My models are currently not available for sale through shapeways. I got rejections on 2 models which I did have successfully ordered in the past when somebody else bought them. This is happening to other designers, too, you can read more about that in the discussion forums. I don't have the resources to fix a model in a timely manner when it suddenly can't be printed any more (this is just a hobby for me) so I decided to remove the option to buy my models directly.
I have kept the download option, so you can still get the STL file from the model pages at shapeways, upload them as your own model (units are in millimeters) and order them there. If the model gets rejected try to fix it yourself, you can get the original SketchUp model files from the individual model page on my website.
I hope that shapeways will one day find a solution to this rejection problem, so that I can be sure all my models stay printable.
A Z scale (1:220) model for a zebra crossing sign hanging above the street. It is designed for 2 small 0402 LEDs, a yellow one to light the street below the sign and a white one for the sign itself. To complete this model you also need a pole, available as another model. Read the build instructions on my home page.