Is it safe to adapt Ikea shelving units?

We have an Ikea shelving system in our study that my husband wants to 'adapt' to fit a disparate collection of hi-fi equipment. Is it OK to cut and add to shelving like this, or will we end up with something unsafe and unusable?

Adapting Ikea products is not for the faint-hearted. Because of the materials Ikea uses, you may end up with messy edges and you could lose some of the structure's rigidity. It may be worth getting a joiner to make it up 18mm MDF instead, or check out the range of adapted Billy shelves at Ding3000.

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