Open your slicer and import the Big Storage Box K1 model
Set the unit to millimeters
Orient the box flat on the build plate with the largest base down
Scale only if needed, keeping proportions locked
Add enough wall thickness for strength
Set infill to a moderate level for a storage box
Increase top and bottom layers for durability
Enable supports only if the model has overhangs that require them
Use a brim if bed adhesion is a concern
Choose a layer height suitable for your printer and desired finish
Slice the model and review the toolpath
Save the G-code to your printer media
Level the bed and clean the build surface
Load the filament and preheat the printer
Start the print and monitor the first layer
Let the print finish without moving the part
Remove the box carefully after the bed cools
Trim any support material or brim if used
Test the lid or fitment if the box has separate parts