Operating on the machine¶
To start any job at the Ultimaker printer, first insert the filament with the right diameter into your machine. press no material >> upload material >> choose type of material you are uploading, in my case it was PLA.
The Filament / Ultimaker:
second sometimes your print core is not inserted or you need to change size. make sure the filamnet you chose is the same size as the print core you are inserting. press no print core >> upload >> and insert it in the right place.
The nozzle (Print Core) / Ultimaker:
Third insert your USB in machine, choose design file and upload. machine will start extrusion of old filament from previous print, once it finish it will start printing your job.
First time printing smile :)
Safety: Do not touch the surface where the design is being printed it is very hot! and keep your hands clear from any moving part.
Design Rules¶
When you work on a model to 3D print, there are some rules and restrictions that are recommended to apply. Rules should be considered at the time of making the 3D model to have the best prints.
General Design Rules
NOTE: These are the design rules for FDM printing (printing general rules Source). For example; for Holes the minimum recommended diameter is 2.0 mm.
Ultimaker VS Prusa Design Rules (according to our test)¶
Test 1 - Clearance: This print consists of an STL file to test clearance between moving parts, For Ultimaker clearance is 2mm. For Prusa clearance is 3mm.
Test 2 - Unsupported angles The Ultimaker show good quality at angles =< 65 Deg. Prusa show good quality at =<60 deg.
Test 3 - bridging both printers show good quality at 180mm and below.
Test 4 - Surface Finish both printers showed good quality at 0.2 mm layer height.
Printing Settings:
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Infill:20%
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Layer Height:0.2
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Build Plate Adhesion Type: Brim
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Support Pattern: ZigZag
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Only some items were printed with support not all.
My 3d Printed design¶
Additive Printing “Additive Manufacturing refers to a process by which digital 3D design data is used to build up a component in layers by depositing material.”Source
The 3D design¶
I used Fusin 360 to model the object. Because I will build a slide for my final project I wanted to test on a small print, therefore I designed this slide first but after sending it to the 3d printer software (Cura) I realized it requires a lot of support which I do not prefer! therefore I changed my design to be self supported.
First I drew a coil, I changed coil height, diameter and number of revolutions as required (most important thing is to pick square coil),
Using the Shell option i chose the surfaces i need to make into a shell and specified thickness of the shell to .5mm.
Using the Fillet option I chose the spiral lines forming the coil and pressed fillet.
then I drew the support column in the middle with a plate underneath to hold the slide.
Slicing Software (Cura)¶
I used Ultimaker Cura to slice the STL file and PLA filament to print the object.
Open Cura and import STL file. Use “Move”, “Scale” and “Rotate” commands to work on the position (or right click and choose ). Select machine, which is “Ultimaker5” in my case. For material select “PLA” and “Nozzle” 0.4 mm.
Open print settings> Custom and change printing settings as required. my custom settings were as follows:
This design I chnged because the slide required a lot of support!
To arrange images in the software, press right click on the object you’re printing > arrange
Quality
Layer Height: 0.20 mm
Line Width: 0.35 mm
Shell
Wall Thickness: 0.8 mm
wall line count: 2
Top/Bottom Thickness: 0.6 mm
Infill
Infill Density: 15%
Infill Pattern: triangles
Material Printing Temperature: 205 °C
Build Plate Temperature: 60 °C
Speed
Print Speed: 70 mm/s
Travel
Enable Retraction: Yes
Cooling
Enable Print Cooling: Yes
Fan Speed: 100%
Support
none
Build Plate Adhesion
Build Plate Adhesion Type: Brim
Hero short¶
3D Scanning¶
3D Scanner: Sense 1st Generation Software: 3DSystems Sense
In this part I scanned my instructor Emma (Thanks Emma) using Sense 3D scanner and Sense software. Image below shows the scanner and the scanned image.
Open the Sense software for Sense 3D scanner. Select type of scan (Person or Object), then select the size of object to be scanned. In our case it is a person.
Ask the person you are scanning to sit on a rotating base if possible. Hold the scanner in front of the object. Move forward and backward till you have a good view and a green rectangle surrounding the object. Make sure that the object is centered to the circle appears in software screen. Stay still at your position holding the scanner. press on “Start Scan” and ask the person to start rotating.
click “finish scan” and then press “Next” Now the scan is hollow and should be solidified. Click “Solidify” to fill in the scan. Click “Next”.
Save your scanned object in a folder and open in 3D viewer software to check your scanned 3D object.
Losing track
we kept losing track of the face, therefore; we found it best to start from the side and end at the other side instead of starting from front.
