Let's say you own Ikea's discontinued Tobo unit, which features sliding glass doors. And let's say you lose or break one of these four funky-looking, complicated components: That little plastic gewgaw is what holds the sliding doors in place at the top. Without it you're screwed. The product is discontinued, so Ikea doesn't support it anymore. Time to throw the whole thing out, right? Thankfully, no. "In my free time, I like helping people by making 3D printed replacements for their...


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