How to Make a Signal Booster for WiFi for Free

By Techwalla Contributor

You need a signal booster for your home's Wi-Fi system if your Internet comes and goes or can't be accessed in all rooms. This happens in homes with thick walls or multiple levels. You could install a signal repeater or an external antenna and pay over $100. Or, you could download a free template and add some aluminum foil to make a parabolic reflector for less than 50 cents.

Things You'll Need

  • Free Windsurfer template download
  • Card stock
  • Aluminum foil
  • Glue stick
  • Scissors or razor

Step 1

Download the free template for the parabolic reflector (which is the signal booster) from

Step 2

Print the signal booster template at the current size for a 9db boost, or you can open it in a program like Photoshop or MS Paint and resize it up to twice as large for a 12db signal boost. The template has a square on it to ensure that while resizing you to do not stretch the template out of proportion. While resizing, make sure you keep the square a square and don't make it a rectangle.

Step 3

Print on a sturdy paper such as card stock or photo paper.

Step 4

Cut out the signal booster template and cut the six slits with your scissors or razor. If you are using a razor, be mindful while cutting. Do not cut your fingers. If you lay down the template, make sure you aren't cutting through it and damaging a table underneath. You may want to lay the signal booster on thick cardboard while cutting the slits.

Step 5

Use the glue stick to cover the signal booster with aluminum foil.

Step 6

Place the tabs in the slots.

Step 7

Place the completed signal booster over the router's antennas and point in the direction of your computers.