DISCLAIMER: THE WIKI IS NOT PROMOTING DUPLICATION OF ANYTHING IN ANY POSSIBLE WAY, THIS PAGE IS FOR INFORMATIVE PURPOSES ONLY, DUPLICATION CAN LEAD TO A BAN FROM LUMBER TYCOON 2 OR A SLOT WIPE BY DEFAULTIO, WE ARE NOT RESPONSIBLE IF YOU ARE CAUGHT DUPLICATING, YOU HAVE BEEN WARNED.
Item Duplication, known as "Duping", "copy", or simply "Duplicating" as some like to call it, is the Lumber Tycoon 2 glitch which allows players to duplicate an item or wood via glitching their inventory or base to do so. Item Duplication lowers the value of rare items in the game and can cause an economic crash in the trading system for the game. Defaultio has attempted to patch duplication multiple times.
Types of Duplication
Axe Duplication is the most common type of duplication among players, in which this duplication usually gets patched multiple times throughout the Changelog, yet players constantly find new ways to do this. Axe dupes usually involve how the game handles saving. Many videos have been made to show you how to do this, but most of them get patched not even 1 week after release.
In recent updates, there is now a limit on how many axes you can hold, and the limit is debated among users.
Wood Duplication used to be known by a few people and now is spreading like wildfire across the trade system. Many users have discovered a way to duplicate planks, and sell them for ROBUX, which is against ROBLOX Terms of Service, and can lead to severe consequences. It's unknown as to if Defaultio will do something about this, but most speculate he will.
Videos of this method able to be still found around the internet, but due to it's difficulty to perform, players have thought this duplication method was patched.
Loose Item Duplication
Loose Item Duplication is/was a type of duplication in which players can duplicate items such as gifts, boxes, or other event items that you cannot save into your inventory, but rather on your base. The form of duplication was described as difficult, and can still be done as of January 18th 2017, this method is done by the use of a laggy server (and saves).
The reign of this type of duplication is believed to patched, and it's duplicated items are now spread across the trade system. It's unknown as to how many gifts/boxes have been duplicated.
There is a way to duplicate items like this by having two players. It is a save overwrite glitch. A possible way to patch this is to close menus when overwriting.
Cash Duplication is a duplication that usually involves the function on how the game saves and sending money to other players. Because of this, many people can be seen having millions in cash and max sized bases. People have been known to sell their in game cash for ROBUX (which is illegal) as it is the easiest thing to transfer in the game.
Suspensions & Bans have been reported and issued by Defaultio and the Game Administrators to ban those who have duplicated, or have been caught in the act of duplication. It's quite clear that Defaultio doesn't want users to duplicate, but the players refuse to take heed and receive consequences such as a permaban.
If Defaultio (or any player that records these act) catches you in-game, and even if you leave, you will still be caught. Beware of the consequences of duplication.
Above: A user caught duplicating by the system, and received a message from Defaultio. Possibly receiving a ban.