Marble run built into a lit wooden fairground

Oct 10, 2026 Last reply: 4 hours ago 2 Replies
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The starting point here is a love of ROKR style wooden mechanical models. The maker wanted a little amusement park of that kind and ended up designing Adventure Valley, a miniature wooden park built for marbles, and it is the biggest laser-cut project the maker has taken on so far.



Everything was modeled personally in Cinema 4D, then run through Illustrator and out as SVG for cutting. The structure is 3 mm basswood with an acrylic backdrop, and the base at the back is 3D printed. The rolling stock is 8 mm steel balls, moved around by two lifts, a Ferris wheel and a tower lift, that carry them back up to the tracks. One motor powers both lifts and also keeps the pirate ship swinging. A COB LED strip can light either the attractions or the backdrop.



The engraved details stand out for me: the park name and a tickets booth sign are readable on the model, and a Ferris wheel component carries the number 8. Most of the engraved 2D decoration came together with AI assistance, which the maker settled on as the quickest route to the project textures within the available time. Worth noting that laser cutting was new to the maker only 8 months before this, though there are years of 3D print design and vfx work behind it.



It was not all smooth sailing: the marble behavior nearly caused an abandoned build midway. The carousel is the main trade-off, staying flat in 2D with no room to spin, and a plan to make the horses rise and fall was cut when the time budget ran out. A video assembly guide is still to come.


Handing both lifts and the pirate ship swing to a single motor is the choice that grabs me. I would have been tempted to split that across two or three drives, so committing one drive to that much movement feels bold to me. Given how close the marble behavior came to derailing the whole thing midway, I think it paid off.

If the maker ever revisits this, colored wood sheets seem like the natural upgrade. The maker has already said colored sheets would be welcome, and tinted stock on the attractions would add color without picking up a brush. The engraved artwork could stay exactly as it is, just sitting on richer material.

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