Meet my heating pad. I stick it in the microwave and it’s fantastic. When I first got it, I sewed vertical lines on it to create pockets for the filler, because otherwise all of the rice (or whatever is inside) would drop to whichever end was hit the most by gravity. Sewing the lines kept everything spaced out.
Anyways, the old cover (not pictured in the photo below) was falling apart, so I needed to make a new cover.
Below is the old cover turned inside out. I put it on top of some fabric to cut out a new cover.
Below: I cut out two layers of the blue material for the new cover. The left side of the blue fabric is folded, so I didn’t cut that end.
Below: Meet the old cover. Pretty bad, right?
I folded over the open end of the new cover and ironed it down.
Then, I folded that edge under to make a hem. I did this before sewing the sides, because it was easier to work with this way.
Below: I sewed the hem.
Below is the new cover with the fold on the right side and the hem on the left. The fabric is placed right sides together (inside out)
Below: I serged the two long sides of the cover.
Below: After serging, I went over the seam with my sewing machine to reinforce it.
Below: Turn the cover right side out and you’re good to go! I will note that I felt my new cover was too long, so I cut some length off the folded edge and serged that together.