If I make a incandescent light bulb with a sturdy and thicker filament will it also increase the temperature or just make it more durable?
In a tungsten bulb, the light output is related to both the surface area of the filament and its temperature. While the heat output is simply the input power minus the light power (which is usually in the range of 5% of the input power, can be 10% for halogens). Having a thicker filament will decrease the resistance which will cause more current to flow at the same voltage which results in more power and thus more heat, but a thicker filament at a constant power won't necessarily result in more heat, power out = power in.
Heat (watts) ~~= 0.95*input power (watts) for an incandescent globe.
Note: A tungsten heat globe will put out marginally more heat and marginally less light (I say marginally because even in the light globe, 95% of the power is heat anyway)