Safety razor steel blades remain in limited production for lower income markets. Because Gillette held a patent on stainless blades but had not acted on it, the company was accused of exploiting customers by forcing them to buy the rust-prone blade. The risk of injury from handling razor blades was further reduced in 1970 when Wilkinson released its "Bonded Shaving System", which embedded a single blade in a disposable polymer plastic cartridge. A flurry of competing models soon followed with everything from one to six blades, with many cartridge blade razors also having disposable handles. Cartridge blade razors are sometimes considered to
Straight razor bumps". One of the recommended actions for those so affected is to switch to single blade use. Others simply like the good results and the satisfaction of maintaining the blade themselves. Yet others cite aesthetic reasons in addition to the practical ones. A well-made blade, in a nice handle with a well-crafted etching and decorated shank, carries a sense of craftsmanship and ownership difficult to associate with a disposable blade cartridge. Finally, a well-kept razor can last for decades, and can become a family heirloom that can be passed from parent to child. For all of these reasons, devotees of