Another curved incense stick showing the best way to orient them.

Another thrust structure is printed after another meltdown.   A rare stick burns all the way down & melts it.  Some brands always burn to the bottom.  It's 1 peril of PLA incense burners.  It has to be disassembled & reshaped with the soldering iron.

The leading idea is wrapping the stick in some kind of tape to try to stop the flame before it reaches the bottom.

Scotch does indeed stop the flame, but it's yet another step in addition to cleaning after every stick.

 The latest thrust structure has more aligning fiducials which aid in aligning the tabs, but still requires the mark 1 eyeball for perfecting the angles.  

There is a desire to get rid of all the farsteners.  The plunger has to be removable though.

The final frontier might be Mars, but the final frontier of incense is the backflow starship incense burner.  The concept is backflow incense & LED light creating the illusion of an exhaust flame.  3 problems emerge.  There's obviously the heat of the cone.  It would need a heat shield, maybe a metal plate.  The smoke comes out as a narrow stream.  

The typical incense holder has most of its structure devoted to spreading the narrow stream into a waterfall.  They pool it 1st, then the pool overflows in a wider stream.  In the case of a starship, the incense would burn in the 2nd stage.  The 1st stage would contain the diffuser, maybe diffusing it into exhaust streams.  It probably can't hit 33.  

Then, the ambient airflow is going to blow the smoke away so it needs a wind break.