DIY insinkerator - how to cut the sink hole?

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Batman

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#121012 20-Jun-2013 23:19

Hi, not sure why i'm looking upgrading everything, but I want to install an insinkerator brand waste disposal. It needs a bigger hole to insert the attachment thingy ... is it possible to cut a bigger hole in my old 90s sink?

What tool would I use?

Thanks

Bung

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#840694 21-Jun-2013 00:41

You need a tool like a chassis punch that cuts the larger hole and forms the recess.

http://www.hirepool.co.nz/Hirepool-Equipment/Equipment/Builders,-Plumbing---DIY/Waste-Master-Cutters/WASTEMASTER-CUTTER

or take the sink to a plumber.

PS pace yourself.

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#841845 23-Jun-2013 08:45

hmm ... so the sink needs to be removed from the kitchen oh dear (my sink doesn't sit on the kitchen bench it seems to be "inside" the kitchen bench

tdgeek

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#841849 23-Jun-2013 08:57

joker97: Hi, not sure why i'm looking upgrading everything, but I want to install an insinkerator brand waste disposal. It needs a bigger hole to insert the attachment thingy ... is it possible to cut a bigger hole in my old 90s sink?

What tool would I use?

Thanks

For the time, possible fitting or leak issues, any cost in buying or hiring the right cutter tool, I would suggest to buy a sink with the correct hole. Or put the time into cutting out the kitchen bench for a nice double sink. Thats a better upgrade IMO

Batman

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#841857 23-Jun-2013 09:17

I think we'd wait for a new kitchen reno :D thanks

I can cope with blocked U pipe every now and then :D

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#841904 23-Jun-2013 11:23

Have you heard of composting?

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#841918 23-Jun-2013 12:41

educate me?

coffeebaron

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#841936 23-Jun-2013 13:46

Put all food waste in a corner of the garden. Let it break down. Feed your vegetable garden :)

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#841967 23-Jun-2013 15:29

You buy a sink with the right sized hole. Would not recommend cutting a hole in an exsiting stainless steel sink

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#842005 23-Jun-2013 17:34

It is possible to do with the sink in place but "When being used in a sink with a Formica top, care must be taken that the cutter is not twisted, this could pop the sink out of the bench."

I had my second sink basin plug hole enlarged while I refinished the benchtop. I took it to the local sheet metal factory. Later found that they didn't have the tool and borrowed one from a plumber to do my job. The only problem with an existing sink is that it is likely to be a heavier gauge stainless which is harder to cut. Modern sinks are such light steel that I've found that a leak in one was where the point of a dropped knife had poked a hole in the basin.

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#842009 23-Jun-2013 17:49

coffeebaron: Put all food waste in a corner of the garden. Let it break down. Feed your vegetable garden :)

except meat, bones and fish.

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#847672 1-Jul-2013 12:56

Waste disposal units are useless. You may as well just chuck it in the bin. It all ends up in landfill anyway.

Agree with the above, compost/worm what you can and just throw the rest out.

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#847678 1-Jul-2013 13:00

Haha not if you are lazy to stop crap going down the sink hole. But yes we will be a bit more hard-working. Thanks.

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#847689 1-Jul-2013 13:27

Can't help but think of this when reading your thread title:

You part starts at 2.23 in