Now make sure you clean the box THOROUGHLY. I have found that using compressed air works but can make it difficult if used too soon. If you blast air into the top vein right off the bat, it will compact the chips together and take a long time to get them all out. I have found that if you use a piece of 14 guage wire (it's what I had lying around), strip back about 1/2-3/4" and fray the wires a bit, it'll work much better. If you insert the frayed wire and twist, you can grab some chips and pull them out. Do this until the wire stops @ the other end of the vein. Then blast some brake cleaner down the vein to clean the cutting oil and small particles. Then just clean the chips from the main body of the box, pull the rag on the bearings and clean some more. A flashlight will help you find ALL the chips. Once it is %100 free of chips, you can start reassembly.