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 mattymonkey
Feel Like aStranger...
Registered: 11/07/04
Posts: 973
Last seen: 11 years, 3 months
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 moisture content for sawdust based mixtures 
#4245358 - 06/01/05 06:07 PM (18 years, 10 months ago) |
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how do you all get your sawdust to the proper moisture?
i tried soaking then straining but i guess i didnt strain enough because my stuff looks rather wet..
people just say add water till wet but what the heck does that mean! 
thanks
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"listening for the secret.. searching for the sound.."
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 bluecat
Stranger
Registered: 04/28/05
Posts: 22
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 Re: moisture content for sawdust based mixtures [Re: mattymonkey]
#4245447 - 06/01/05 06:33 PM (18 years, 10 months ago) |
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when i squeeze a handful, i like to see just a tiny bit of water drip out through my fingers.
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mattymonkey
Feel Like aStranger...
Registered: 11/07/04
Posts: 973
Last seen: 11 years, 3 months
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Re: moisture content for sawdust based mixtures [Re: bluecat]
#4245453 - 06/01/05 06:34 PM (18 years, 10 months ago) |
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how do you add the water though?
just add slowly till you get to the right spot?
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"listening for the secret.. searching for the sound.."
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shirley knott
not my real name
Registered: 11/11/02
Posts: 9,105
Loc: London 
Last seen: 7 years, 3 months
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 Re: moisture content for sawdust based mixtures [Re: mattymonkey]
#4245535 - 06/01/05 06:53 PM (18 years, 10 months ago) |
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you need to take 100g of your sawdust and put it on a baking sheet in the oven on low for 20 mins - keep checking it's not burning - then weigh it again. if it now weighs 84g, that means it was 16g water, or 16%. work from here:
now go back to your bag of sawdust, and weigh it- say it weighs 1kg. to get this to 65%, you'd need to add water by doing a little maths. adding 140g (140ml) of water per 100g gets it up to 84/240 = 0.35 solids, or 0.65 water.
thus 1000g sawdust (containing 840g excluding all water) + 1400ml water = 840g dry substance/2400g wet weight = 65% moisture, a good number to aim for. do some tweaking with your own numbers, and check it again twice - you can tie yourself up in knots doing this!
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buh
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mattymonkey
Feel Like aStranger...
Registered: 11/07/04
Posts: 973
Last seen: 11 years, 3 months
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Re: moisture content for sawdust based mixtures [Re: shirley knott]
#4245587 - 06/01/05 07:09 PM (18 years, 10 months ago) |
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thanks!
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"listening for the secret.. searching for the sound.."
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BigGameHunter
Tech
Registered: 04/14/05
Posts: 242
Last seen: 4 hours, 16 minutes
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Re: moisture content for sawdust based mixtures [Re: mattymonkey]
#4245793 - 06/01/05 08:10 PM (18 years, 10 months ago) |
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This is what works for me. I usually put sawdust in a big pot or bucket & then put water in it to just over the level of the sawdust after the sawdust & water is stirred together. I usually let it soak overnight. Then after it has soaked I pour the excess water off & prop the bucket or pot up on a board or something so the water continues to drain off, push the sawdust to the higher side of the bucket or pot. I let this drain for a couple of minutes but not too long. Then I prepare it for sterilization, so far after sterilization it's been pretty good (not too wet & not dry)
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Troutmask
Unhijacked!
Registered: 05/30/05
Posts: 39
Loc: Boulder, Colorado
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Re: moisture content for sawdust based mixtures [Re: shirley knott]
#4245991 - 06/01/05 09:11 PM (18 years, 10 months ago) |
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Quote:
shirley knott said:
you need to take 100g of your sawdust and put it on a baking sheet in the oven on low for 20 mins - keep checking it's not burning - then weigh it again. if it now weighs 84g, that means it was 16g water, or 16%. work from here:
now go back to your bag of sawdust, and weigh it- say it weighs 1kg. to get this to 65%, you'd need to add water by doing a little maths. adding 140g (140ml) of water per 100g gets it up to 84/240 = 0.35 solids, or 0.65 water.
thus 1000g sawdust (containing 840g excluding all water) + 1400ml water = 840g dry substance/2400g wet weight = 65% moisture, a good number to aim for. do some tweaking with your own numbers, and check it again twice - you can tie yourself up in knots doing this!
excellent, i was going to say the same
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shirley knott
not my real name
Registered: 11/11/02
Posts: 9,105
Loc: London
Last seen: 7 years, 3 months
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Re: moisture content for sawdust based mixtures [Re: mattymonkey]
#4248172 - 06/02/05 01:28 PM (18 years, 10 months ago) |
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i decided to submit this in the FAQ forum - wish me luck!  
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buh
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