Plenty of good info to read from folks who have built them like link above and others. Do some reading. I say go for it 'if' 1: you known how to build, repair and fix saws & 2: if you have other saws you can use if the China 660 let's you down. As someone who uses saws to make a living, I'd never rely on one saw or a copied one made in China. A knowledgeable builder can make a decent saw out of them, the average Joe is a bit hit and miss.