I won 10' of table top roller chain on ebay a while back for 50 dollars (including shipping to Alaska). Normally this chain is used for conveyor belts, I was thinking it could be put to another use. A wonderful new track :)

Well, it arrived today. I used a 'C' Clamp and a 5/8" nut, along with a chain breaker tool to build two tracks with it . The nut is used so that you can use the 'C' clamp to press the pins back into place without resorting to the use of a hammer. I also used some wheels to see how it "felt" in the shape that I want as well as tested how much force it would take to move such relatively heavy track. The motors I have should move it with no problem.

The chain is larger, 1864EAK3 made by Rexnord. Each track is made using a 3.5 foot section of chain, with 3 feet of chain left over for repairs or other uses later.

I know it isn't a totally 3D printed solution, but I like looking at all the options :)

Pros:

• Doesn't twist
• Easy to work with and repair
• Very solid
• Much faster than 3D printing a solution
• Looks amazing
• Heavy - moves the center of gravity down for more stability

Cons:

• Heavy - requires strong motors
• Can be expensive if you do not shop around

That's it for this 5 minute update :)

Cheers!