What temperature is reached when welding with acetylene? What temperature can stars reach? Are #1 and #2 similar in magnitude?
Acetylene
Acetylene is used for oxyacetylene welding  An acetylene/oxygen flame burns at about 3,773 K  The star Betelgeuse has a surface temperature of 3,500 K
chemical compound
Does welding with acetylene simulate the temperature of a star?