Universal keg cutting jig - Home Brew Forums

Register Now!
Home Brew Forums > Home Brewing Beer > DIY Projects > Kettles, Mash Tuns & Hot Liquor Tanks > Universal keg cutting jig

Reply
 
Thread Tools
Old 10-18-2013, 06:30 PM   #1
nebulous
Recipes 
 
Mar 2013
Orlando, FL
Posts: 108
Liked 15 Times on 13 Posts



In my stimulus-overload of a search across these forms, I have yet to find a simple jig for cutting the bottom off a keg.
I had a few simple criteria to accommodate when I was trying to tackle this problem.
I really wanted as close to a perfect circle as I could get. I didn't want to have to try and drill a hole in the center of the bottom of the keg. And I didn't want the grinder to be able to get away from me no matter what.
Although my amazing girlfriend had scored me some kegs; I pondered the issue of cutting off the bottoms for a few months (knowing that I wont get everything together for my full rig until the end of the year). It was not until I was cleaning the garage that I noticed these triangular pieces in my cut-off bin (if you dont have one, start one). 4 of these should be able to trace the outer circle of the keg easily.




With that I built a capital I shape out of more scrap wood, on to which I mounted the triangles. I used a thin strip on the bottom of the triangles to make them more ridged

When I mounted the triangles I left one of the four with only one screw in it.
This was so that I could make a slight adjustment on how the jig fit the keg since both my kegs were dented and not perfectly round.

The other thing that played in to my favor was the harbor freight cheap-o angle grinder. There are two loops/triangles in the cast housing of the tool that are perfect for mounting to.

A steel mounting bracket from an old curtain rod, after some slight modification, became the mounting point for the angle grinder.


The bolts and wing-nuts were found in a jar somewhere.
I had to create a spacer for the wing-nuts since they could not screw down all the way. I used an aluminum tube that I believe came from a tent.

here is the whole mounting bracket disassembled and assembled.


I had to add a piece of scrap to the jig to get the grinder to the correct height off the keg. You want about 1.5inches from the keg ring to the mounting plate.


I also taped some reflectex to the underside of the jig, and greased the ring of the keg where they touched; these both gave it some give and allowed it to slide.
And then I just let it rip.




while not prefect i got pretty damn close to a 13" cutout all round. After hitting the one keg with a 80grit flap disk and medium gator pads its at 13.5" diameter.
I hope this helps out some people on here and for those that are wondering what i have been doing with the cut out, here's what i've got so far, just waiting on more cutting disks.
__________________
Keg: air
primary: air
-
Universal Keg Cutting Jig

Stealthcruiser Likes This 
Reply With Quote
Old 10-18-2013, 06:42 PM   #2
lagisforeplay
Recipes 
 
Mar 2012
Albuqerque, New Mexico
Posts: 18
Liked 2 Times on 2 Posts


Very nicely done. I am still in debate whether which end to open in my kegs.

nebulous Likes This 
Reply With Quote
Old 10-18-2013, 06:48 PM   #3
brew4thewife
HBT_SUPPORTER.png
Recipes 
 
Feb 2012
Faison, NC
Posts: 23

Pretty slick!

 
Reply With Quote
Old 10-18-2013, 07:21 PM   #4
Stealthcruiser
HBT_SUPPORTER.png
Recipes 
 
May 2013
Cotacachi, Ecuador, Formerly, Atlanta, Ga.
Posts: 2,433
Liked 249 Times on 223 Posts


I like it!

Put some shoes on!........

Here's how I did mine, so I would not have to index off of the dented up ring...........It's towards the bottom of the post.

http://forum.northernbrewer.com/view...?f=29&t=114559
__________________
Corned Beef............The other pink meat.

nebulous Likes This 
Reply With Quote
Old 10-18-2013, 08:57 PM   #5
lagisforeplay
Recipes 
 
Mar 2012
Albuqerque, New Mexico
Posts: 18
Liked 2 Times on 2 Posts


Forgot to ask: where and what are you using to connect to the "neck" to get the liquid out?

 
Reply With Quote
Old 10-18-2013, 09:06 PM   #6
nebulous
Recipes 
 
Mar 2013
Orlando, FL
Posts: 108
Liked 15 Times on 13 Posts


Quote:
Originally Posted by lagisforeplay View Post
Forgot to ask: where and what are you using to connect to the "neck" to get the liquid out?
The neck of a sanke is the same size as a 2" sanitary fitting, so they mate up nicely with many different industry standard fittings.
__________________
Keg: air
primary: air
-
Universal Keg Cutting Jig

 
Reply With Quote
Old 10-06-2015, 10:41 AM   #7
AlfA01
...it ain't sold in heaven...
HBT_SUPPORTER.png
 
AlfA01's Avatar
Recipes 
 
Jun 2014
Athens, Greece
Posts: 169
Liked 17 Times on 14 Posts


Quote:
Originally Posted by nebulous View Post
The neck of a sanke is the same size as a 2" sanitary fitting, so they mate up nicely with many different industry standard fittings.
Nice. I'm planning on doing my fermenters this way, but not a 13" cut--I have 3" sanitary fittings that I have seals and caps for. I want to weld the sanitary fitting to the keg and have the caps drilled to accept an airlock and bung to make it airtight. Or, I may order 5 or 6" assemblies to allow for easier cleaning, as I'll actually be able to get my hand inside.

I'm thinking that a ball valve on the bottom (previous top) of the keg would do wonders for draining the keg. I have 1.5" ball valves, but I also 2" to 1.5" reducers that I ordered from AliExpress for my ethanol still.

I was also thinking to put them on legs with rollers. We have a place here that makes fireplaces, stoves, spiral staircases, balcony railings and gates. From welding to having SS tubing in-stock, they have just about everything I need to get these kegs turned into proper fermenters. Best part is, the owner's son is big beer fan, so I can a lot of work done for very cheap!

Cheers,
AlfA01
__________________
"Fast is fine, but accuracy is everything." Xenophon

"We must free ourselves of the hope that the sea will ever rest. We must learn to sail in high winds." Aristotle Onassis


Keg 1: Krispy Kolsch and a Biscuit
Keg 2: Hoppy Dark Mexican Lager
Keg 3: Dogfish 90 Clone
On Deck: Vienna Lager and Imperial Stout

 
Reply With Quote
Old 10-06-2015, 11:01 AM   #8
rekoob
HBT_LIFETIMESUPPORTER.png
 
rekoob's Avatar
Recipes 
 
Feb 2011
Norfolk, VA
Posts: 1,421
Liked 107 Times on 82 Posts


Nice job, looks good.
__________________
Na Zdrowie!

 
Reply With Quote
Reply
Thread Tools


Similar Threads
Thread Thread Starter Forum Replies Last Post
CO2 tanks universal? dttk0009 Bottling/Kegging 14 02-12-2013 12:52 PM
Universal Mill? Should I get it? buzzno Equipment/Sanitation 2 02-01-2013 01:20 AM
**What is the most universal HOP** BradleyBrew Recipes/Ingredients 13 02-07-2011 04:41 PM
Anyone using a Universal Model 500? Gunshow All Grain & Partial Mash Brewing 2 07-06-2009 02:35 PM
Universal Healthcare vs. Universal Foodcare TxBrew Drunken Ramblings and Mindless Mumbling 29 11-21-2007 09:53 PM


Forum Jump