Now, roll over the whole core. DO NOT USE ANY MORE GLUE. There is plenty already on everything. This helps soak up the excess. By using the credit card to work the glue in, the foaming action will finish the job, therefore, by soaking up the extra, you will be saving weight that is unnecessary. And, by rolling over the whole wing, it makes the rest of the core tacky and helps "attract" the glue from the skin. You won't see the glue on the core, if you do, you have used too much glue. If this happens, get a new roller and roll back over it.

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