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Author Topic: OldJarheads Milling Thread...  (Read 111130 times)

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Offline OlJarhead

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Re: OldJarheads Milling Thread...
« Reply #1180 on: May 24, 2019, 03:39:39 PM »
After dumping yet another gallon of water out of the DH I noticed that bottom check (above) was well into the wood now :(  I may have to cut that 1 1/4" piece in half to try to save it.

51% humidity today (and it rained a few times) and it's just below that in the garage.  The DH might just be keeping up with the outside air moisture but it sure feels and smells more humid in the garage.  I rigged a hose up now and am hoping I'm doing the right thing here.
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Offline btulloh

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Re: OldJarheads Milling Thread...
« Reply #1181 on: May 24, 2019, 04:35:47 PM »
Those checks are an opportunity to use bow ties. They are going to occur in some of the slabs. Dont think of them as defects.

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Re: OldJarheads Milling Thread...
« Reply #1182 on: May 24, 2019, 05:31:17 PM »
Those checks are an opportunity to use bow ties. They are going to occur in some of the slabs. Dont think of them as defects.
Oh certainly, for some, but when they split the slab in half... ;D :D ???
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Offline WDH

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Re: OldJarheads Milling Thread...
« Reply #1183 on: May 24, 2019, 08:52:37 PM »
Slabs dry better stickered in layers.  That prevents drying too fast which is probably why you are getting the checks.  I have had poor luck drying slabs individually, they dry better in a herd.  When stickered, the humidity increases between the layers and moves out of the layers to less humid air outside the stack.  When dried singly, this cannot happen.  The slab is getting full blown air on all sides.  If stickered in layers, it is important to put a layer of stickers on the top layer of the stack and stack some "nurse" boards on top to protect the topmost layer. 
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Re: OldJarheads Milling Thread...
« Reply #1184 on: May 24, 2019, 09:01:25 PM »
Yup, understood, hence my desire to get them stickered ASAP.  Just didn't work out that way so figured this was the next best option until I can sticker them Tuesday.
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Re: OldJarheads Milling Thread...
« Reply #1185 on: May 31, 2019, 12:17:19 PM »
A few pics of the slabs drying.  Some the 29th, the 2nd of the same shot today (the 31st)...

You can see some of the checks are getting a little wider



 
Some pretty heavy checking despite the very heavy coating of anchorseal.  However, I expected this because of the checks int he logs.  They were felled just a few days before I milled them and seeing the checks I thought "uh oh".  Not sure why they were checking in the hearts from the start but my guess is that it was due to the tree dying.  I wasn't dead yet but it was rotting in the stump and soon to come down.

Some slabs are doing better than others mind you so we'll see how many bowties I'll need to hold it all together!
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Offline doc henderson

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Re: OldJarheads Milling Thread...
« Reply #1186 on: May 31, 2019, 01:29:29 PM »
you may do this already, but could add shade cloth around the stack to slow things down. although at this point, it is what it is.  you can bow tie, or rip up the center to get the crack and joint and re-glue.  with lots of branches and some pith, some cracking is prob just stress in the wood.
timberking B 2000, 277c track loader, PJ 32 foot gooseneck, 1976 F700 state dump truck, JD 850 tractor.

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Re: OldJarheads Milling Thread...
« Reply #1187 on: May 31, 2019, 01:33:21 PM »
Never tried a shade cloth.  Do you just use an old sheet so the wind gets through it?
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Offline doc henderson

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Re: OldJarheads Milling Thread...
« Reply #1188 on: May 31, 2019, 02:00:38 PM »
you can see it and buy it from UC coatings, but also at a garden center.  i bought one when i picked up some trees to plant for my wife as a tarp.  it is more like netting with 1/8th inch holes;  keeps the sun off the edges and lets less but some breeze through.  i think it will help little now but would be good for next time.  i bought mine at a tree nursery.  i am sure amazon would be the fastest and cheapest, if you cannot find it locally.  looking at the slabs, I think much of this was predestined Sir.  
timberking B 2000, 277c track loader, PJ 32 foot gooseneck, 1976 F700 state dump truck, JD 850 tractor.

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Re: OldJarheads Milling Thread...
« Reply #1189 on: May 31, 2019, 07:58:39 PM »
Got my moisture meter today 8)

The pine I've been making paneling and flooring out of measures 8.5% at the end vs 23-30% for the walnut measured at the end of the slab (easy to penetrate there).  Whereas, on the surface the slabs are measuring 17%
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Re: OldJarheads Milling Thread...
« Reply #1190 on: May 31, 2019, 08:04:10 PM »
Wow!  41.5% if measured at the top of the end grain on some slabs and often lower near the bottom of the slab (10 or more % lower).  Interesting!

I can only surmise the water is both rising as it evaporates as well as either travels to the end grain or is just that wet throughout!  No wonder walnut takes so long to dry.

Some of the pine measured even lower (as low as 6%)
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Re: OldJarheads Milling Thread...
« Reply #1191 on: May 31, 2019, 08:29:40 PM »
Never tried a shade cloth.  Do you just use an old sheet so the wind gets through it?

I bought some rolls of burlap at garden store and ran them on sides of stacks... mostly on sunny sides.  Works ok but lifespan is about one season.

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Re: OldJarheads Milling Thread...
« Reply #1192 on: May 31, 2019, 09:28:59 PM »
remember for different species you usually have to change a setting on the meter, or use a conversion factor.  if you measure pine at the walnut setting it will read low since pine is less dense than walnut.  Hope you are having a good time.  thanks for letting us see your progress.   8)  you can go measure stuff in your shop or house to check your meter.
timberking B 2000, 277c track loader, PJ 32 foot gooseneck, 1976 F700 state dump truck, JD 850 tractor.

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Re: OldJarheads Milling Thread...
« Reply #1193 on: June 12, 2019, 09:40:51 AM »
Two weeks of air drying after a week or so in the garage and I am seeing some pretty low numbers that surprised me (somewhat).  Bear in mind the humidity hear can be VERY low.  Though it is 64% this morning it will likely drop to around 20% this afternoon.  It's high desert here and low humidity is normal as well as very little rain.  As such I've seen 9/4 pieces drop into the low 20's already and some 5/4 stuff around 16% and that's at the end not the flat!!!

Too fast?  Can't say I can do anything about it but the checking seems to have stopped at this point and the wood appears to be stabilizing. 

Heck, I even have the stack close to my sprinkler system so it gets some moisture twice every other day!  It's still going to be kiln ready in about two more weeks if this keeps up.

Not sure I know what to make of it.
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Re: OldJarheads Milling Thread...
« Reply #1194 on: June 12, 2019, 09:59:17 AM »
Are you checking it near the surface, the ends, or do you have a sacrificial piece, and check in the middle if it?
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Re: OldJarheads Milling Thread...
« Reply #1195 on: June 12, 2019, 02:43:38 PM »
@OlJarhead the ends and edges will be drier.  As thickness increases, there will be a bigger difference between the outside and the core,  this is part of why wood checks and why we use a kiln to reduce the difference by letting some humidity build up in the kiln.  highere at night in a solar kiln to reduce stress.  I believe most of the degrade happens at higher moisture content, so any degrade might already be done.  @GeneWengert-WoodDoc   At this point I would sit back and see haw it goes.  I have really enjoyed your thread.   :)
In hardwoods, the sapwood is less dense than the heartwood and will read less MC as well.
timberking B 2000, 277c track loader, PJ 32 foot gooseneck, 1976 F700 state dump truck, JD 850 tractor.

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Re: OldJarheads Milling Thread...
« Reply #1196 on: June 12, 2019, 03:12:44 PM »
Thanks guys.  Since this is my first use of a moisture meter I'm recording everything and paying close attention to your posts!

I noticed right off that surface moisture readings were a LOT lower which corresponds to what I'd read (the surface dries, the moisture on the inside migrates to it and evaporates etc).

I have found the ends are much higher than the surface and don't use the surface at all.  Just the ends.  Since it's all stickered and covered I don't open up to check a center on a piece I could sacrifice but I may do that once the ends start reading 16% on the thick stuff so I have some way to gauge them.

My plan is to build a garage kiln as soon as the MC drops to 16% or so.
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Re: OldJarheads Milling Thread...
« Reply #1197 on: June 12, 2019, 03:16:35 PM »
what meter are you using.  I have a pinless meter and if it is covering an area less than its base, it under reads.  less also on rough wood than smooth.  I have a wagner.  
timberking B 2000, 277c track loader, PJ 32 foot gooseneck, 1976 F700 state dump truck, JD 850 tractor.

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Re: OldJarheads Milling Thread...
« Reply #1198 on: June 12, 2019, 03:30:44 PM »
Sacrifice a piece and use the oven-dry method to see where youre at on mc.
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Re: OldJarheads Milling Thread...
« Reply #1199 on: June 12, 2019, 11:53:48 PM »
what meter are you using.  I have a pinless meter and if it is covering an area less than its base, it under reads.  less also on rough wood than smooth.  I have a wagner.  
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