Limit switches and drag chains

1. X and Y endstops

Attach the X and Y limit switch with little connector plates to the X and Y C beams so that the moving elements can touch them:

https://www.myminifactory.com/fr/object/3d-print-queenbee-x-endstop-mount-145071

2. Z endstop and drag chain

And attach the mounts and Z limit switch and drag chains as pictures here:

https://www.myminifactory.com/object/3d-print-queenbee-x-moving-drag-chain-mount-with-z-endstop-integrated-144764

3. Y drag chain

Attach the Y drag chain as pictures here:

https://www.myminifactory.com/object/3d-print-queenbee-y-drag-chain-mounts-144774