102400KB each so you will be fine!
I have a Gallery set up now with the pictures of the boat cowl build for my gas rigger.
Please follow the manufactures instructions on mixing and on the hazards of glues. I am not affiliated with these manufactures no do I get paid to endorse them, only a happy customer.
After assembling your plug, buff out to a high gloss finish. I wax the plug using Partal #2 paste wax. Wax 5 times buffing off the wax. Do small areas at a time. The wax dries fast and is hard to remove if left to dry completely. This wax film builds up and will not allow the epoxy to stick. Let sit for a day. I use a tack cloth to wipe off plug before next step. Brush on a layer of Partal #10 Film Release making sure of complete coverage. This is a thin liquid, green in color and drys fast. Let dry completely. You can take a hair dryer set on low heat and can force dry. Mix up ( www.adtechplastics.com ) ES204SC Silicone Carbide Surface Coat and apply using a 1" or so nylon throw away brush that wont shed bristles. This is a black gel coat that when dry is very hard and drys to a high gloss. Brush on to approx 1/16 to 3/32 thichness over complete plug. Let dry untill the coating wont transfer to your finger when touched. In my shop at about 70 Degrees took approx 90 min.
Next mix up a small batch of West Systems Epoxy #105 resin and #206 hardner with some 1/32 chopped glass and chopped cotton. Apply to all areas on plug where their is a sharp inner corner. By doing this it helps with getting the cloth in the next steps to adhear with out bridgeing and causing voids.
Next brush on a coat of West Systems Epoxy #105 resin and #206 hardner over complete plug, add 3 layers of 4oz fiberglass cloth cut on a bias to the weave. Cut in small pieces and apply using epoxy, By cutting colth on bias it will conform over the angles and compound areas on the plug. Make sure fully wet out and down tight to the plug. You will be able to see white areas where air is trapped between the laminations. Stiple down with brush to remove. Do not worry if these layers dont look pretty due to it will be covered up on the next step.
Mix Adtech El323TC tooling compound untill uniform in color. It will turn green when fully mixed. I kneed on a plastic covered bench with latex gloves on. Flatten out to 3/8" thick and place on the plug. Push down from one edge working to other side pushing out any air. We are trying to not have any voids betweeen the laminations of any of these materials used. This will make a weak mold. Cover the complete plug with the putty.
Next add 3 layers of 6oz cloth over the putty using epoxy mentioned above. These pieces of cloth can be cut big and glued down. I add a couple more layers of cloth down along the flat parting board sides to make stronger. Now let this sit for 24hrs to dry. When dry, trim the edges with a jig saw with a metal blade and sand any sharp edges along out side edge. I have a couple of hard plastic wedges I use to force between the mold and cowl to remove.
That completes the project. It cost me 40.00 in materials and 4 hours labor to make the mold. It has taken me longer to post pictures and peck type this proceedure. HEHE.
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Joe
