My first proper metal RBS. It was made using stainless steel and a soldering iron that I got for Christmas (It was on offer for £9.99!). Turned out nicely. Lasts just under 6 seconds and is just under 15cm. I didn’t sand the joins as I went along which means there are brown marks and some of the track is a bit wobbly but it is very reliable (no drops) and got me back into the way of making them. While I was in university accommodation it sat on my desk, ready to distract me whenever I needed to get some work done.