I found this while searching for a S&F Calculator, hope it works
<a class="cpn_l" href="http://www.custompartnet.com/calculator/milling-speed-and-feed">Milling Speed and Feed Calculator</a>
<script type="text/javascript" src="http://www.custompartnet.com/gembed/milling-speed-and-feed.js"></script>
<a class="cpn_l" href="http://www.custompartnet.com/calculator/milling-speed-and-feed">Milling Speed and Feed Calculator</a>
<script type="text/javascript" src="http://www.custompartnet.com/gembed/milling-speed-and-feed.js"></script>