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Old 09-10-2013, 05:08 PM   #1
brewhahadave
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Default Greenlee 730BB KNOCK OUTS

I am building the electric brewery by Kal , i now have all the parts to build this system. What i am in need of is all the Greenlee knockouts . Someone out there must of used them to build the electric brewery. I would like to barrow, rent or buy them if you no longer have use of them.

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Old 09-10-2013, 09:28 PM   #2
seatbelt123
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Harbor Freight has a set for about $20. They work great.

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Old 09-11-2013, 01:26 PM   #3
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Disregard this post, I just read yours again. I see you need all of them.
What size?
If you need larger than 1/2" you will need two of them.
1/2" for the pilot hole and 3/4", 1" ect. K.O. for which ever hole you need.
The 1/2" dies use a 3/8" draw stud and the larger dies use a 3/4" draw stud.
22mm push buttons require the 1/2" K.O. and 30mm push buttons require a 1 7/32" K.O.
Or... you can go with a step drill bit http://www.homedepot.com/p/Klein-Tools-1-4-in-to-1-3-8-in-Step-Drill-Bit-59009SEN/100662408#.UjBvST-WHZY
Steve
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Old 09-11-2013, 02:15 PM   #4
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Quote:
Originally Posted by seatbelt123
Harbor Freight has a set for about $20. They work great.
I need 1/2, 9/16, 13/16, 1 1/4
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Old 09-11-2013, 02:16 PM   #5
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Quote:
Originally Posted by seatbelt123
Harbor Freight has a set for about $20. They work great.
I will stop at HF on the way home from work today and see what they have. Thanks
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Old 09-11-2013, 02:21 PM   #6
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Quote:
Originally Posted by vindee
Disregard this post, I just read yours again. I see you need all of them.
What size?
If you need larger than 1/2" you will need two of them.
1/2" for the pilot hole and 3/4", 1" ect. K.O. for which ever hole you need.
The 1/2" dies use a 3/8" draw stud and the larger dies use a 3/4" draw stud.
22mm push buttons require the 1/2" K.O. and 30mm push buttons require a 1 7/32" K.O.
Or... you can go with a step drill bit http://www.homedepot.com/p/Klein-Tools-1-4-in-to-1-3-8-in-Step-Drill-Bit-59009SEN/100662408#.UjBvST-WHZY
Steve
I need 1/2, 9/16, 13/16 and 1 1/4
I do not want to use a step drill on the Blichmann boilermaker kettles because of the curved surface.
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Old 09-11-2013, 03:08 PM   #7
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Quote:
Originally Posted by brewhahadave View Post
I need 1/2, 9/16, 13/16 and 1 1/4
I do not want to use a step drill on the Blichmann boilermaker kettles because of the curved surface.
I would think that drilling a pilot hole and then a step bit might be better than the K.O.'s
The Ko's will want to flatten the pot as the cutter is pulling through the die. Not to say the pot won't return to it's original shape, but if it were me, having used both methods, I would go with the step bit.
Just my $0.02 worth.
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Old 09-11-2013, 03:30 PM   #8
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Quote:
Originally Posted by brewhahadave View Post
I need 1/2, 9/16, 13/16 and 1 1/4
I do not want to use a step drill on the Blichmann boilermaker kettles because of the curved surface.
Also, the sizes of knock outs are for standard pipe sizes, 1/2," 3/4," 1", 1 1/4" and so on.
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Old 09-11-2013, 03:42 PM   #9
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Ok i will give the step drill a try and see how that works. I do have to say that i am afraid to screw up the kettles.

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Old 09-11-2013, 03:59 PM   #10
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Quote:
Originally Posted by brewhahadave View Post
Ok i will give the step drill a try and see how that works. I do have to say that i am afraid to screw up the kettles.
I think you'll be happy with the results.
Don't force the bit through the cut, and keep the bit lubed with some vegetable oil or some other lubricant, it will make a big difference.
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