Bearing Block for FIRST Robotics Competition

We are Ghost, a robotics team from Eindhoven, The Netherlands, and we participate in the FIRST Robotics Competition (FRC). The FRC is an international competition in which 3500 teams worldwide get 6 weeks to build a robot according to game-specific rules and assignments.

Every year is a different game, but what stays the same is that every year you play matches 3 versus 3, each match lasts 2.5 minutes and the alliance (one of the 2 teams of 3) with the most points at the end of the match wins.

This year we have to design, produce, assemble, and program a robot for the following game

For this game we decided to make an elevator to move the mechanism we will score with upwards. To do this we designed blocks that hold bearing for our aluminum profiles to slide upwards in a guided way. See the following short for a prototype using 3D-printed PLA bearing blocks

https://www.youtube.com/shorts/2fLP4z8Y7eg

However, 3D-printed parts can't withstand the force required to move our elevator, thus we conclude we will need to make the bearing block from a stronger material. We looked into a multitude of options but like CNCing them from aluminum the most.