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[Kate]

 Hi all.

I've bought a new composite kitchen sink and a monobloc tap. I wanted to have a go installing it myself, the problem is that the sink doesn't have a hole for the tap.

I've have a drill bit set but non of the drill bits are any good for this job due to being the wrong size and type.

Does anyone know what I should do?

I don't want to ruin the sink.

Thanks very much.

Kate

[tunnie]

Trip to Screwfix and the right tools?

Assuming the sink is the same size and a shape, so not cutting of the work top?

I'd look at the tools you need and get those, often get more use out of them and they pay for themselves like car tools 

[Kate]

The new sink is a bit bigger but I've got a jigsaw.

Is there a special drill bit for composite sinks?

[tunnie]

I've never cut through one, but surely just one right diameter should be enough?

When cutting plastic bumper for my LPG filter I just looked for the right size.

[Andy B]

Hi all.

I've bought a new composite kitchen sink and a monobloc tap. I wanted to have a go installing it myself, the problem is that the sink doesn't have a hole for the tap.

I've have a drill bit set but non of the drill bits are any good for this job due to being the wrong size and type.

Does anyone know what I should do?

I don't want to ruin the sink.

Thanks very much.

Kate

I'd imagine you need to use a hole saw. They come in all kinds of sizes http://www.ebay.co.uk/sch/i.html?_trksid=p2047675.m570.l1311.R4.TR12.TRC2.A0.H0.Xstarret&_nkw=starrett+holesaw&_sacat=0&_from=R40

[Marks DTM Calib]

My advice would always be dont buy a composite sink but, as you have one then you need a hole saw of the correct diameter.

[martin42]

Need a hole saw for sink,there should be a moulding mark on the underside,pilot drill the center firsts then use hole cutter,also when cutting hole for sink,place masking tape around the hole and mark around sink if you dont have a template with it and cut 10mm inside the line,masking tape also protects the worktop when using jigsaw.if you need any more advice pm me 

[Bigron]

Andy beat me to it in recommending a hole saw, Kate, but sometimes Lidl/Aldi do boxed sets of hole saws for a very reasonable price; you just need for them to be offering them in their "specials" when you actually want them.

Ron.

[Kate]

Thanks for all the advice.

I'm going to go to Screwfix to get a holesaw. I've never used one before. So I need to drill a pilot hole first for this? Would a wood drill bit do for that?

[Kevin Wood]

Thanks for all the advice.

I'm going to go to Screwfix to get a holesaw. I've never used one before. So I need to drill a pilot hole first for this? Would a wood drill bit do for that?

The holesaw will normally have a drill bit in the centre of the mandrel that holds the cutter, so you can use that.

[tunnie]

This is what they usually look like Kate, the drill bit is included and screws into the holesaw 

[Andy B]

Thanks for all the advice.

I'm going to go to Screwfix to get a holesaw. I've never used one before. So I need to drill a pilot hole first for this? Would a wood drill bit do for that?

Have a practice on a piece of wood first then. Drill nice & slowly and let the saw do the work, you don't need to lean on it. I would drill through from the back/underside first to get the position right, saw half way though, & then finish off from the other side so that it doesn't splinter on the visible surface.

[Phil]

Resin or stone composite?

Assuming resin

Forstner bit or flat bit

If its stone then it will need a carbide tipped drill bit

[Kate]

Thanks.

I got one from Screwfix, the guy there was really helpful and found the two parts for me.

This is the sink;

http://www.ebay.co.uk/itm/380892473626?ssPageName=STRK:MEWNX:IT&_trksid=p3984.m1439.l2649

[Kate]

Resin or stone composite?

Assuming resin

Forstner bit or flat bit

If its stone then it will need a carbide tipped drill bit

I'm not sure about that.