Milling a bigger hole

Systems, Gear, & DIY
1

Hey hey,

I’ve got this electric brew kettle: Ølbrygning – Bryg din egen øl. Find Ingredienser og Udstyr herl

The problem is, the hole for the outlet valve is too small, and the spigot is this crappy plastic thing. I need to upgrade to 1/2" fittings (at least, I think I do) but am not sure of the best way to go about this, having never done it before. My understanding is that there’s a conical attachment you can get for an electric drill that’s supposed to ream it out to whatever you need, but I have no idea if this is the right thing, and if it is, I have no idea what it’s called. Any thoughts?

Thanks! Headed to the hardware store today to get way more copper piping than I probably need.

2

They are called Unibits or Step Drill Bits and should work well for your project.
http://www.automationdirect.com/adc/Overview/Catalog/Tools/Hole_Cutting_Tools/Step_Drill_Bits_(HSS_-a-_HSS-TiN)_-_Fractional_size

3

Thanks! Looks like they’re in stock.

cheers,
-pl