Elastomers and Processes.

Your idea sounds similar to a product my young boys have played with. This is the best example of what I think you’re proposing. Of course, the spikes aren’t as thick, but as Scott said, you may have to reduce the number of spikes and thicken them up. Your idea doesn’t seem too far fetched given the multiple examples of similar products.

Or I could totally be of the mark. . .if so, I apologize.
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