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Well, its one week later and the mold has been opened! Just as I expected, an excellent mold.
In the photos you can see its been all trimmed up and all the nasty little pokey strands have been rounded off so its safe to grab. Once you have started the separation in one corner, stir sticks are the tool of choice. Sliding them down the flanges, going slow you can see the diagonal line of the release as you go. Everything was clean and the TE fence was removed. Now some 1000 grit and polish it up. Now onto the P5 molds. Dave
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Adam,
I used to spend crazy time making the plugs completely scratch free and use only wax as the release. I found that I still had some sanding to do on the edges and maybe something stuck and I had to fix it etc. My system has been worked out over many years and the results are always good. The key for me is a very thin PVA coat as an aid to the release. Not a full barrier as normally done to stop the resin from touching the surface. Its still 10 coats of Mold Wax then the mist coat. Sanding the texture is minimal work for me, most people would not notice the texture if they look at the mold. For me I know there are other systems and I always read what your doing as well. Great stuff by the way. Dave |
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Solana Beach, Ca
Joined Sep 2006
2,359 Posts
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Dave, wheres the order form form for a new sd winter board. Think 6 foot Swamis, from the nnw. Do I really have to buy freaking retail? I don't care which winter you deliver it either. 2012/13 is fine, and I'll even head over there to pick it up.
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Vac bagging wing plug/hand layup comparison.
I have just checked my vac bagged wing plugs for accuracy with a template printed out from Profili. At the root, my wings are 260mm chord. They are compressed at least 1 mm. at the point of maximum thickness! (maybe closer to 2 mm!)
This is further validation in my mind of your method of hand layup of the glass/carbon without vacuum Dave! I will be doing any future plugs your method. ie. without vacuum. Jim. |
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Jim,
You don't need to use full vacuum doing a plug. You only need to go no more than 8-10 hg for plenty of contact. If your using the Dow Blue foam called "square edge" that I get here, we know it as a 2 lb foam density. Im surprised you would have that kind of change in the foil. I normally use 22-25 hg with normal bagged wings and no change in the foil size. This makes me think your using a lighter weight foam. Dave |
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