[bharada]

I have an Acrylic dealer near by (Tap Plastics), but they don't sell anything with 1/8" wall thickness. Bending the 1/16" wall tube is difficult as it collapses very easily. Also, using a curtain rod spring doesn't work real well as a bending spring as the tube tends to conform to the shape of the coil making it near impossible to extract the spring without cracking the tube.

 

[bharada]

I packed it with play sand which works, but you need to keep inward pressure on both ends of the tube while making the bend. Otherwise the tube has a tendency to stretch which renders the packing material useless.