I did a lot of different things for this company, remodeling a dorm building at a major college in the Tacoma area but the window sills I did were what I'm proudest of doing there. The material for the sills was compressed material, not particle board, but perhaps a step above that if that's possible. Basically they wanted me to make sugar from, well I won't say it. The first bay window I measured and cut just happened to be put in at the exact time my Foreman and Super came in the room. I can't even describe the look on their face as the piece fit tightly around the window with less then a sixteenth inch gap. I mean it was perfect really. Their expressions were priceless and they got up as close as they could to inspect the cut and fit. Without saying a word the both just shook their head and walked out of the room. The rest of the day it seemed like all I heard was the two of them barging to others on the crew how they were shocked about me being able to fit the sills so well. I mean after all I was a lowly apprentice! lol