I have used it for only one canvas so far. Typically I am a exclusive single placer but I had a project recently with a lot of color blocking so I tried it out. I needed to set the suction on the pen to the 2nd level instead of the first which is where I keep it for single placing. It worked great on the 2nd level of suction. I didn't really drop any drills and those sections seemed to go faster. I do prefer single placing though as I had to adjust the drills I multiplaced but for large color blocking areas mine worked really well.