The metal guideblocks that come standard with most bandsaws can create blade-damaging heat and friction or can damage the teeth. Aftermarket graphite and ceramic guide blocks work well, but before you buy, consider making your own blocks from any dense hardwood, such as maple. Like the blade-friendly graphite, hardwood guides can be set against the blade without risk of damaging the teeth or tooth set. When worn, hardwood blocks can be sanded or trimmed true.
After cutting the blocks to fit, I stand them in a small container with some WD-40 to allow the end grain to absorb extra lubricant.
