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#1
posted to rec.boats.building
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Surface Moistures and Epoxy
I am milling 16' lengths of western red cedar into strips for a jollyboat.
This wood is fresh from the forest and is moist to touch. Can I have some opinions on what the surface moisture shld be before I epoxy and FG this stuff? Cheers, T. -- |
#2
posted to rec.boats.building
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Surface Moistures and Epoxy
Beardow T & P wrote:
I am milling 16' lengths of western red cedar into strips for a jollyboat. This wood is fresh from the forest and is moist to touch. Can I have some opinions on what the surface moisture shld be before I epoxy and FG this stuff? Cheers, T. -- As a starting point? 12 to 15% |
#3
posted to rec.boats.building
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Surface Moistures and Epoxy
Beardow T & P wrote:
I am milling 16' lengths of western red cedar into strips for a jollyboat. This wood is fresh from the forest and is moist to touch. Can I have some opinions on what the surface moisture shld be before I epoxy and FG this stuff? Cheers, T. -- some epoxies can actually be mixed and applied underwater. Some can be applied to damp surfaces, others cannot. The real concern should not be the epoxy but rather the movement of the wood. Woods expand and contract with moisture, other things, including epoxy, expand and contract with temperature... paul oman progressive epoxy polymers inc www.epoxyproducts.com |
#4
posted to rec.boats.building
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Surface Moistures and Epoxy
"Beardow T & P" wrote in message news:A4UHi.195768$fJ5.173267@pd7urf1no... I am milling 16' lengths of western red cedar into strips for a jollyboat. This wood is fresh from the forest and is moist to touch. Can I have some opinions on what the surface moisture shld be before I epoxy and FG this stuff? Cheers, T. -- Talk to Gougeon. Lew |
#5
posted to rec.boats.building
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Surface Moistures and Epoxy
Fortunately, the cedar will dry very quickly if if is cut into thin strips.
A few weeks outdoors protected from rain should do it. Dave "Beardow T & P" wrote in message news:A4UHi.195768$fJ5.173267@pd7urf1no... I am milling 16' lengths of western red cedar into strips for a jollyboat. This wood is fresh from the forest and is moist to touch. Can I have some opinions on what the surface moisture shld be before I epoxy and FG this stuff? Cheers, T. -- |
#6
posted to rec.boats.building
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Surface Moistures and Epoxy
Thanks for the advice, guys!
T. "Beardow T & P" wrote in message news:A4UHi.195768$fJ5.173267@pd7urf1no... I am milling 16' lengths of western red cedar into strips for a jollyboat. This wood is fresh from the forest and is moist to touch. Can I have some opinions on what the surface moisture shld be before I epoxy and FG this stuff? Cheers, T. -- |
#7
posted to rec.boats.building
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Surface Moistures and Epoxy
On Sep 23, 6:18 pm, "Beardow T & P" wrote:
Thanks for the advice, guys! T. "Beardow T & P" wrote in messagenews:A4UHi.195768$fJ5.173267@pd7urf1no... I am milling 16' lengths of western red cedar into strips for a jollyboat. This wood is fresh from the forest and is moist to touch. Can I have some opinions on what the surface moisture shld be before I epoxy and FG this stuff? Cheers, T. -- My advice. Bone dry. I recently built a canoe with Western Red Cedar and Teak strips. It was dry, or so I thought. I fiberglassed it and then laid on 10 coats of varnish over a period of several weeks. Each coat had dried for more than 24 hours, including the epoxy. Then I set it on the lawn for several hours where it was in the sun while I took some pictures of it. That afternoon I went to retrieve it and found hundreds of white, tiny, bubbles coming up through the well cured epoxy and glass. It looked like needlepoint as each of the little bubbles was evenly spaced by the grid of the glass cloth. ALL the bubbles were from the strips of Cedar. Apparently the Teak was too dense to hold moisture. |
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