Replies

1. 
   DanH | Oct 09, 2007 10:00pm | #1

   LOTS of foam.

   If your view never changes you're following the wrong leader
1. 
   Luka | Oct 09, 2007 10:32pm | #2

   It can foam all over the place, I don't care about that.I am just wondering if it is going to actually form a bond that will continue to hold, if the wood is thoroughly wet ? (Inside and out.)I could have just gone to their website, but I'd rather hear from people who have tried it on the jobsite.

   Yeh... That'll work.

1. 
   Stilletto | Oct 09, 2007 11:31pm | #3

   I had to make some curved quarter round a few weeks ago and ripped strips of red oak to 1/8 of an inch.  Then threw the strips into a bucket of water. 

   The next day I clamped them to my template and used Gorrilla Glue. 

   Next day pulled the clamps and zero spring back.  Milled up great. 

   Then I used 1/4" oak veneer plywood to laminate the curved stairs.  I kerfed the back and soaked it front and back.  Once again coating it with Gorrilla Glue.  Worked very well.  

   This is my limited experience with it,  but I would do it again seeing the results.   

   Matt

1. 
   Sphere | Oct 10, 2007 12:12am | #4

   Just for clarity (not argueing) the water you added is termed "free water" freely expelled or evaporated from the wood.

   "Bound water" is more firmly entrenched in the cells ( such as "green wood" ) and would behave differently.

   I suspct Luka has some of both going on, so to hazard a guess, I would think it would be fine, unless the fiber saturation point was such that it physically could not accept the adhesive's absorbsion.Spheramid Enterprises Architectural Woodworks

   "If you want something you've never had, do something you've never done"

1. 
   Stilletto | Oct 10, 2007 01:53am | #6

   It was not green oak I used.  It was 7-8% moisture content before I put the strips into the water bucket.  The plywood was not submerged but soaked to where it formed over the stairs easily. 

   I would have to say that it was very saturated when I bent the pieces,  submerged in a bucket for around 12 hours. 

   But like I said in my original  post this is from my limited experience with it.  You bring up a very valid point. 

   Matt

2. 
   Piffin | Oct 10, 2007 01:46am | #5

   Here is my two cents worth of theory.

   There is a minimal certain amt of moisture that is needed for the polyurethene to cure.

   Anthing beyond that is superfluous.

   Is the extra damaging to the bond?

   I think it depends how much extra.

   Some of it is surface water that could lie between cells that you want to bond together. Clamping can squeeze some of that oiutr, but too much clamping would also squeeze out to much of the glue.

   So it is likely that leaving enough glue in the voids petween cells and individual pieces of wood wil leave some amount of excess water also which would interfere with bonding to some degree.

   Beyond that, when the wood cells themselves are flush full of water, they are expanded like the Goodyear blimp. Eventually you know those cells are going to shed some water to the environment and shrink in size.

   I am betting that this later deformation of the individual cells will be the most damaging to the joint and we all know that as wood dries unevenly, it also introduces addditional stresses on the joint.

    

    

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   Taunton University of Knowledge FHB Campus at Breaktime.
    where ...
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1. 
   Sphere | Oct 10, 2007 02:53am | #7

   There we go thinkin alike again...I guess I gotta get a brain transplant... just to be sure you don't see the same voices I do(G)

   Spheramid Enterprises Architectural Woodworks

   "If you want something you've never had, do something you've never done"

   Edited 10/9/2007 7:54 pm ET by Sphere

1. 
   Piffin | Oct 10, 2007 02:58am | #8

   My voices are invisible.They sure do mutter a lot sometimes though 

    

   Welcome to the Taunton University of Knowledge FHB Campus at Breaktime. where ... Excellence is its own reward!

1. 
   Luka | Oct 10, 2007 08:09am | #9

   Thank you all for the responses.Great info !!I'm going to take my chances and build my catwalks.What's up...I have 8' 2x3's.I have plywood scrap. 3/4" x 1' x 5'.The plywood has been in the rain. It is in amazingly good shape for how long it has been left in the rain.I have stacked the plywood out of the weather. But stickering it was out of the question for now. I don't expect it to dry out very much before I use it.I intend to glue the plywood to the 2x3s with gorilla glue, and screw it down with deck screws every 4 inches.Since the 2x3s are 8' and the plywood is 5', I'll have a joint on each side. I'll stagger those, of course.These are to be used for planks on a scaffold system I will build, to finish my roof.My original thoughts were, "Water... ok, that's a GOOD thing when you work with gorilla glue". Then I wondered if the plywood being as saturated as it will be, would make a difference even for gorilla glue.I am going to go ahead and do it, and see how it turns out. If it works well, then when I'm finished, I'll store the planks out of the weather and save them for other work.

   Yeh... That'll work.

2. 
   Luka | Oct 10, 2007 08:26am | #10

   Mine mutter, curse, and they argue interminably.They'll argue with me, with you, with each other, man, they'll even argue with the cat !Ok, so I can see arguing with the cat. She is so often just plain wrong. Probably because she always says the same thing, over and over again. I mean, c'mon, the dog purrs at dinnertime, the least the cat could do is at least try to bark every once in a while....

   Yeh... That'll work.

1. 
   Piffin | Oct 10, 2007 03:01pm | #11

   We can call it Mutter Clutter 

    

   Welcome to the Taunton University of Knowledge FHB Campus at Breaktime. where ... Excellence is its own reward!