[Whosawhatsis] posted constant volume models on Youmagine, as reported in a previous log post. One of our teachers of the visually impaired gave us feedback that the points on that version were, well, too pointy for a blind kid to handle comfortably. We wrestled with options. Truncate the conical models a bit to make them a bit squared-off? We tried that but since the printer will drool a bit at the end we still got a pretty pointy point. Also, there's the issue that we did not want to distort the shape too much, since truncating cuts off some volume and might leave the wrong impression.

What [Whosawhatsis] did next was to add a different version of the models that have a little ball on top (see the image that follows) on the two models with pointy tops. We figure this will keep the original shape (since these are, after all, to learn about geometric shapes) without an uncomfortably prickly top. We are waiting to hear what the feedback is on this new one.