been thinking about doing this...man it would save big bucks..i have a friend with the same saw.....so cost of the chain reel could be split....what tools are needed?...and is it hard?...any videos on the net?..i searched and didnt find any.....just looked at baileys woodland pro reel 25 feet would yield 16 chains at 6.16 a chain...i usually pay 6.00 to have my chains sharpened.