I recently discovered an error in my design for the River House stairs. The lag screws anchoring the cleats that will support the upper section of each flight are too close to the edge of the framing members that they are secured to. Even though they would most likely hold as located, I would prefer to have a massive safety margin for something this important. As such, I redesigned the cleats to use a much higher anchor point and added some alignment features while I was at it. While at Formlabs this week for my consulting work, I had lunch with Maya. When I explained the delay this would introduce to the project she offered to help me fabricate them on the company’s waterjet (a machine that cuts sheet metal using a thin stream of high pressure water infused with abrasive particles). Luckily, I had the perfect size sheet of leftover steel from the retaining wall so did not even have to purchase new material. Maya and Owen took my new design file and setup the machine to cut 9 identical pieces and I babysat the operation for the 2.5 hours it took to complete. I have now added a waterjet to my list of machines I would love to own. It is so amazing to go from a CAD file to finished parts in a couple of hours. The stair construction is now back on schedule.