Check out the Xtreme Skater Ramp Tool for calculating the transition cuts.

The *String and Compass* method can be used to draw smooth and precise transitions.

Here's how it works, when cutting a transition, the curve always follows that of a perfect circle (unless you want an irregular ramp). So, to draw the transition, you just need to figure out how large of a radius you want for your curve and where to start/end the transition. These factors will depend on the ramp you are building.

The following is directions for cutting the transition for a 3 feet and 6 inches tall halfpipe, using a transition radius of 6' 10", see the bottom of the page for how the transition differs for other ramps.

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