Survey to help make better homemade water guns

Super Soaker Central (http://sscentral.org/) is interested in making new homemade water gun designs and guides to help popularize homemade water guns. Our current guides (http://www.sscentral.org/homemade/) are becoming dated, and may not serve all folks interested in homemade water guns well. Consequently, we're giving a survey of potential homemade water gun builders to better determine which tools and stores builders have access to, what sort of designs they want, and anything else relevant to building homemade water guns. We're especially interested in making our guides less US-centric, as this is a common suggestion we've received.
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