This is a parametric design of a cord maker (sometimes associated with the Japanese Kumihimo technique). The default version uses 7 strings.

Bonus, but not required: There's a spool to hold the string; this prevents long strings from tangling.

Instructions:

Preparation:

• Print the cord disk. (Optionally print 7 spools)
• Cut 7 strands of string. (Optionally attach the strings to the spools)
• Align the strings and tie a knot.
• Pull the knot through the center hole.
• Distribute the 7 string across the 8 notches… one notch remains free.

Braiding:

• Hold the free notch towards you.
• Count three to the right. Take that string and place it in the free notch.
• Rotate the disc so that the free notch is at the bottom again, count to three and place it in the free notch.
• Repeat.

Tips:

• The tension is a determining factor in the resulting braid: Try to keep it constant. The spools aid in this, as they provide a constant weight.
• If your string is too thin: Double it up multiple times.