I’m familiar with an older building product called “chipboard”, but it certainly wasn’t anything like cardstock, as it was for full-size building.
Traditionally, the term “cardstock” referred to Strathmore Board or a somewhat similar product known as Bristol Board. It was used, usually with wood framing, for scratchbuilding structures back in the days when I started out in model railroading. In those days, you could also buy books of structures printed on cardstock. Carefully cut-out using a sharp blade, then folded and braced with stripwood, a modeller could have decent looking structures at a reasonable cost.
Much more accomplished modellers (Jack Work is the one who springs to mind for me, but there were lots of such craftsmen in those days) used it, with stripwood, for scratchbuilding, and the results were simply amazing.
Both of the types mentioned should still be available in art supply stores, and both should also be available in various weights (thicknesses).
I have always thought of “Card Stock” as index cards or business cards. For the heavier cardboard material you are looking for, how about used packaging? Athearn BB HO car kit boxes for example. Or shoe boxes.
Check out the cardstock used for cereal boxes.Myself I prefer the 110 ib. card stock but then I always layer my buildings any way using at least 4 layers of card stock to get some realism in the way the building looks.
It has been called chipboard long before somebody tried to call a sheed of lumber by the same name. Lumber might be particle board, or oriented strand board, but chipboard is a carboard product.
By definition, Chipboard is a recycled, low quality cardboard.
[which is why printers do not like to cut the stuff on their papercutters.]
Thus spake the LION, and while you may apply the word differently, the LION is correct. Him used to be a printer as a hobby. You know, hand set led type locked up in a chase and used in a platen press.
Personally I, too prefer the cardstock from cereal boxes, but I only use this material to build mock-ups. I prefer either wood or styrene for building the actual model. I keep a stack of flattened cereal boxes just for making mock-ups. Sometimes I do use cardstock though, for the base for roofs on structures with either strip wood or strip styrene as a reinforcement. One thing is: you can’t beat the price!
I remember reading articles many years ago about EL Moore and the card stock buildings he made. All black and white articles so never could see how well they really looked.
He did use a lot of balsa to make them ridgid.
I remember he used card stock but don’t remember exactly what type. I recycled all my old MRR magazines a few years ago.
If You have a Staples near You, take a look at their Poster Board/Illustration board. A lot denser than paper pad carboard, box cardboard. Great for scratchbuilding and structures. Also You can look at their foam board, there are many different kinds/sizes. I personally use Illustration board made by Royal Eco Brites 20x30’’ approx. 1/16’’ thick, both sides smooth, for just about all My scratch building projects, along with white pine wood that I cut Myself. Extremely strong structures.
I remember and article (but not where I read it) about a guy who built incredible structures using Dunkin Donut boxes. I don’t think my diabetes would tolerate the material gathering phase.
The Dunkin Donut boxes reminds me about this advertising card material I collected. Heavier than the donut boxes, its a heavy coated paper about .030" Great for all kinds of things. Not sure they are sending it out any more though. Keep an eye on your mail!