Sawfiler
（重定向自Sawdoctor）
A saw filer or saw doctor is a person who maintains and repairs saws in a saw mill. A saw filer's work area in the mill is called the filing room.
Saws used in timber mills are very large and expensive. They need careful maintenance for safe operation. Repair of damaged saws requires a high degree of skill. It takes many years of full-time saw filing to become proficient in the trade.