Let’s make a template:
Measure the patient’s arm. … Outside elbow To tip of longest finger.
The height of the sling needs to be two thirds ⅔ of the length of arm for comfort and support.
The three year old I’m making this for has an arm length of 8 ½ inches. add the 1” box Total 9 ½” length
That translates to 24cm length
The height is ⅔ of the length. (So we’ll multiply by 2 and divide the answer by by 3) 🤓 24 x 2 =48 48/3 = 16cm
Length 24cm Height 16cm
Place the box corner for the elbow on a fold and curve the corner opposite to this.
Once the template is cut out, ready the fabric and wadding. I use organic cotton fabric. It’s natural against the skin and washable. In this instance children like cartoon fabrics but I’ve still chosen a cotton.
Use wadding that is not too thick or too warm. I’ve chosen a 2oz polyester.
Cotton batting will become too warm and an hot sweaty arm under plaster cast is very uncomfortable 😣
Here I’m cutting out the fabric first then the wadding. A rotary cutter on a self healing mat is so easy to use and gives great accuracy on curves.