Hello, everyone..I tried doing a search to see if it was asked before with no luck so I'll ask now. To Anybody that made their own rear wing/etc. what airfoild profile did you use? I have been looking at different profiles to use and saw the Selig S1223 has the highest CL that I could find. Does anybody know of an airfoil that has a higher lift coefficient? Here is a link to a website that shows the CD/CL vs angle of attack. The site allows you to print the profile, which I would use to make the  foam core's profile.

My wing profile I use looks just like what you posted except the very end which looks rather odd 


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Disclaimer opinions of others will vary depending on what they are selling

How did you go about making the mould from just a 2d drawing of the cross section?