Bend 4 of the 36cm long pieces to the angle you so desire. Use the bending device you had earlier prepared.
2. Fitting together: Using the cement for PVC, fit all the pieces together, ensuring the connections are very tight. This ensures the integrity of the whole frame. At this point, you can spray paint the frame if you wish to.
3. Outlining the bag: To cut out the duct tape, lay them out facing down on a rotary board for cutting. This makes it very easy to get the dimensions right the first time. First, make the sides of the bag each on its own and compare the sides to certify that they are of same sizes.
Make the bottom, the front and the two sides. The remaining back will be laid against the frame you had earlier made while the top part will have to be made later.
4. Bag Assembly: Using the duct tape, securely tape the front part and the sides together. Then join the bottom part and the front and then to finish up, attach the bottom to the sides.