I don't think 3D printing is quite there yet for BattleBots. Too weak, strong and simple wins the fight. There was an article posted a few days ago about a steel 3D printer, and I've also seen a Kevlar printer, but these aren't widely available yet.
.//edit
Here's another Tested video about a Carbon Fiber/Kevlar composite printer. https://www.youtube.com/watch?v=RiPQpiE4_qY
Depending on how you layer the materials you can make a very ridged form which is stronger than steel.
I don't think 3D printing is quite there yet for BattleBots. Too weak, strong and simple wins the fight. There was an article posted a few days ago about a steel 3D printer, and I've also seen a Kevlar printer, but these aren't widely available yet.
.//edit Here's another Tested video about a Carbon Fiber/Kevlar composite printer. https://www.youtube.com/watch?v=RiPQpiE4_qY Depending on how you layer the materials you can make a very ridged form which is stronger than steel.