OSAT Scrub Brush
Project developed by User:Pierce Mayville
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Abstract
This is a scrub brush for cleaning what ever it is that needs a little elbow grease. It costs a fraction of commercially available scrub brushes. In less developed regions cleaning tools such as a scrub brush are indispensable. This brush is also customizable allowing any size brush to be made easily for any application. It is printed using a bridging technique. [1] This project was inspired by other fully 3d printable bristle designs [2] [3] [4] [5] [6] [7] . Note, some of these designs such as the broom are not OSATs as they are more costly to print than their commercial equivalents.
Bill of Materials
- PETG or PLA filament
- PETG results in stronger more durable brush bristles
- PLA bristles tend to be more brittle
- Customizable scrub brush files can be found at: https://www.thingiverse.com/thing:4025603
- Print using settings detailed in tech specs
Tools needed for fabrication of the OSAT
- MOST Delta RepRap or similar RepRap 3-D printer
- Sharp knife, scissors, or other cutting implement
Skills and Knowledge Necessary to Make the OSAT
- 3d printing slicing basics
- 3d printing bridging techniques
Technical Specifications and Assembly Instructions
- Download desired .stls from thingiverse.com
- Cura Print Settings
- Scale to 101% so G-code will slice bristles
- Set layer height to 0.3 mm if using uncostumized bristles
- At least 25% infill
- Set default print speed to 60 mm/s
- Enable "Print thin walls"
- Disable support
- Enable bridge settings
- Min. bridge wall length: 0.5 mm
- Bridge skin threshold: 70%
- Bridge wall casting: 0%
- Bridge wall speed: 30 mm/s
- Bridge wall flow: 108%
- Bridge fan speed: 100%
- Watch first couple layers to ensure bristles are printing properly
- Try increasing bridge wall flow or decrease bridge wall speed if they seem disconnected from one side
- The smaller test brush .stl from thingivrese.com takes ~3 hours to print
- Cutting the brushes apart takes 10-15 minutes
Common Problems and Solutions
- Bristles are not printing right
- Try scaling .stl to 101% to ensure it is sliced properly
- Change bridge print settings
- Make changes to bristle dimensions in .scad
- Bristles breaking during cutting
- Try a different color or different filament (Any color PETG should work well)
Cost savings
- Print that produces two 120mm x 60mm brushes is ~$7.85
- Scrub Brush with Easy Grip from Walmart is $7.03 [1]
- $3.11 savings or a 44% savings
Benefited Internet Communities
- Spyder3D World [2]
- DIY [3] [4]
- OSAT [5] [6]
- r/Brooms [7]
- r/3Dprinting [8]
- 3d printing repositories [9] [10] [11]
- Cleaning [12] [13]
References
- ↑ Spyder Byte – Bridging Techniques, SPYDER3D (Dec16, 2014) Available: https://www.spyder3dworld.com/spyder-byte-bridging-techniques/
- ↑ Nail Brush - Fully 3D printed! , Turbo_SunShine (Jan 14, 2019) Available: https://www.thingiverse.com/thing:3355727
- ↑ Bouldering Brush v2, Turbo_SunShine (Feb 7, 2019) Available: https://www.thingiverse.com/thing:3410740
- ↑ Room Broom - Spyder3D World, 3DKreashunz(July 7, 2018) Available:https://www.spyder3dworld.com/item/room-broom/
- ↑ Dust Brush & Pan (Fully 3D Printable), Superbeasti (Oct 1, 2019) Available: https://www.thingiverse.com/thing:3890384
- ↑ Bridging: 3D Printed Paint Brushes - Spyder3D World, 3DKreashunz (July 7,2018) Available: https://www.spyder3dworld.com/item/3d-printed-paint-brushes/
- ↑ Master Jedi YodaHawk - Spyder3D World, 3DKreashunz (July 7,2018) Available: https://www.spyder3dworld.com/item/master-jedi-yodahawk/