Kindly note that:
1.If the drill bits required are not available or the hole in the wood is too large, use the next larger bit and wrap a strip of masking tape over the metal to fill up the space for a snug fit.
2.When trimming the ends of a blank with the barrel adhered inside, use minimal pressure and raise and lower the barrel trimmer frequently to prevent the trimmer from burning the end of the blank and darkening or discoloring the wood.
3Hard, resinous woods, like those of the rosewood family, tend to burn easily if you trim too quickly. ·Trim for a second or less and back the trimmer out of the hole to check the depth of cut. Don’t drill too deeply and cut into the brass.