Hello Burl, you say you have difficulty making two items alike, well you should see my rejection rate on these louvers. I did consider using a mold for the louver sets, but I wasn't sure how to hide the mat they would sit on after installation. The paddle latches from Shapeways may I think be from one of your designs, but they were the key to getting going on these engines. I knew I could produce the louvers and hinges but the latches would have certainly been a show stopper. Anyway if they are your design, thank you.
I'm closing in on the end of that task now, but if anyone else takes on louver sets I'd sure be interested in seeing the results.
This is another earlier photo of the trio.
I've made the exhaust stacks as a single component so I can lift them out to access the switch panel, when I get that far. Building and fitting the light bulb holders for the ends is going to be another challenge, but that too will get resolved. The holes at the ends of the hoods on the side are for the marker lights, these will be covered over with the lens holders supplied by USA Trains Parts Department. A great resource I might add.