3d shape visualiser
> Ah, but nails are sized by "d" rather than "p". 16d is usual (3 1/2" > long). The reason the number go up, along with size (16d nails are larger > than 8d nails) is that this was the cost/100 nails, so that you needed to > spend more to get larger nails. That's what I used to think, but it turns out it was the weight per 100, not the cost per.