I have the IKEA EKET cabinet with 2 drawers under my TV and EKET base for the cabinet was around 6-7 cm high so my vacuum cleaner robot Roomba could not go under it to fetch all the dust that gets caught there.

I made 4 "extenders" for the cabinet base legs, that once printed didn't require any additional tools to be mounted, as every leg go directly in the hole of the extender and stays there :). This extends your legs for 3cm, which was more than enough for me.

The fit is pretty good, so there's no wobble and you'll probably need to put some pressure into mounting extenders to legs can they go all the way in. However that should be pretty easy as when you put all 4 extenders on legs the gravity helps a lot 🙂.

I went with 40% infill because I wanted the extenders to be pretty strong, but you could do it probably with less than that as now that it's all done I can see that it was definitely an overkill.

The cabinet is still sturdy, and extenders can withstand the weight quite nicely. I used white PLA so it follows the design of the cabinet perfectly.

I would say this is a total win for me and my Roomba can now go and fetch all the dust under the cabinet. Hope someone else finds it useful!