After making the pants, I find it easy to attach the hip section for the elastic to each leg piece before attaching the two leg pieces. It is easier to do that than after the two leg pieces have been attached.
Mark the elastic (4 corners) and line it up with the 4 corners of the pants i.e. middle front, middle back, left side, right side. Easy to mark with a black marker. There are 4 panels to the pants.
This is a 5cm wide elastic. Here I took my measuring instrument to get the size.
Use the same measuring tool to measure the area required when you fold the elastic in.
Once you have positioned and measured, you are ready to serge the elastic in. Cut a wedge to position it under the serger foot.
Place the project under the serger foot using the wedge you’ve cut out. Stretch the fabric as you serger it onto the fabric. It can be a little tough and tricky.
After adding the elastic, you need to fold it over and sew it down.
Here I used my serger again, but I turned my side knob to 4 to widen the stitches. This is the inside of the pants.
I use my Bernina, foot 10, to sew in the ditch with the needle to the left, to stitch down the seam on the inside of the elastic band and make it look neat.
for the bottom of the legs, to do the seam, I do a basic stitch.
On my serger I replace the foot with a blind hem foot to serge the bottom of the legs. The finished seam needs to be on the inside of the pants so make sure you place it correctly.
Stitch down the seam with the special foot 10, stitch in the ditch with needle to the left.