The canister alignment clamp fits snugly around the 3D printer and laser canisters and, when tightened, holds the tool head at the user-adjusted level within the gantry. The clamp allows you to remove the 3D Printer from the gantry without resetting your nozzle height.
All BoXZY laser engravers come with the canister alignment clamp preset to the proper focal length. BoXZY V1.3s include this clamp on the 3D printer, but BoXZYs produced before the V1.3 do not. You can easily add it on to models produced before the BoXZY V1.3, which do not include the clamp on the 3D printer.
To see how to set the canister clamp height, check Step 3 in our 3D Printing with BoXZY guide. The clamp will also come with a set screw to replace the screw that triggers the limit switch along your Z axis. If the screw is not replaced, you will be unable to use the clamp with your BoXZY.