The Routemex signal business is for sale. The business closed down last summer and a sale was agreed but the individual who was going to purchase could not proceed due to health problems so it is still available.
Although individually the manufacturing processes are not too complicated, there is a lot of them and this business would be best suited to someone already in the modelmaking trade with hands-on experience of CAD design, Pressure Casting resin, and 3D printing. Soldering skills and the ability to work with very small components in confined spaces are essential.
A full list of what is being offered can be obtained by emailing me: routemex@gmail.com And I will send you a PDF.
John Neville