Cutting round ductwork requires precision and the right tools. A duct cutter, specifically designed for circular ducts, is ideal. First, mark the cutting line on the duct using a measuring tape and pencil. Then, position the duct cutter's blade on the marked line. Apply steady pressure, rotating the cutter around the duct. The sharp blade creates a clean, precise cut. Alternatively, a reciprocating saw with a metal-cutting blade can be used for larger round ducts. Ensure the duct is securely held in place while making the cut to prevent slips and maintain accuracy.

There are a few things you can ask welders before you hire them to get an idea of their experience and ability levels:

• Are you licensed and certified?

• How long have you been in the welding business?

• Do you commonly do the type of welding I need?

• Do you offer any kind of warranty for your work?

• Do you charge by the hour or by the project?

• How long do you expect my welding project to take?

• What steps do you take to minimize errors in your work?

Professional metal fabricators typically charge around $70 per hour, but the total cost of your project will depend on several factors. The largest cost drivers are the size, complexity, and design of the project, as well as the price and type of metal used. A good way to estimate the total cost is to multiply the cost of raw materials by four; typically, one-quarter of the total goes toward materials and three-quarters toward labor. Your geographic location can also influence costs, as labor and material prices vary by region.

Costs depend on unit complexity, labor, wall mounting needs, and additional accessories like floating shelves.