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Offlinemattymonkey
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moisture content for sawdust based mixtures
    #4245358 - 06/01/05 08:07 PM (12 years, 1 month ago)

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! :smile:

thanks


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Invisiblebluecat
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Re: moisture content for sawdust based mixtures [Re: mattymonkey]
    #4245447 - 06/01/05 08:33 PM (12 years, 1 month ago)

when i squeeze a handful, i like to see just a tiny bit of water drip out through my fingers.


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Offlinemattymonkey
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Re: moisture content for sawdust based mixtures [Re: bluecat]
    #4245453 - 06/01/05 08:34 PM (12 years, 1 month ago)

how do you add the water though?

just add slowly till you get to the right spot?


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Offlineshirley knott
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Re: moisture content for sawdust based mixtures [Re: mattymonkey]
    #4245535 - 06/01/05 08:53 PM (12 years, 1 month ago)

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!

:smile:


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Offlinemattymonkey
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Re: moisture content for sawdust based mixtures [Re: shirley knott]
    #4245587 - 06/01/05 09:09 PM (12 years, 1 month ago)

thanks!


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OfflineBigGameHunter
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Re: moisture content for sawdust based mixtures [Re: mattymonkey]
    #4245793 - 06/01/05 10:10 PM (12 years, 1 month ago)

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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InvisibleTroutmask
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Re: moisture content for sawdust based mixtures [Re: shirley knott]
    #4245991 - 06/01/05 11:11 PM (12 years, 1 month ago)

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!

:smile:




excellent, i was going to say the same


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Offlineshirley knott
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Re: moisture content for sawdust based mixtures [Re: mattymonkey]
    #4248172 - 06/02/05 03:28 PM (12 years, 1 month ago)

i decided to submit this in the FAQ forum - wish me luck!  :crazy: :smile: :tongue:


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