The printed instructions should have the how-to for the holes. We did do a lot of experimentation with many different adhesive and paper/plastic for the discs. The plastic worked much better in strength and weather resistance. The adhesive we settled with was the most aggressive permanent type we could find. Unfortunateley, the maximum strength requires 24 hours. The cost is about three times the cost of the "permanent" paper type that Estes used in the past.

Of all the methods for attaching the shroud lines ( knotting, looping, punching through, unravelling, etc.) the two small holes outperformed all the other methods.

The tyvek-plastic strips works best on the larger chutes.

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Carl McLawhorn
NAR#4717 L2
semroc.com