Tamiya Long Universal Arm Set
- Price: Four arms as well as screws and nuts for $5.49
- Pros: Made specifically for robots. Holes in arm make it easy to attach stuff to links.
- Cons: Don't know what material it's made out of so may weigh too much. May be too short at 210 mm (~ 8 inches) long.
Lynxmotion Aluminum Links (Leg, Femur and Tibia)
- Price: Pairs of each: Leg for $10.17, Femur for $11.02, Tibia for $16.95 (vary based on size)
- Pros: Made specifically for robots. Thin, (hopefully) lightweight.
- Cons:Don't have much control over size of links. Designed for multiple servos per leg (not just one using tendons).
- Price: 2 for $8.96
- Pros: Made specifically for robots, can be used with Vex joints.
- Cons:Vendor provides sparse info on product. Don't know what material it's made out of so may weigh too much.
Carbon Fiber Tubes
- Price: Varies from $4 for 48 inch to $20 for 30 inches depending on the type
- Pros: Lightweight, durable, rigid, can be ordered in a variety of lengths and sizes
- Cons: Expensive, requires a machine shop for cuts
Papier Mache Tubes
- Price: Varies
- Pros: Cheap, strong yet light can shape it as desired. Many different ways to make
- Cons: Depending on the type use, may not be strong enough to handle weight.
Kite Frame
- Price: $3.50
- Pros: Carbon fiber tubes that are normally used to build kites. Can be purchased in large quantities. Very light weight.
- Cons: Very thin which might lead to flexing. However, if rods were attached in bundles it may help resolve this.
- Price:
- Pros: Light plastic with fast design time
- Cons: Week connections, still heavier than carbon fiber,
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