My sister's watch strap broke, and the replacement strap I ordered online took a long time to arrive. So, I decided to design one myself, and the result was not only beautiful but also modular.

Materials you will need:

•   ice watch model 013425
• ~ 10g of filament - for printing the case and links
• ~ 20 office pins - for the hinges between the links

Print guide:

      print settings:

• Layer height: 0.15mm
• Nozzle diameter: 0.4mm or less
• Supports are required
• Avoid an elephant's foot
• print in the orientation as shown in the picture below
• Print two links to verify if your print settings create functional parts

1. Print one case
2. Print about 20 links - adjust the number depending on the circumference of your hand
3. Print the end links (end_a, end_b)
4. Print the clasp (clasp_f, clasp_m)

Assembly guide:

• Cut the office pins to 14mm length
• Insert the pins between every two links and between the end links to the case
• Insert the watch body into the case

Pros:

• cheaper 
• customizable 
• no need to wait for a delivery company

Cons:

• not as comfortable as the original rubber strap

Remix:

By scaling the links in the slicer, you can create a strap that will fit any watch. Additionally, I've included an .f3d file so you can make any modifications you want.