The list of maintenance work was as long as ever and took even longer. One nagging problem is the trampoline built 4 years back. The eyelets/grommets just pull out even though the material is quite thick. This is mainly a problem on the front and rear edges of the tramp, the sides seem ok.
Last year I replaced the worst grommets with new 'spurred' grommets hoping this would help.
It did help, but the original holes are stretched and damaged. So this year I decided to try an make a better repair. So for each of the damaged holes:
1. Took out the old grommet
2. Cut two disks of new material and using a hot glue gun, I've stuck these one each side. I then stitched the whole thing together on the sewing machine using polyester thread. This created a strong stiff patch and allowed me to reposition the perimeter of the old hole back to where it will be gripped by the new grommet.
3. Next I needed to cut new holes. This was a problem when I made the tramp and probably the cause of weak holes in the first place. So this time, I came up with a new way to cut the holes using a heated copper pipe.
4. Pressing the hot pipe melts the material and creates a clean hole with a sealed perimeter.
5. Finally the new grommets were inserted.
Let's see if this works. It will last the season I'm sure.
If this doesn't work, perhaps I'll make a new tramp. I'm thinking this alternative design would be better. In this design, the hem forms a long pocket which has semi-circles cut out. A fibreglass rod is thread through the pocket and the lacing goes through the cut-outs and around the rod.