The XP Bottler is a block from the OpenBlocks mod. This block is used to automatically create Bottles O' Enchanting out of liquid experience and Glass Bottles. Liquid experience can be automatically pumped into the XP Bottler by toggling Auto Drink in the GUI, then selecting the desired side to auto drink from by left clicking that face. Glass Bottles can be automatically extracted from an adjacent inventory into the XP Bottler by toggling Auto Extract in the GUI, then selecting the desired side to auto extract from by left clicking the according face. The same functionality is available for automatically ejecting the Bottles O' Experience that are created. The XP Bottler can be rotated within the GUI by holding the right mouse button and rotating the block.
