In the past, when you fitted a stove pipe together, it was common for you to have to crimp the ends together in order to prevent gaps in the joints. Modern stove pipes don't often need this crimping, as they are designed to fit together with no gaps left, and there are a range of sealants which can be used to cover any possible spaces between joins in a stove pipe. However, for traditionalists, and for those fitting together older stove pipes, crimping can still be performed, and with a few simple steps, it should be possible for anyone to crimp their stove pipe.
Step 1 - Lay Out Your Pipe
Before you begin crimping, it is important to measure your stove pipe to get the best fit for your ceiling height. You need to take this measurement in order to ensure that you don't crimp your pipe in the wrong place. Cut your pipe to suitable lengths, leaving around an inch extra on each pipe, over and above what you would need to fit the joints together.
Step 2 - Fit the Pipe Together
Once you have all your pieces measured out, carefully splice the joints together, making one long stove pipe. If you choose to, you can use the screws supplied with your stove pipe to hold the pieces in place while you crimp. Once the pipes are all connected, you can lay them on the floor in a line. This gives you the ideal position to get at any portion of the pipe you desire.
Step 3 - Using the Crimping Tool
The crimping tool will be surprisingly lightweight, so it is possible to pick it up with one hand. Use the other hand to steady the pipe about half a foot from where the crimping tool will be working. Keep your fingers well away from the crimping blades, as they are quite powerful, and likely to damage your fingers, if not cut them deeply. If you choose you could wear safety gloves to keep your hands protected while using the crimping tool. Press the crimping tool to the edges of the pipe, and then press the jaws together. The crimping tool should close around the pipe, leaving the joint closer together. This will help to keep the joint in position and free of gaps.
Step 4 - Completing the Process
After you have crimped all the joints, you should cover the outside of the pipe in a layer of adhesive or solvent which will seal the joints, and hold them together. Once this is done, prepare the fixture on the stove where the pipe is positioned, and fit it all together. You will often have to screw the pipe onto the bottom of the stove, but once this is done, you can trail the pipe towards the ceiling, and then start using the stove. The combination of crimping and sealant should ensure that the stove is now completely leak-free, and you are unlikely to experience much in the way of draughts.