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5. 3D Scanning and printing

Instruction

Group Assignment

  • test the design rules for your 3D printer(s)
  • Document your work and explain what are the limits of your printer(s) (in a group or individually)
  • Document your work to the group work page and reflect on your individual page what you learned

Individual Assignment

What I did in Week5

  1. Test the 3D Printer : Angle, Overhang, Bridge, Wall-thickness, hole test → In this page
  2. Design and 3D print an object → individual page
  3. 3D scan an object, try to prepare it for printing → individual page

The 3D Printer we used : Creality Ender-3 V2

ender_v2.jpg

Technical Specifications (Ender-3 V2 FDM 3D Printer Properties)

index Technical Specifications
Modeling Technology FDM(Fused Deposition Modeling)
Printing Size 220x220x250mm
Filament PLA/TPU/PETG
Working Mode Online or SD card offline
Supported OS MAC/WindowsXP/7/8/10
Filament Diameter 1.75mm
Slicing Software Simplify3d/Cura
Machine Size 475x470x620mm
Product Weight 7.8KG
Package Weight 9.6KG
Power Supply Input AC 115V/230V; Output DC 24V 270W
Layer Thickness 0.1-0.4mm
Print Precision ±0.1mm
Hotbed Temperature ≤100°

Angle Test

gcode 

Printed by 3d Printer

printed_angle2.jpeg

printed_angle1.jpeg

Angle test conclusion:

Angles greater than 30 degrees CAN be printed fine.

20 is borderline, and Angles less than 20 degrees CANNOT be printed fine.

→Bending should be limited to 60 digree angle.

Overhang test

download and convert to gcode by cura

overhang_curatogcode.png

index Settings
Quality Standard Quality
Quality/Layer height 0.2mm
infill 20.0%
Generate Support Uncheck
  • printed by 3d Printer

overhang.jpeg

overhang2.jpeg

Overhang Test Conclusion:

overhang which length is under 0.2mm can be printed fine.

overhang which length is over 0.3mm cannot be printed fine.

Bridge Test

Design the object in Fusion 360 and export to Cura

bridge_cura.png

inside dimensions : 20, 25, 30, 35, 40, 45 mm + 45, 50, 55, 60, 65, 70 mm

Printed out and check wether they can be printed expextedly

bridgetest_result1.png

bridgetest_result2.png

bridgetest_result3.png

Bridge Test Conclusion:

~45mm : printed very clearly just as I intended

50~60mm : printed clearly to some extent

65mm~ : printed bad-looking

wall_thickness Test

thickness_cura.png

thicknesstest.jpeg

Conclusion:

Upper row (Fence) : Shapes less than 0.4 mm thick are not output. Output is available for sizes larger than 0.5 mm.

Downer row (Grooves) : grooves smaller than 0.3mm cannot be output. thicker than 0.4mm are ok

M3_hole_test

m3_hole_test.png

printed out

hole_result1.png

hole_result2.png

hole_result3.png

Conclusion:

the shape of circle (upper row) : the hole of second from left (3.1, fx : 0.05) is just-fit

the shape of hexagon (lower row) : the hole of the first from left (3.0) is just-fit

What we learned

to Yukiya’s individual site


Last update: June 3, 2022