Here's a short video showing how to build a homemade Trượt băng trainer. All you need is a single piece of 3/4" thin wall (EMT) conduit, 2 rubber stoppers, a measuring tape, a sharpie marker, and a 3/4" conduit bender. The material cost is about $6, the conduit bender can be bought for $21 (+ a piece of threaded steel pipe for a handle), or probably rented. It takes less than 5 minutes to build. Or, you can buy a similar product on line for upwards of $90! Not shown: my lovely bride Rhonda behind the camera. This tool is great for teaching children to Trượt băng without the back-breaking effort of holding their hands while bending over for hours. There are Trượt băng trainers available from on-line vendors for prices ranging from $35 to $90, some are adjustable for height. This costs about $5 if you already have a conduit bender. You can also whip one together from PVC, but my guess is it is more expensive since the fittings are a bit pricey compared to the pipe.