How to enlarge overflow hole in acrylic bath

[Tony]

Hello All,

I have a new acrylic bath, unfortuantly the hole for the overflow is about 3mm too small. Does anyone know what the best way would be to enlarge the hole?

Thank you,

Tony

[Vortex7]

Use a Dremel or similar "multitool".

[Frank Erskine]

Angle grinder.

[Tim Watts]

Probably a "diamond" file, half round. The sort of thing tilers use - the bigger coarser type rather than the needle files. Be careful though

- only apply strokes *into* the hole from the finished side or you risk chipping the finish off.

3mm wouldn't be to hard to take off carefully.

[Nightjar]

I would use a taper reamer, working from inside the bath.

Colin Bignell

[John]

Taper drill or small flapwheel.

Can't you get a overflow fitting that will suit?