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#1
posted to rec.boats.building
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how much epoxy
How much epoxy will it take to put glass on a four by eight sheet of plywood
? just enough for water proofing and to prevent the plywood from checking. I have never fiberglassed anything before. |
#2
posted to rec.boats.building
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how much epoxy
At the very most, twice the weight of the glass to be applied.
Glass products weight is measured in ounces per square yard (9 square feet). Epoxy weighs roughly 10 lbs. per gallon. "Clark" wrote in message .. . How much epoxy will it take to put glass on a four by eight sheet of plywood ? just enough for water proofing and to prevent the plywood from checking. I have never fiberglassed anything before. |
#3
posted to rec.boats.building
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how much epoxy
Clark wrote:
How much epoxy will it take to put glass on a four by eight sheet of plywood ? just enough for water proofing and to prevent the plywood from checking. I have never fiberglassed anything before. To be safe, 1 gallon per layer (both sides) using 17 Oz/sq yard double bias glass. Lew |
#4
posted to rec.boats.building
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how much epoxy
System Three puts out a fine, free, publication called "The Epoxy Book."
(You do have to register at their web site. http://www.systemthree.com/index_2.asp From it: (sorry about the lack of tabs) In summary, fiberglassing is a three step process: 1. Seal the wood to prevent starving the wood/cloth joint. Do filling and fairing on the sealed wood. 2. Stick the cloth down leaving a minimum amount of resin in the cloth. 3. Fill the weave any time after the wet cloth has reached the "green stage" and is stuck to the substrate. Materials Required for Fiberglassing Epoxy resin and hardener Foam roller covers and frame Fiberglass cloth Thalco (rubber) squeegee Measuring device Protective gloves, dust mask Silica Thickener Trimming knife Microballoons Sandpaper Appendix D ESTIMATING USAGE The following will serve as a guide for estimating the amount of epoxy you'll need. The key to any estimate is a reasonably accurate idea of the surface area involved. The numbers given are in square feet of coverage per gallon of mixed resin and hardener except as noted. Divide by 40 to convert figures to square meters per liter. Coating Wood First Coat Subsequent Coats Softwood Plywood/Veneer 250 400 Hardwood Plywood/Veneer 325 400 Vertical Surface-maximum non-sag 500 500 Fiberglassing (sealer, wet-out & fill coats) 4 ounce cloth 150 300 6 ounce cloth 130 250 10 ounce cloth 100 170 Biaxial Tape 32 40 Roger http://home.insightbb.com/~derbyrm "Clark" wrote in message .. . How much epoxy will it take to put glass on a four by eight sheet of plywood ? just enough for water proofing and to prevent the plywood from checking. I have never fiberglassed anything before. |
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