I have done a DIY task on the bumper dent using hot water. And this was one of the easiest DIY task I have done. All you need is a hammer and hot boiling water, but be careful with the hot water.
First unscrew the dent part of the bumper from the car. If you can remove it completely that will be better. Now please note that don’t try the hot water technique if the dent is at some sensitive part of your car. Bumper is fine. You can try this on the bumper.
Now what you need to do is boil water to the boiling point. Now put that boiled water from the inner side of the dented bumper. Take a hammer and hit it outwards. You will notice that the dent will remove smoothly and slowly. But don’t hit the hammer with too much force that may spoil the bumper because the bumper becomes sensitive when you put hot water. You can repeat this process twice or thrice, but don’t do it more than that otherwise the bumper will spoil. You will realize the dent going off.
Also remember that when you do this DIY task, make sure you don’t have any kids around. Because you will be pouring hot water on the bumper, and if there is any kid nearby, they may get hurt. Anyways there is lot of cases when kids are losing their lives because of irresponsibilities, so don’t let this thing be another reason for the same.
And who so ever is performing this task; make sure that you cover your hand with gloves when you are pouring hit water on the bumper. Don’t forget that the water isyo at its highest boiling point, you may burn your hand badly.