These are customers who have been buying resin kits over a period of the last ten years or more, a very reliable market. I know most of these people personally. The advantage of producing different variants of one model is what gives Shapeways an advantage over resin, even at a higher price.
However, it looks like I have to forgo the advantages of Shapeways, and look at resin production, because these models cannot be engineered to take any 3D orientation. They can go in one orientation only. Wrongly orientated model buses suffer a lot of breakage under polishing, due to the inherent weakness between layers. Vertical seat frames and stanchions shear off, and cannot be printed thicker without going too far overscale. They didn't break with the correct orientation. In addition, wrongly orientated models suffer from unsightly layer lines all along the length of the roof area, which are absent if the model is orientated correctly.
Already I am left with a handful of models that were orientated wrongly, and returned to me by the customers as sub standard. That's all right with a few models. It's no good if I start releasing models with a potential of a hundred each or more.
I have already produced a few models for the small Irish market. Those models have been seen by the much larger UK market, and there was much excitement initially about the possibilities of using Shapeways for model buses. However, if I cannot guarantee print orientation, this market will be lost to Shapeways, and it will go to cheaper but more restrictive resin production instead.
I have been in discussion with a resin manufacturer, and a run of a hundred model buses is planned before Christmas. That is a hundred sales Shapeways could have had. It's a pity, but at present, I see only a small requirement for Shapeways models, due to the unreliability. I cannot afford to soak up the cost of returned models, or answer for sub standard quality.