My wife and I live in a 3-level townhome. We have a cat and two dogs. The cat has run of the house- and in fact needs to have access to the 3rd floor. However the dogs should not be up there! My challenge: take a baby gate that we already own, and make a cat flap so the cat can go up and down the stairs without letting the dogs through.
We already had the extra-tall walk-thru baby gate that you can get at Babies 'R' Us. We had it at our old home, where we used it for the same purpose - but there, the cat was able to get around the gate by going through the railing bars. Here in our new home, the bars are too close together, and the cat can't fit through.
Step 1: Supplies (and a comment on Safety)
Copper pipe holders (1/2 inch) -- not sure if that's the official name, they're u-shaped with tabs on either side, and holes for screws or bolts to pass thru.
Four Round-head bolts, four washers, and four nuts for the bolts. I used #10 coarse thread bolts.
1x2 wood. This wood is poplar, inexpensive at Home Depot or Lowes. I used 20 inches (2 x 10" lengths).
Screen material (I already had this from repairing window screens)
Packing tape (you can use any durable tape, ie. Gaffer's, Electrical, Duct...)
Tape measure or ruler
Needle nose pliers
Drill and drill bits
Dremel tool with jigsaw attachment, or reciprocal saw, or hacksaw
Dremel tool with barrel sander bit, or sandpaper and lots of patience
Metal blade for the saw of choice above
Clamps (I use quick-clamps)
Razor, scissors or box cutter
White semi-gloss or gloss enamel spraypaint
Probably more stuff I'm forgetting.
Ah, well. I'll add them in later if I remember more.
A Note About Shop Safety, aka I Am Not Responsible If You Sever A Limb Or Injure Yourself In Some Other Grievous Manner:
Saws are loud, sharp, and create sawdust. They can cut off body parts, and cut holes in bodies. The dust that a saw makes can fly around in the air getting into eyes, mouths, ears, and skin. Saws are also loud and can damage your hearing. Electricity can also kill you.
Please wear EYE and EAR protection at all times. You may consider wearing a dustmask and work gloves, to prevent any metal shavings from becoming splinters or being inhaled into your lungs. Also please keep electric cords out of the path of saw blades.