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Home Brew Forums > Home Brewing Beer > DIY Projects > Kettles, Mash Tuns, & Hot Liquor Tanks > Just making sure.
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Old 02-16-2007, 04:08 PM   #1
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Default Just making sure.

I'm going to cut slots in my manifold this weekend. DO the slots go on the top or on the bottom?

I bought a metal cutting blade for my jigsaw, will that create a wide enough slot?

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Old 02-16-2007, 04:10 PM   #2
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I don't know what you are talking about, but you can always bend the metal up or down to make the slot bigger...

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Old 02-16-2007, 04:13 PM   #3
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It's debatable.
Some say top, some say bottom.
I do both.
You'll not get a syphon effect because the slots go to the half way point so no reason for them to be on the bottom. They wont block if they are on the top due to the slot going to the middle so they also drain from the side.



Yes the slots will be wide enough. Use a fine blade to reduce the swarf and rough edges.

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Old 02-16-2007, 05:00 PM   #4
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I've heard that you put them on the bottom so you can get the last of the wort out of the tun. I would also thing that this would prevent the grain bed from compacting into your slots.
All in all I'm thinking it wouldn't make a huge difference either way.

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Old 02-16-2007, 05:13 PM   #5
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FWIW, Palmer says face down.

FWIW, my efficiency went up a little when I put them face up.

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Old 02-16-2007, 05:16 PM   #6
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I did the bottom thinking like Rich stated but I can install it either way. I cut my slots with a hack saw (tedious!) but if you're looking like Orfy's your fine.

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Old 02-16-2007, 06:56 PM   #7
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Quote:
Originally Posted by Dude
FWIW, Palmer says face down.

FWIW, my efficiency went up a little when I put them face up.
Is that directly related to the facing of the slots? What about staggering them - 1" apart on top and 1" apart on the bottom? Would that weaken my manifold?
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Old 02-16-2007, 08:01 PM   #8
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How about on the sides?

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Old 02-16-2007, 08:03 PM   #9
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Every time I've seen a manifold (and no, I haven't used one myself), the slots have always been on the bottom. Short a compelling reason to be different, I think I'd stick with the crowd this time.

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Old 02-16-2007, 08:05 PM   #10
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Quote:
Originally Posted by Cheesefood
Is that directly related to the facing of the slots? What about staggering them - 1" apart on top and 1" apart on the bottom? Would that weaken my manifold?
It is copper, right? If you did slots on both sides alternating spaces, it would hold up structurally, no problem. That might be a good idea!
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