Depends on what your going to make with it and thickness, an oxy will heat most any steel to the melting point in a small area, but if your thinking about forging a good size knife blade with it... it will be challenging as you cannot keep the entire length of the blade glowing at once, in a small shop space you may want to consider a knifemakers forge that uses propane, hopefully wally will see this and post a pic of his.