battery operated burn-in knife for hard fill sticks by mohawk finishing products mohawk finishing products <p><em><strong>no cords! no flames!</strong></em></p> <p>the battery operated burn-in knife provides a <strong>safe</strong> and <strong>convenient</strong> alternative to other hot knife tool options. use this flameless, soldering tool to melt the hard-fill and hard-fill plus sticks to fill any uneven surface flaws.</p>