Making an oval stove pipe can be quite a task, as it involves metalworking skills and the right tools. Typically, an oval stove pipe is used to connect a wood stove to a chimney when a circular pipe would not fit due to space constraints. Here’s a step-by-step guide to making an oval stove pipe. Keep in mind that working with metal requires care to avoid injuries, and it is important to ensure that all stove pipes meet local building codes and standards for safety.
### Tools and Materials Needed
– Sheet metal (the gauge should meet the requirements for a stove pipe)
– Metalworking tools (e.g., snips, hammers, anvils)
– Metal brake or bending machine (for creating smooth bends)
– Stove pipe crimper (if joining the pipe to round sections)
– Welder or rivets and rivet gun
– Metal file or deburring tool
– Tape measure and marker
– Gloves and safety glasses
### Step 1: Design and Measurements
Start by determining the required size for your oval stove pipe. Measure the space where the pipe will be installed to ensure a good fit, and consider the size of the connection points on both the wood stove and the chimney. Typically, stove pipes are made using 24-gauge or heavier steel. Draw the profile of the oval shape to the exact dimensions needed on a piece of cardboard to serve as a template.
### Step 2: Cutting the Sheet Metal
Transfer the template onto the sheet metal. Use a marker to outline the shape, marking where the metal will need to be cut and folded. Carefully cut the metal using snips or a cutting tool suitable for metalwork. Remember to cut slowly to maintain accuracy and avoid jagged edges, which may require filing later.
### Step 3: Forming the Oval Shape
To form the metal into an oval shape, you will need a metal brake or bending machine. For a DIY approach without specialized tools, you could use a sturdy workbench edge to help create the bends by hand. Gradually bend the metal over the edge of the workbench, working your way along the marked lines to form the oval shape. For more uniform bends, using a metal brake or bending machine is advisable.
### Step 4: Joining the Edges
Once the sheet metal is bent into the approximate oval shape, the edges will need to be joined. This can be done by either welding the seam, which will create a more permanent and airtight bond, or by using rivets and a rivet gun. If riveting, apply a high-temperature sealant along with the seam for added security against leaks.
### Step 5: Finishing Touches
After the main body of the pipe is formed and the seam is secure, file down any sharp edges with a metal file or deburring tool for safety. If the pipe requires a crimped end to fit into another section, use a stove pipe crimper to create the necessary crimps. Before installation, inspect the oval stove pipe carefully to ensure there are no sharp edges or gaps that could cause safety issues.
### Step 6: Installation
Fit the pipe into the designated space between the wood stove and chimney, ensuring a snug and secure fit. Seal any connections with high-temperature-resistant sealant where necessary to prevent leaks.
### Final Considerations and Safety
Please be aware that improper installation or manufacture of stove pipes can lead to dangerous situations, including the risk of fire. Always consult with professionals if you are unsure about how to proceed, and always have your work inspected to ensure it meets safety codes.
Remember to wear your safety equipment during this project and to work in a well-ventilated area. If at any point you feel that the task is beyond your capabilities, do not hesitate to contact a professional for help. Safety should always be your first priority.