E-flite Mini Funtana 3D EP ARF - Manual (Page 22)

 5. Use a sharp hobby knife to cut the covering
slightly inside the lines drawn. Be very careful
not to cut into the underlying wood, as this will
weaken the stab and cause it to fail in flight.
Note : You can use a soldering iron instead of a
knife. This will eliminate the chances of cutting
into the wood.
 6. Hinge the elevator and stabilizer, using the
same process as described in Aileron Hinging.
Use 4 hinges for this process.
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