Description
FEATURES
• EASY TO BUILD
This building kit has been designed to be easy to build without expensive tools or advanced knowledge! A complete tutorial is provided, the goal was to make its construction as accessible as possible to the general public. In the event of a issue, the customers will receive free assistance in the “Help & Questions” section.
• CHEAP
This Handbrake can be built with a small budget ranging from 25€ and 85€, depending on the parameters you have chosen (choice of material, USB Board…) and the equipment you have (3D Printer, CNC Rooter…).
• STRONG AND ADJUSTABLE
This Handbrake has a very strong structure, stable and smooth mechanism. It has been designed to allow a maximum of adjustments! You can adjust angle, hardness and stop.
ASSEMBLY
BUYING GUIDE
• ELECTRONICS
- Arduino Pro Micro Board
- 20kg Loadcell + HX711 Amplifier[Option : 20kg and HX711]
- Micro USB Cable
• SPRINGS
- Recommanded Spring [Option: Length: 65mm, Diameter: 20mm]
- Alternative Spring 1 [Option: length 65mm, Diameter 20mm]
- Alternative Spring 2 [Option: Color: yellow, Specification: 18x9x65]
- Bushing/Elastomers
• ASSEMBLY
- 3 Hex Wrench Spanner [Quantity: 1] [Option: 3-4-5mm, 4-5-6mm]
- Allen Hex key [Quantity: 1] [Option: flat head]
- Alternative Allen Hex key
- Screw driver hand tool
- LED Flash light
• SOLDERING
- Electric soldering iron
- Soldering station 1
- Soldering station 2
- Soldering wire
- Soldering dross
- Soldering tweezers
- Wire cable stripper
- Metal soldering holder
- Plastic soldering holder
• ALIEXPRESS SCREWS
- Pandametal Screws Store : most of what you need is here
- M5x20 and M6x20 spacers
- M6x40 spacers
- M8 Female Rod end [Quantity: 1] [Option: PHS8 Right thread]
- M8x130 Semi-threated screws
- M8x130 Semi-threated screws (alternative link)
• 3D PRINTER
Parts compatibility
You can use others parts to build this Handbrake (apart from those listed in the required parts section), but you will need to check that they are compatible.
• LOADCELL
Weight : 20kg
Loadcell dimensions:
• ELASTOMERS
Ø Inside diameter: min. 8mm, max. 10mm
Ø Outside diameter: not to exceed 20mm (except if you use M8 washers)
• SPRINGS
ØInside diameter: not below 8.5mm
ØOutside diameter: not to exceed 20mm (except if you use M8 washers)
• ALTERNATIVE HANDLE
- Alternative Handle #1
- Alternative Handle #2
- Alternative Handle #3
- Alternative Handle #4
- Alternative Handle #5
- Alternative Handle #6
Material of the Handbrake
• LASERCUTTING
I recommend stainless steel.
• 3D PRINTING
I recommand PLA or ABS. You can apply 20% infill for all parts except for the part Spring Support – Quantity 1.stl, for this one I recommand 80% or 100%.
• HAND CUTTING AND CNC MACHINING
I recommend aluminum because it is a soft metal that is easy to work with.
How to get the required materials
• LASERCUTTING
I advise you to request a quote from lasercutting companies near your home. All parts are flat with 5mm thickness, there are none to bend. So you can compare prices and choose the most profitable. You can save money if you make a combined order.
For France and Europe, I recommend the company ALPM, they provide a very good quality cut for a reasonable price.
• 3D PRINTING
You can buy a 3D printer, or find a 3D printing service like treatstock. The longest part that need to be printed is 210mm.
• HANDCUTTING
You need only sheets of papers, printer and Aluminium plates !
• CNC MACHINING
I recommend CNC Machining only if you own a CNC Rooter, otherwise it is not economically profitable enough compared to lasercutting.
• SCREWS
Bolt depot, Motedis and FixnVis.
Tolerances
Lasercutting DXF files and CNC Machining files : 0.2mm
3D Printing : 0.6mm
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