This would be considered a "low tolerance" in the world of 3D printed parts. The slightly smaller peg will allow it to move freely inside of the hole. The peg will have to be forced into the hole and will probably break the part.Ī tolerance of 0.50 would mean that a 5mm hole would fit with a 4.5mm peg. For example, if your tolerance is 0.00, then you would design a 5mm hole to fit a 5mm peg- with a desktop FDM printer, this won't work because the tolerance is too high. Think of the tolerance as the allowable limit of variation on the dimensions of parts that have to connect to other parts. In the Bottle Lock lesson, we're going to make a model that has two halves with a built-in hinge that will allow the two parts to move in a clamping action.īefore we go too far in designing all the features we'll need to combine the separate parts of a complex model (tabs, slots, posts, holes, etc.), we need to print a test object so we can see how precise we have to as we are designing the model.Īnytime you 3D print an object that's designed to interface with another object (whether printed, manufactured, or fabricated by another method), there is an important factor to consider: Tolerance. This will mean working with moving parts and assemblies. With a simple project completed, it's time to learn to make objects that are more complex.
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