How can a soft flame be obtained without reducing the torch's heat output?

A larger tip allows for a greater volume of gas to be delivered, which can create a softer flame. By adjusting the gas pressure accordingly, you can ensure that the flame retains its necessary heat output. This approach is effective because it balances the mixture of fuel and oxygen, providing a softer, controllable flame that still achieves the desired thermal energy.

Using a smaller tip with higher gas pressure might produce a sharper, more focused flame instead of a soft one. Lowering the oxygen supply would alter the combustion process, potentially leading to inefficient burning and insufficient heat generation. Increasing the temperature setting generally raises the flame intensity rather than modifying it to be softer. Thus, using a larger tip while adjusting gas pressure is the optimal method to achieve a soft flame with maintained heat output.