Step 1: Deciding on placment
You have 2 options when you make this muffler tip, the opening of the bottle may not be big enough to slide onto your existing muffler, so an addition cut may be needed on the top of the canister.
If no cut on the top end are needed it will be one less step.
Also Depends on the direction of use for the canister.
Try and select a reusable water can that will only need one cut.
Materials needed for this Instructable are as follows:
-A stainless steel reusable water container,thermos.
-Angle grinder with a cut off disk
-Drill/Drillpress and drill bits
-Bolts your choice on size (1-3)
-Metal file (optional)
-Metal Punch (optional)
-Mitre block (optional)
Note: In this picture the water canisters top is facing outward. Only one cut was done.