Description
Malco 1" V-Cut Duct Board Cutting Tool (Black)
The Malco DT1V is a hand-pushed duct board cutter built for 1-inch fiberglass duct board. It is the black tool in Malco's duct board system, made to cut an accurate V-groove that lets the board fold into a clean, square corner, so a straight sheet of board turns into a duct section with tight seams that are ready to staple and tape.
The tool rides on a heavy-duty steel sled frame with a thicker base, so it tracks straight along a guide and holds up to daily shop and jobsite use. The blades are heat-treated stainless steel, chosen for corrosion resistance and edge retention, and they are replaceable, so a dull edge never means buying a new tool. When it is time for fresh blades, the matching set is the Malco DT1VRP.
Key Features
Sized for 1-inch board. The cut depth and blade geometry are set for 1-inch duct board, so every pass is consistent without adjusting anything.
Clean V-groove folds. Cuts the V-groove that folds into a corner, so sections come together quickly with tight seams.
Heavy-duty steel sled. A thicker steel base keeps the tool tracking true along a straightedge and stands up to repeated use.
Replaceable stainless blades. Heat-treated stainless steel blades resist corrosion, hold an edge, and swap out with the DT1VRP replacement set.
Layout and Offsets
Each tool comes with an offset chart for laying out duct board, and the fasteners are included. For 1-inch board, the chart works from the inside dimension of the finished duct: the first location sits 1-1/8 inches inside that dimension, the second and third sit 1-1/2 inches past it, and the fourth sits 2 inches past it. Malco calls these offsets a starting point, because board thickness varies and the downward pressure you put on the tool changes the result, so a test cut on scrap is a good habit.
Most shops pair the DT1V with the red Malco DT1C cut-off tool of the same size, which handles the end cuts and shiplap edges while the DT1V cuts the folding V-grooves.
Frequently Asked Questions
What thickness of duct board does the Malco DT1V cut?
It is made for 1-inch fiberglass duct board. Malco makes the same tool for 1-inch, 1-1/2-inch and 2-inch board, so match the tool to the board you are fabricating.
What is the difference between the red and black Malco duct board tools?
The red cut-off tools make straight edge cuts and shiplap joints for end cuts. The black V-cut tools make V-groove cuts that let the board fold into corners. A full duct section usually needs both.
Can the blades be replaced?
Yes. The blades are replaceable, and the matching replacement set for this tool is the Malco DT1VRP. Those blades are made only for the DT1V.
Is anything else included?
The tool ships with its blades installed, the fasteners, and an offset chart for layout.
