[1.6.4] Making a item get damaged once crafted

Here is what I have so far:

 
public class ItemWelder extends Item {

public ItemWelder(int par1) {
	super(par1);
	this.setCreativeTab(CreativeTabs.tabBlock);
	this.bFull3D = true;
	this.maxStackSize = 1;
	this.canRepair = true;
	this.setMaxDamage(128);

}

  

}