Originally Posted by
Bear
They're simply designed different due to having different uses. Screwdrivers are designed to turn, and chisels for blunt impact. Better chisels usually have a full length shaft with a full strike on the end, and the handles are usually considerably larger than screwdriver handles, no doubt to give most people a better chance of hitting the strike instead of their hand ; ) The strike isn't hardened as much as the point so not to throw sparks when hit with a hammer, but glasses are still mandatory if you appreciate your eyesight. Cold chisels are tempered the same way (hardened point, softer strike) and are intended to be used with both glasses and gloves
They're also usually made of an impact resistant resin or hardwood with steel banding on the top and bottom to keep it from cracking/splintering.
Like these old Stanleys
http://i.ebayimg.com/00/s/MTIwMFgxNj...S1a0z/$_12.JPG
If you're going to go the screwdriver route, usually the ones with the rubberized/not-plastic composite handle are better for banging on. Just don't whack too hard, an off-center strike will bounce the hammer. The material also tends to not mush out (?). They will cost you a few dollars up front, but I have a 12" flathead that I've used as a prybar, beater bar, awl, etc. and that sonofa***** is still kickin.
And definitely stay away from any that seem very light and/or have visible seams down the handle.
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