About 4 Jaw Chuck
If you work with lathes, then a 4-jaw chuck is an essential tool to have in your arsenal. As opposed to a 3-jaw chuck, you maintain better grip on a round stock, you can work off-centre, and you can centre it with high precision. Additionally, it can hold square and rectangular blocks, as well. Look for new, used, and refurbished lathes on eBay. Some Top-rated Sellers may even provide free shipping to save you more money on your purchase. Do not get stuck in the middle with a 3-jaw chuck. Upgrade to a 4-jaw chuck so you can drill off-centre holes with your lathe, as well.