Originally Posted by BMatthews

For balsa I've used the same method for quite a few years now of stitching a line of pin holes through the plans into the wood. Just the ends for straight lines which I cut using a ruler and about 3/16 to 1/4 apart for curved portions. It's bothersome and leaves the plans with holes but it doesn't take as long as you might think. And it's far less overall time than copying the plan and cutting out and then spraying gluing all the parts from a second set of plans.
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