Author Topic: Cutting the bottom off of a Better Bottle  (Read 1462 times)

Offline yso191

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Cutting the bottom off of a Better Bottle
« on: September 21, 2014, 03:30:28 AM »
I want to use an old Better Bottle carboy for a hopper on my new JSP grain mill.  Has anyone had any luck or have any advice on this? 

Honestly at this point I think I'd shred it if I tried cutting it with anything I have.  My best guess is to use a torch to cut the bottom off.
Steve
All Hands Brewing
BJCP #D1667

Offline Stevie

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Re: Cutting the bottom off of a Better Bottle
« Reply #1 on: September 21, 2014, 03:37:35 AM »
My first thought is a dremel. Wrap a length of masking tape along where you want to cut and use a cutting disk. I'm sure a few passes with a very sharp razor blade would do fine as well

Offline klickitat jim

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Re: Cutting the bottom off of a Better Bottle
« Reply #2 on: September 21, 2014, 03:44:13 AM »
+1 on using a small thin cutting wheel. Knives or reciprocating will likely not work well. I did a bunch of plastic cutting when I built that greenhouse. Its easy to shatter

Offline erockrph

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Re: Cutting the bottom off of a Better Bottle
« Reply #3 on: September 21, 2014, 03:56:51 AM »
A dremel might work, but I think a coping saw with a fine-toothed blade might be your best bet. Something like you'd get at an art supply store for cutting foam.
Eric B.

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Offline piszkiewiczp

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Re: Cutting the bottom off of a Better Bottle
« Reply #4 on: September 21, 2014, 12:28:04 PM »
I've never done this, but in principle some NiChrome wire, DC transformer, good ventilation and spare hardware to hold everything snug should melt right through the plastic and leave a relatively smooth edge.

Offline Scot (one T)

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Re: Cutting the bottom off of a Better Bottle
« Reply #5 on: September 21, 2014, 02:03:40 PM »
+1 to the Dremel tool.   I've used one with a thin cutting wheel many times to cut plastic.  Works great.
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Offline Werks21

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Re: Cutting the bottom off of a Better Bottle
« Reply #6 on: September 21, 2014, 08:05:05 PM »
I also vote Dremel. They make a plastic cutting accessories so if you are willing to drop a couple of bucks you can have a purpose built plastic cutter on hand for years to come. The one I have is a metal wheel with teeth around the wheel. Cuts smooth and fast.
Jonathan W.
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Offline yso191

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Re: Cutting the bottom off of a Better Bottle
« Reply #7 on: September 21, 2014, 09:15:04 PM »
Thanks to everyone.  I think I'll give the dremel tool a shot.  Now I just need to find out who I lent mine to.
Steve
All Hands Brewing
BJCP #D1667

Offline Stevie

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Re: Cutting the bottom off of a Better Bottle
« Reply #8 on: September 21, 2014, 09:36:26 PM »
If you have a harbor freight nearby. http://m.harborfreight.com/80-piece-rotary-tool-kit-97626.html

Low quality, but it's done a few jobs for me.

Offline ranchovillabrew

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Re: Cutting the bottom off of a Better Bottle
« Reply #9 on: September 22, 2014, 03:55:18 PM »
I used a coping saw
- Charles

Offline yso191

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Re: Cutting the bottom off of a Better Bottle
« Reply #10 on: September 22, 2014, 04:42:49 PM »
Steve
All Hands Brewing
BJCP #D1667

Offline ranchovillabrew

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Re: Cutting the bottom off of a Better Bottle
« Reply #11 on: September 22, 2014, 04:43:27 PM »
Easy. I filed down the edge a bit
- Charles

Offline yso191

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Re: Cutting the bottom off of a Better Bottle
« Reply #12 on: September 22, 2014, 04:46:00 PM »
Well good!  If I can't find who has my dremel, a coping saw is cheaper.
Steve
All Hands Brewing
BJCP #D1667

Offline Stevie

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Re: Cutting the bottom off of a Better Bottle
« Reply #13 on: September 22, 2014, 04:55:13 PM »
I do like the nichrome method. But then again, any method having to do with melting, exploding or burning is always preferred.

Offline dak0415

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Re: Cutting the bottom off of a Better Bottle
« Reply #14 on: September 22, 2014, 06:04:07 PM »
I want to use an old Better Bottle carboy for a hopper on my new JSP grain mill.  Has anyone had any luck or have any advice on this? 

Honestly at this point I think I'd shred it if I tried cutting it with anything I have.  My best guess is to use a torch to cut the bottom off.
Do you have a table saw?  Just set the blade to 1/16" depth and rotate the bottom of the BB against the guide.
Dave Koenig
Anything worth doing - is worth overdoing!