<iframe width="580" height="385" src="https://www.youtube.com/embed/ysRhWy4lyrw" frameborder="0" allowfullscreen></iframe> <br>It's easy to drill straight holes with a drill press, but it can be a challenge to keep a portable drill perpendicular to your work piece. <br><a href="https://www.youtube.com/watch?v=ysRhWy4lyrw">source</a>
