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idahobrew 03-31-2012 05:06 PM

Drilling holes in bucket lid
I've got some standard size grommets coming in the mail today from my brew supplier. What size drill bit do I use to drill the hole in the bucket lid? Making 2 fermenters on the cheap. Thanks!

Sparky 03-31-2012 05:13 PM

Not sure what material the bucket lid is made of, but I will assume plastic.

I don't know the exact size of your grommet, but you can easily make the appropriate size by using a step-bit. Just go slow and easy, and you can check it as you go along to make sure you get the right size.

I did the same when enlarging the hole to accomodate for a temperature control grommet.

Budzu 03-31-2012 05:17 PM

If you don't have a step bit, take your drill bits and select the one that is just slightly too large to fit cleanly through the hole in the grommet. When in doubt, drill too small, test fit, then step it up if needed.

paparker21 03-31-2012 11:57 PM

measure the ID of your grommet, add 1/8" and you should be REALLY close to what you need.

iaefebs 04-01-2012 02:20 AM


Sparky 04-02-2012 06:00 PM

2 Attachment(s)
Here you go, photos below. I enlarged mine to fit a thermowell in my bucket to temperature control the primary. Works great. FYI, (good) step bits are not cheap, but do a perfect job.

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