here is a technique you might like to try. it can deliver more of a pure incense fragrance and less of the burnt smell you can get if too much heat is used.
First of all please remember and take care that burning anything can be hazardous so take precautions and keep children and animals well away.
1. Light your charcoal disc as normal.
2. Often you will find instructions telling you to wait until the disc is covered with white ash before adding the resin this is where our technique differs since we believe that gives far too hot a burn. Instead, light the disc and allow the white ash to develop around the outer edge (so the well in the centre is still black).
3. At this stage, fill the well in the charcoal disc with normal household salt (to just below the rim).
4. Place a single (reasonable sized grain of resin in the centre of the well and allow it to melt naturally. This will generally soak downward into the disc and will leave a small hole in the salt layer. It is into this hole that you feed pieces of resin as the need arises.
5. You should find that this creates a relatively cool spot in the centre of the burning disc and this produces high quality incense vapours without that awful burning smell.