Straight Shank Suitable for Fein, Wolf & Kress. HCS - Heavy Duty (Pack 5) Manufactured from high quality steels to meet the demands of most industrial and DIY applications. Supplied display carded. High teeth per inch (TPI) blades will be slower cutting and produce a better edge finish. Low teeth per inch blades will be faster cutting but produce coarse edges on the workpiece. Different materials will also give different edge finishes depending on the make up of the material and direction of cut in relation to the direction of the grain. When cutting in some metals lubricant or grease may be required to reduce friction and dissipate heat. Various techniques can be employed to prevent splintering of cut edges on wood, especially laminated materials. These include the use of an anti-splinter guard. This is a plastic insert that locates in the jigsaw baseplate reducing the gap around the blade and reducing the splinter area. Another technique is to score a guide line on the wood cre