Cut the width of the blinds with a hacksaw. Saw off the valance, head rail and slats. Take measurements and mark with a pen the spots where the valance, head rail and slats will be cut.
Remove the metal piece or the end stiffener from the end of the head rail. Saw the metal head rail on the mark you made. Twist the cut piece out of the way as you are sawing with a pair of pliers or a screwdriver. Use the pliers to move the head rail back in place. You may have to file down the edges with sandpaper if they are too jagged or rough. Replace the end stiffener back in the head rail.
Bind the blind slats together with a rubber band and cover the slats with duct tape so you don't damage them with the saw. Make sure the slats are at a even length before you cut them. Use a dull blade to cut the slats with the saw on the mark you made. Cut slowly so you do not damage the slats.
Make a line with the pencil on the valance where you'll cut it. Saw it a little under the measurements so you have room to place the metal brackets. Cut slowly with the saw so you do not damage the valance.
Replace the end stiffener in the head rail. Hang the blinds back on the wall and double-check the width to make sure it is correct.
Things You Will Need
- Measuring tape
- Hacksaw or tin snips
- Pliers or screwdriver
- Always double-check measurements so you do not order the incorrect size.