Tool For Cutting And Recessing Drain Holes

[marvoni]

I'm looking for a hole cutter or hole punch that you would use to cut a hole in a stainless steel sink for the waste to install into. Standard hole punches between 40 and 100mm for use with a hydraulic hand tool are available but I need a punch that makes the recess as well or a separate dimple/flare type former to make the recess after the hole is cut so the waste fitting doesn't sit proud. I've scoured my tooling catalogues and the internet but I'm not sure what this type of punch is officially called or where I might source them.

It's actually for a project that involves us installing stainless steel drain trays under air handling units. There about 60 trays of various sizes that will need to be custom made using 0.7mm or 0.9mm 304 stainless and each tray needs one or more waste fittings in it.

Thanks in advance for any info.

 

[Chuck]

I'm not sure what this type of punch is officially called or where I might source them.

I think you are looking for a 'sink swaging kit'.

Is there some reason you're not getting the trays from an SS fabricator who, for example, does catering equipment and will already have one?

 

[gmartine]

Chuck is right...it could be worth the investment if the job is large enough.

 

[marvoni]

Thanks for the info.

We have a small fabrication workshop that's set up to make stainless steel enclosures and have a pressbreak machine and programmable punch machine, we just don't have the tooling to do the swaging process for the punched hole to accept a waste fitting.