If you have searched online stores like ebay_dot_in to buy ab-wheels in India, you will notice that they don't come very cheap. Their cost, which is typically around Rs 500, is disproportionate to the simplicity of the device, and they cost even more if imported (a few thousands of rupees). That's a lot to spend on a device you can easily make yourself for Rs 150 or less. Plus, only the one wheel version is available for sale. Inspired by Ross Enamait's four wheel alternative, I set out to make one myself. Here are the articles required and the steps for construction:
Step 1: Articles needed
1. Four 'bicycle balance wheels' made of plastic. They are cheap and are easily available in cycle repair shops in India. Diameter of the ones I'm using is 10.7 cm and width at circumference is 3.2 cm.
2. Two cylindrical iron/steel rods. Diameter 1.25 cm.
3. Transparent cello-tape.
4. 7 meters of thick, cotton rope. (They are typically used to tie mosquito nets to bed poles or nails on walls. If you are living in Bengal, ask for 'moshaari taangaanor dori', i.e. rope to hang a mosquito net)
5. 2 meters of cotton thread.
6. some newspaper
7. a pair of scissors
8. a blunt pencil