Re: 1/12 scale R-40-23 reefer Dreadnaught end
When I was visiting the Kato factory I reviewed the CNC milled positive aluminum trial of the N Scale RDC body.toggle quoted messageShow quoted text
Over the 3D aluminum object we discussed the roof curvature and marked it up for correction to the 3D CAD tooling files....
The following morning (!!!!) I was presented with the first plastic test shots of the corrected body shells!!!
Reviewing 3D renderings of designs is vastly preferable to trying to absorb and index twenty or more paper drawings covering all the parts in a product. You can peel away elements to look at every aspect of an assembled model and rotate in it to view at from any perspective. The 3D design programs have built-in fit and interference features that make engineering and review much simpler.
It is still possible to miss nuances of contour but still it is a lot easier than looking at old fashioned multiple plane views on paper prints.
The review process within a company and the interaction between the project manager and the engineers at the factory is critical. If the engineers do not make recommended changes the product suffers. Too many times the designer (in China or even in the US) won’t listen and insists on doing it their way, even though the reviewer has direct end user input or experience.
Importers need to write detailed outline specs covering the full range of quality, performance and feature characteristics to avoid problems, but too many put all in the hands of the factory and are surprised when products don’t measure up to what the market expects.
Railroad Model Resources
On Dec 12, 2019, at 11:42 AM, Dennis Storzek <destorzek@...> wrote: