Tombstone Tribute 3D Printed 1lb. Combat Robot

Since I already had my favorite Battlebot (Bite Force), I wanted to make his rival Tombstone. Please be careful, the weapon blade is much larger and more dangerous on Tombstone that it is on Bite Force. Only spin it up in a testing box please. I did this in PLA and also tried ASA. Check the rules concerning what filaments types you can use in your local competitions. This is a clamshell type model where you print 2 identical versions of the shell and they “sandwich” all the internals inside.

You can go with either thin or thick foam tires here, it’s really a personal preference. As far as diameter, it depends on how much tilt you want to the bot vs. how much ground clearance you want.

The “bottom” shell gets printed twice and is used as both the bottom and top shell. Also, much like the Bite Force model, the entire clamshell design requires the use of hex standoffs inserted in the corners and then secured through each shell with 6-32 button head machine screws.

 https://www.mcmaster.com/91780A127

 https://www.mcmaster.com/97763A328

Lastly, the power switch and the led holder are held in place by metal or plastic rods/sticks that are glued into the bottom shell and go up into the top shell. I use the slim end of an aluminum rivet but have used stripped copper house wire, filament, tooth picks, whatever you have that fits the holes of the Fingertech power switch.

The shells and the weapon are designed to use the Fingertech F2822/17 weapon motor W/ 4mm shaft.

https://www.fingertechrobotics.com/proddetail.php?prod=F2822-17-4mm

I use a bronze/oillite bushing to center the top of the motor to the top shell.

https://www.mcmaster.com/6659K65