I used to burn the holes in using a soldering iron with a box fan above my head in a cellar window. You had to in the days of the brittle hard plastic tubs. But with the softer plastic boxes like Sterlite I find using the Unibit a lot faster and it makes a clean neat hole. Very proffessional looking and you can go for several size holes with the same tool. It's made specifically for plastic and wood to give a crisp clean hole and you can get them at any lowes,home depot etc.

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