Hangover Saturday, WARNING: pinch faced Church quilting bee types, salty language ahead. Say hello to 40 mm thick hard AR 400 plate. It's not something you want to drill with HSS drill bits. In the name of FUN, we put a few unwilling victims on the alter for sacrifice to Vulcan. In this totally biased review of various suppliers of twist drills, one brand came out on top. Surprisingly, some of the most expensive USA made bits from Acklands are worse than el-cheapo offshore bits from Costco. The most gorilla proof twist drill I've found is Walter. Norseman makes a good bit too. Any other bits you'd like me to test while I still have that 100 pound plate up on the mill? Like the vids? Got pocket change? You can help keep the cart rollin'! http://www.patreon.com/AvE