It is important to refer to the drill's manual or diagram when putting it back together. If you do not have access to these, take pictures or notes of the disassembly process to help guide you.
The tools needed will depend on the type of drill, but typically you will need a screwdriver, pliers, and possibly a wrench for larger pieces. It may also be helpful to have a workbench or sturdy surface to lay out the pieces.
If a piece breaks, you may need to purchase a replacement part or contact the manufacturer for assistance. It is important to carefully handle the pieces and avoid using excessive force when reassembling the drill.
It is recommended to use a lubricant specifically designed for power tools. Avoid using household oils or WD-40 as they may damage the internal mechanisms of the drill.
The time it takes to reassemble a drill can vary depending on the complexity of the model and your level of experience. On average, it can take anywhere from 30 minutes to an hour to put a drill back together.