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Step 2The opening in the bag
This is the part of the bag that goes against the ceiling plate. I cut a ring out of plywood for this because I need some strength. The bag is large (80 x 120 cm, nearly 3 x 4 ft flat) and of very flexible material: it does not stay in shape by itself. I added a support in the form of spokes inside. The ring is an oval shape. I left little flat pieces where the magnets are but that is not critical.
Make the ring first and put the bag flat on the floor. Then put the ring in the bag (the bag must still be open on one side).
I use double sided tape to keep bag and ring together. When fixed together, use a hot knife to cut the bag open where the hole in the ring is. The heat melts the plastic strands together which is needed if the sack is not laminated.
Make the ring first and put the bag flat on the floor. Then put the ring in the bag (the bag must still be open on one side).
I use double sided tape to keep bag and ring together. When fixed together, use a hot knife to cut the bag open where the hole in the ring is. The heat melts the plastic strands together which is needed if the sack is not laminated.
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