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Thread: Shop-made humidity gauge
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12th October 2006, 10:21 PM #1
Bricoleur
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Shop-made humidity gauge
Evening,
Here's something simple I knocked together recently for the workshop out of scraps. I copied the idea from a mate of mine, a pro cabinet maker, so I can't take credit for it!
Basically its a stick of glued together crossgrain offcuts (or the waste from docking a glued-up panel) using a timber suseptible to movement. I used Hoop pine, and it moves dramatically. The RH end is fixed to the wall, and the length is supported loosely in a cradle, halfway along. This allows all movement to extend leftwards, where it pushes against a lever, connected in turn to the needle. The two levers exaggerate the movement of the pine stick, so the swing at the top is really visible. This one has moved a good 300mm between dry times about 2 months ago, even further right than this photo, and the marks I made during a week of rain.
Maybe not overly useful, but entertaining, and really does give some insight into timber movement with humidity changes.
Hope you enjoy!
Andy Mac
Change is inevitable, growth is optional.
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12th October 2006 10:21 PM # ADSGoogle Adsense Advertisement
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12th October 2006, 11:00 PM #2
Dances with splinters
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I've heard of the idea before, but this is the first working version I've seen.
Nice to know some people put theory into practice...
- Andy Mc
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12th October 2006, 11:08 PM #3
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Good idea, tis something interesting!
I remember there was someone here who made something simular a couple years ago, done a search but nothing turns up?....................................................................
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12th October 2006, 11:24 PM #4
Jolly Jack Tar (retired)
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Thanks for sharing that Andy, really interesting!
Greatest Movie Quote Ever: "Its good to be the king!"____________________________
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12th October 2006, 11:30 PM #5
......say what?
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Book marked!
Thats a rippa Andy. I will install one on the weekend.
What did you finish it with?
I know not with what weapons World War III will be fought, but World War IV will be fought with sticks and stones.
Albert Einstein
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13th October 2006, 09:44 AM #6
Dehydrated Hydrographer
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14th October 2006, 01:14 AM #7
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Bah no wonder I was spellin it Hydrometer... and it was this year(dam gotta stop mixin that ol'#7 so strong).
....................................................................
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14th October 2006, 09:12 AM #8
Retired Old Teacher
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I like the idea of a guage, both this one and the other posted one. I have a commercial one on the rack where the wood rests. But, my best and more accurate one is my collar, when it is humid I sweat and stink like an old kitchen spounge and when it is dry I get as thirsty as Freddy Freeloader. Then it is time for turning off the equipment and savoring a tumbler of my favorite Bourbon or an occasional glass of Harry's #7.
There lies the problem, Harry.... MIXIN'... Around here the only mixin' is with Ice.
Originally Posted by Harry72
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14th October 2006, 09:49 AM #9
Dehydrated Hydrographer
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Good one Hickory - probably the most accurate instrument & best remedy around. Originally Posted by Hickory
At Sturt SfW they have about 2m of cross grained timber mounted. Extremes of humidity are marked. During the year I was there we had the driest year ever - which was ended by overnight rain 2 nights before our graduation exhibition.
One or two people
spent an all-nighter trimming drawer fronts.
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14th October 2006, 10:52 AM #10
Banned
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clever Andy....I read about that before too, but never seen it actually made...... a constant reminder to leave room for movement in designs eh.
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14th October 2006, 07:06 PM #11
Deceased
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I can relate to that Originally Posted by AlexS
Good one Hickory - probably the most accurate instrument & best remedy around.
At Sturt SfW they have about 2m of cross grained timber mounted. Extremes of humidity are marked. During the year I was there we had the driest year ever - which was ended by overnight rain 2 nights before our graduation exhibition.
One or two people spent an all-nighter trimming drawer fronts.
DAMHIK!
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