Note: I am a partner in a business that distributes these PVC fittings (just so no one is surprised by that).
Here's a video where my family talks about that cat.. it's funny:
Step 1: Come up with a plan
Step 2: Gather your Materials
Here's a run down of what I used and where I got them.
Note: all sizes are 1/2"
Structural PVC Fittings - these fittings are made particularly for building things (they do not carry fluid), though you could use standard PVC fittings as well.
8 - PVC20 - Three Way L - These will be for the corners
5 - PVC25 - Tee - These will be for the middle supports and for the top of the lid.
11 - PVC10 - Slip Tee - These hold the "bag supports" and also are used to hinge the lid.
2 - PVC15 - Elbow - These are the corners of the lid.
Snap clamps are PVC clips that are used to hold on both the lid fabric and the laundry bags.
12 - For the bag supports
12 - For holding on lid fabric
Snap Clamps on Our Site
Snap Clamp Manufacturer
PVC Pipe Lengths
I kept the lengths simple. I made it three feet tall and 6 feet wide, so I only had two lengths to cut (with the section of the lid "edit" (more about that later). This is all 1/2" Schedule 40 PVC
16 - 3 foot cuts (4 for bottom, 4 for top, 6 for uprights, 2 for lid)
11 - 18" cuts (2 for bottom, 6 for top, 3 for lid)
You will probably want to determine the size based upon the size bags that you are planning to use.
5 Laundry Bags
1 pc of fabric to cover the top
a bunch of safety pins to help attach the fabric.
Step 3: Assemble PVC Frame
Notice how I slipped on the PVC Tee fittings onto the pipe. I used 3 on one and 4 on the other, the extra on one side was a support for the middle of the lid.
The only real tricky part was the length of the lid pipes. Because the hinges are offset I had to trim one of the top pipes so that it fit with the offset. Once I got to that part in the project I simply measured it in place and trimmed off a the excess with a hack saw.
I did not glue my PVC together. The fittings I was using had a thigh enough fit to stay together.
Step 4: Attach Bags & Fabric Top
My wife found some discount fabric that we laid over the top, pulled tight, snapped on with snap clamps and then fasted with a few safety pins (so that the excess fabric didn't flap around).