Alright, this thread is to help those that have a hole in the exhaust and don't quite have the dosh to repair it. *Note - This is only really a band-aid solution as you will probably require a new section of exhaust in the coming months. So, start saving while this is in place. As far as repairs go, this one is really easy, just a little time consuming.
Tools
1. Muffler and tailpipe bandage. Depending on where the hole is in your exhaust, and the shape, will determine what product to get. Putty may be needed if the hole is further up near the front pipe. This tutorial, the hole was near the muffler and as such bandage could be used. 2x 'Permatex' brand was bought from 'Super Cheap' store for around $6 each. There is about 1m in each, so work out how much you need by determining the locations of the hole/s and the diameter of your exhaust.
2. Wire brush
3. Steel wool
4. PPE - things like gloves for when the exhaust is hot and glasses for when there is crud in the air.
Step 1
Find the area that has a hole in it. This may be done with the ear as the car note may sound crap, but try using your eyes.
Brush this area with the wire brush and steel wool to remove any loose surface rust and dirt around the area. Remember if you are using a bandage you will have to rub down the area behind and around the hole as the bandage will wrap there.
Step 2
Run the car for about 5-10mins to get some heat in the exhaust. This will help the bandage to stick. Now remove the backing from the bandage and discard. Make sure you chuck the right bit (its the non-sticky one!). Start to wrap the bandage around the hole, making sure you overlap the previous wrap.
The bandage will need to cover all the holes and have enough left over to wrap down the ends. This is where that maths of working out how much you needed comes in handy. Alternatively, make a educated guess.
Secure the ends of the bandage with wire to help keep it there while it welds to the exhaust.
Step 3
Run the car for about 30mins to heat up the exhaust and weld the bandage to the exhaust. I suggest that if you do go for a drive, keep the revs down.
And that is about it. Too easy!