Choosing by size Without any auxiliary extensions, a jointer can comfortably handle lumber about twice as long as the bed, so bed length, along with blade size, dictates the size of material the tool can process. The smallest size useful to most woodworkers is the 6-in.Click to see full answer. Also to know is, should I buy a 6 inch or 8 inch jointer?Yes, the 6 inch will work with more work. But the 8 inch will have a longer bed and that is the main reason I would buy an 8 inch. Also after you joint a 6 inch board, you will have to rip it on the TS and will probably end up with a board less than 6inch.Beside above, do I need a jointer and a planer? In a sense, no you do not need both a jointer and a planer. (Not any more than you need both a table saw and a circular saw). However, unless you’ve mastered the art of hand-milling, the only way to ensure of 100% square, co-planar lumber is to use both tools. In this manner, do I really need a jointer? You won’t need a jointer and a planer, but you do need something to smooth the top with. You could use a hand plane or a belt sander. I have used a powered hand planer with some success. You won’t get perfect results, but it will work.How much does a jointer cost?The cost savings works out to approximately $5 per board. If I spend $3000 to buy a jointer and planer, it will take 600 boards to recover the cost.

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