I'm offering the build instructions as a purchase option for those who would like to build it for themselves, have someone else build it for them, or build it to gift to a family member or friend. Be warned though, building it yourself will spoil the solve! (For personal use only!) If you already purchased the prebuilt puzzle box then there is no need to buy the instructions separately, they are included with the purchase.The build instructions are in PDF format and once purchased will b...