How to build raiser legs for chairs or sofas

Recently I got a new set of sofas and armchairs to go in my living room. They were perfect apart from one small problem – the legs were too short. By that I mean that the underside of the sofas were too close to the ground to allow my Roomba vacuum cleaner to fit underneath. As you can see from this picture, a Roomba will happily clean underneath furniture, but only if there’s enough room – in the case of my model, about three and a half inches (90mm).

I definitely wanted to make sure that my Roomba could fit underneath ...

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