K is only the colour, you can put any K in dependant on use or if a cheap burner could mark the lens, wattage does the damage, if a shallow lens go less watt, or use the new Ceramic Core burners, they seem to be doing the job
K is only the colour, you can put any K in dependant on use or if a cheap burner could mark the lens, wattage does the damage, if a shallow lens go less watt, or use the new Ceramic Core burners, they seem to be doing the job