I'll add my two cents. First time I used Blaschak I got my first little boom. Hadn't know about leaving a red hot spot showing back then,
but had a normal reload to do. Raked it, got the bed warm, and filled the stove front to back, side to side, and heard the familiar snap,
crackle and pop of the new load. I liked the strong crackle of the new Blaschak load. I think the first load or two I was lucky, but on reloading
one afternoon, followed the same procedure as above, but my luck must have run out as I had erringly blanketed the whole hot coal bed.
..sitting and watching thru the stove glass of the load door (about 4 inches away) of my Waterford Erin Coal Stove, waiting the arrival of the blue flames, and BAMMM! I didn't know what happened. When I came to my senses in about a second or so, I was starring into blue flame and red coals and smoke as the blast blew out the ceramic stove glass. Had to think real quick, grab two buckets, and unload the hot coals fast and run outside the door (fortunately inches from the back door) and dump all in the snow. I think I had 2-3 really fast load, run and dump trips with those hot coals. No one else was home, and I'm glad I was right there. It would have really been potentially a bad fire if I wasn't there, as the stove with broken glass has no fire door. I guess it would have died down, but there could have been hot coals flying about the floor.
I try to always await the blue flames now, and always leave a little red showing. If it's a reload onto a slow much cooler burn I'll load it and continue the slow burn with primary air set for slowest burn and not await the blue, especially if it's a bedtime loadup. Slow burn and red showing allows me to feel safe to set it and forget it.
I guess stove glass is a good flue and baro protector as it gave out first. Was fun tracking down replacement glass and getting it cut to size.
Uncentral Heat Only:
Waterford Erin Coal
Waterford MKII Wood stove
Dutchwest Direct Vent - propane (comes on at 46 deg F if not home and stoves go out)