HearthStone Shelburne secondary burn 

My stove is a little different because it was built in 2009. But the general rule is that you need to have dry wood and a temperature of 400 degrees or more to begin the secondary burn. The instruction manual that comes with the stove and the stovetop thermometers should guide you.

@@richmonddan8249 i just got my stove from my brother, im unsure of the age but i do know its only had 2 fires in it, its a shelburne 8370 heats great and i have dry wood i just cant get it to secondary burn

I wait until the stove is burning vigorously before I begin closing the primary air very slowly. Usually it takes at least an hour to get the stove hot enough to begin closing the primary air. Then I very slowly close the primary air, a little bit at a time. If you are successful, it will look like it does at the end of the video. If your glass is getting black, it is probably because your wood is not dry enough. Wet wood doesn’t burn nearly hot enough and it smokes a lot. Use an inexpensive moisture meter to check the moisture content of your wood on a freshly split face. The glass on mine can stay clean for several days.

Yes, Margie, Hearthstone uses soapstone. They also make cast iron stoves with no soapstone. The Shelburne is a cast iron stove.

Also, some of the cast iron stoves are lined with soapstone. My Shelburne, however, was made in 2009 and is lined with firebrick, not soapstone.