Tinkers Construct is mod in the in the Feed The Beast Beta pack. This mod allows you to create your own tool with different meterals such as iron, or a new meterial called Blue Slime. Create different tools like, a pickaxe, a sword, an axe, or a shovel. TinkersConstruct is currently in the FTB Beta Pack, which is currently a private pack. I will not be giving out the code I will be making a wiki of this mod late in the year.