PLA
The most widespread desktop 3D printing material. It prints at low temperatures, exhibits little warping and produces good surface quality, but it is prone to creep under long-term load.
Timeline (last 90 days)
The chemical compatibility between PLA and TPU is generally poor, and interfacial strength is usually enhanced through mechanical interlocking.
The structural parts of the robotic hand are printed in PLA, and the fingertips are printed in TPU.
Currently most 3D printing filament involves shipping US PLA pellets to China to be drawn into filament and then sold back to the US, with costs rising from 3 US dollars per kilogram to 15 US dollars per kilogram.
SO-ARM 102 officially recommends PET-CF (carbon fiber reinforced PET) for the best stiffness performance, while also confirming that PLA prints well.
Structural parts printed in PLA or PETG are low-cost and allow flexible iteration, but are inferior to metal in rigidity and durability.
PLA (polylactic acid) is low-cost, easy to print, and environmentally friendly, making it the preferred filament for beginners in 3D printing.
PLA has poor heat resistance and softens at approximately 60°C; PETG balances printability and toughness; TPU is elastic and suitable for flexible parts.
PLA has poor heat resistance (softening at approximately 60°C) and is unsuitable for parts under long-term stress; PETG balances printability and toughness; TPU is elastic and suitable for making flexible parts.
Desktop 3D printer prices have dropped to the 1,000–3,000 RMB range, and materials such as PLA and PETG can meet the strength requirements of most non-load-bearing assistive devices.
During development, the author tried various 3D printing materials ranging from PLA and ABS to nylon, but ultimately switched to a one-piece CNC aluminum alloy mid-frame due to insufficient strength in the ultra-thin structure.
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All Facts (12)
The chemical compatibility between PLA and TPU is generally poor, and interfacial strength is usually enhanced through mechanical interlocking.
50%UnverifiedThe structural parts of the robotic hand are printed in PLA, and the fingertips are printed in TPU.
50%UnverifiedCurrently most 3D printing filament involves shipping US PLA pellets to China to be drawn into filament and then sold back to the US, with costs rising from 3 US dollars per kilogram to 15 US dollars per kilogram.
50%UnverifiedSO-ARM 102 officially recommends PET-CF (carbon fiber reinforced PET) for the best stiffness performance, while also confirming that PLA prints well.
50%UnverifiedStructural parts printed in PLA or PETG are low-cost and allow flexible iteration, but are inferior to metal in rigidity and durability.
50%UnverifiedPLA (polylactic acid) is low-cost, easy to print, and environmentally friendly, making it the preferred filament for beginners in 3D printing.
50%UnverifiedPLA has poor heat resistance and softens at approximately 60°C; PETG balances printability and toughness; TPU is elastic and suitable for flexible parts.
50%UnverifiedPLA has poor heat resistance (softening at approximately 60°C) and is unsuitable for parts under long-term stress; PETG balances printability and toughness; TPU is elastic and suitable for making flexible parts.
50%UnverifiedDesktop 3D printer prices have dropped to the 1,000–3,000 RMB range, and materials such as PLA and PETG can meet the strength requirements of most non-load-bearing assistive devices.
50%UnverifiedDuring development, the author tried various 3D printing materials ranging from PLA and ABS to nylon, but ultimately switched to a one-piece CNC aluminum alloy mid-frame due to insufficient strength in the ultra-thin structure.
50%UnverifiedPETG的玻璃化转变温度约为80°C，打印温度通常在230-250°C之间，吸湿率低于0.2%
50%UnverifiedPLA的玻璃化转变温度约为60°C，在高温环境下存在形变风险
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