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Forums › Home Workshop DIY › DIY insinkerator - how to cut the sink hole?


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Topic # 121012 20-Jun-2013 23:19
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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

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  Reply # 840694 21-Jun-2013 00:41
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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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  Reply # 841845 23-Jun-2013 08:45
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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

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  Reply # 841849 23-Jun-2013 08:57
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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



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  Reply # 841857 23-Jun-2013 09:17
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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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  Reply # 841904 23-Jun-2013 11:23
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Have you heard of composting?




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  Reply # 841918 23-Jun-2013 12:41
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educate me?

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  Reply # 841936 23-Jun-2013 13:46
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Put all food waste in a corner of the garden. Let it break down. Feed your vegetable garden :)




Chorus has spent $1.4 billion on making their xDSL broadband network faster. If your still stuck on ADSL or VDSL, why not spend from $150 on a master filter install to make sure you are getting the most out of your connection?
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Need help in Auckland, Waikato or BoP? Click my email button, or email me direct: [my user name] at geekzonemail dot com

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  Reply # 841967 23-Jun-2013 15:29
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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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  Reply # 842005 23-Jun-2013 17:34
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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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  Reply # 842009 23-Jun-2013 17:49
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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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  Reply # 847672 1-Jul-2013 12:56
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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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  Reply # 847678 1-Jul-2013 13:00
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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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  Reply # 847689 1-Jul-2013 13:27
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Can't help but think of this when reading your thread title:



You part starts at 2.23 in Wink

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