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Acrylonitrile Butadiene Styrene, or ABS, is a widely used CNC plastic, which meets the needs of many industries because of its material properties and accessible cost. ABS is one of the best machinable plastics with a low raw material cost. Both of these factors have led to the use of the material for many prototyping applications, as well as certain end-use applications.
| Processes | Lead Time | Color | Tolerance | Price | Applications |
|---|---|---|---|---|---|
| CNC Machining | As fast as 3 days | White & available in all major colors. | With drawing: as low as +/- 0.005 mm No drawing: ISO 2768 medium | Qty & Precision dependent | Impact-resistant applications, production-like parts (pre-injection molding) |
| 3D Printing | 2-4 Days based on size | White & available in all major colors. | FDM - 150 µm SLA - 40 µm | Lowest in market | Strength & complex geometries |
| Injection Molding | 20-30 Days | White & available in all major colors. | As low as +/- 0.030 mm | Qty & Precision dependent | High strength, Good surface finish. |
| Services Name | Max Size | Min Size | Min Thickness | Undercuts | Radii Depth |
|---|---|---|---|---|---|
| For CNC Machining | Max Part Size: 600 mm | Min End Mill Size: 0.8 mm | Min Wall Thickness: 0.5 mm | Undercuts: Square profile, full radius, dovetail profiles | Radii: Depth: Depth must not exceed 12x drill bit diameter. For end mills, depth must not exceed 10x tool diameter. |
| For 3D Printing | Max Part Size: 500x500x500 mm | Min Hole size : 1 mm | Min Wall Thickness: 1 mm | Min Feature Size : 3 mm | Recommended fillet & Chamfer angles : > 45 Deg |
| For Molding | Max Part Size: 500x500x500 mm | Min Hole size : 0.5 mm | Min Wall Thickness: 0.5 mm | Ribs should be 40-60% the thickness of outer walls and should still maintain draft | Minimum draft angle of 0.5°, or up to 5°, for faces with medium textures |
ABS has a strong resistance to corrosive chemicals and/or physical impacts. It is very easy to machine and has a low melting temperature making it particularly simple to use in injection molding manufacturing processes or 3D printing on an FDM machine. ABS is also relatively inexpensive (prices, currently around $1.50 per pound, typically fall somewhere between those of Polypropylene (“PP”) and Polycarbonate (“PC”). ABS plastic is not typically used in high heat situations due to its low melting point. These characteristics lead to ABS being used in a large number of applications across a wide range of industries.
There are few factors when to choose VC or FDM.
Up to 6 months is recommended.
For complex geometries FDM is cheaper.
For simple geometries like rods, sheCNC machining is cheaper.
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