DIY Mash Caps

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Natebriscoe
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Re: RE: Re: RE: Re: DIY Mash Caps

Postby Natebriscoe » Mon May 22, 2017 5:41 pm

hannabrew wrote:
Natebriscoe wrote:Image
Image
My latest mash cap.

Is this the 14 inch cake pan? If so what is the OD with the silicone tubing?

I'm also wondering how good of an insulator this would be compared to a modified SS lid acting as a cap.

Since I do recirculated direct fired mash,I I try to keep as much heat as possible so whatever I build for my cap also needs to be a good insulator/dead space reducer

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It's a 12" with 3/4 hose to fit a 13.5-14" pot. Honestly I took the hose off, didn't help anything. Won't speak to insulation properties (it's just a thin piece sheet metal) but with direct fired don't think it matters much (I use direct fired)

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hannabrew
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Re: RE: Re: RE: Re: RE: Re: DIY Mash Caps

Postby hannabrew » Tue May 23, 2017 8:36 pm

Natebriscoe wrote:
hannabrew wrote:
Natebriscoe wrote:Image
Image
My latest mash cap.

Is this the 14 inch cake pan? If so what is the OD with the silicone tubing?

I'm also wondering how good of an insulator this would be compared to a modified SS lid acting as a cap.

Since I do recirculated direct fired mash,I I try to keep as much heat as possible so whatever I build for my cap also needs to be a good insulator/dead space reducer

Sent from my Pixel using Tapatalk

It's a 12" with 3/4 hose to fit a 13.5-14" pot. Honestly I took the hose off, didn't help anything. Won't speak to insulation properties (it's just a thin piece sheet metal) but with direct fired don't think it matters much (I use direct fired)

Sent from my SM-G930V using Tapatalk

How does having a camlock on top work when it's floating? The main reason I wanted the silicone tubing was to give it a tight fit so it wouldn't matter if I press down slightly on the camlock

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Natebriscoe
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Re: RE: Re: RE: Re: RE: Re: RE: Re: DIY Mash Caps

Postby Natebriscoe » Tue May 23, 2017 9:02 pm

hannabrew wrote:
Natebriscoe wrote:
hannabrew wrote:Is this the 14 inch cake pan? If so what is the OD with the silicone tubing?

I'm also wondering how good of an insulator this would be compared to a modified SS lid acting as a cap.

Since I do recirculated direct fired mash,I I try to keep as much heat as possible so whatever I build for my cap also needs to be a good insulator/dead space reducer

Sent from my Pixel using Tapatalk

It's a 12" with 3/4 hose to fit a 13.5-14" pot. Honestly I took the hose off, didn't help anything. Won't speak to insulation properties (it's just a thin piece sheet metal) but with direct fired don't think it matters much (I use direct fired)

Sent from my SM-G930V using Tapatalk

How does having a camlock on top work when it's floating? The main reason I wanted the silicone tubing was to give it a tight fit so it wouldn't matter if I press down slightly on the camlock

Sent from my Pixel using Tapatalk

Camlock on top is to return recirculation to the mash. It's always blocking the surface by free floating. Also sparge through it

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hannabrew
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Re: DIY Mash Caps

Postby hannabrew » Tue May 23, 2017 9:07 pm

I plan on using it for the same purpose but I worried that if it's free floating it may not be stable enough to use the cam lock effectively. Sorry if I wasn't clear in my last post.

It sounds like you're saying it floats without issue even when attaching and detaching the cam lock right?

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Natebriscoe
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Re: RE: Re: DIY Mash Caps

Postby Natebriscoe » Tue May 23, 2017 10:30 pm

hannabrew wrote:I plan on using it for the same purpose but I worried that if it's free floating it may not be stable enough to use the cam lock effectively. Sorry if I wasn't clear in my last post.

It sounds like you're saying it floats without issue even when attaching and detaching the cam lock right?

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The sides are tall enough that connecting is not a problem. That said once I hook a hose up to it, I don't disconnect until the mash is gone. I normally connect before floating the cap anyway.

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Bilsch
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Re: DIY Mash Caps

Postby Bilsch » Tue May 23, 2017 11:31 pm

I've always worried about the friction fit caps vs the free floating ones because the volume of the wort is constantly increasing with temperature rise during the step mash and could swamp it. Add to that the volume loss if your pulling samples for pH testing etc. and the level might pull away from the bottom of the cap and draw in air and it wouldn't be obvious.
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Ancient Abbey
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Re: DIY Mash Caps

Postby Ancient Abbey » Wed May 24, 2017 9:26 am

I prefer the free floating as well, but I would definitely rather risk a friction cap over no cap at all.
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dr jacoby
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Re: DIY Mash Caps

Postby dr jacoby » Sat Jun 24, 2017 8:31 am

For those of you with a braumeister, here's one way to use a mash cap:

https://twitter.com/dudleypete/status/8 ... 2888735744
Peter
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alan.messner
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Re: DIY Mash Caps

Postby alan.messner » Sat Sep 23, 2017 8:41 pm

Love all the ideas posted here. I am leaning towards buying a cheap polyethylene cutting board off ebay, and cutting the board into the required circle diameter. Polyethylene will not melt at mash temps and a cheap low density board will float. Since I am a Biaber, I will push down on the cutting board circle, into the mash with a large potato masher. This will turn my kettle and poly propylene bag effectively into a mash filter. Once the grains are squeezed against the bottom using the polyethylene mash cap as a plate - my wort will squeeze out the side of the bag - like a mash filter. I can then raise the compressed grains out of the kettle by grabbing the bag and potato masher at the same time, then raise wort T to boil. I theorize this will give good efficiency from the grain compression and low DO since I am not suspending the grains over the kettle and squeezing. The only real DO uptake risk is while the wort is rising from mash to boil T. 12 min?

Any thoughts on why this might not work?

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