![]() The 3D printed part with embedded nuts in view.ĥ. Usually, I will make a construction plane at either layer that the cavity will begin or end and create a sketch on it. Once you have your bolt hole designed, measure the dimensions of the nut you are embedding, and CAD in the cavity using the bolt hole as a centerpoint. Designing the Cavity: Designing the cavity for your nut is fairly simple. ![]() If you really want to get into this, square nuts would be a good investment.ġ. However, hex nuts are much more common and well known, so in this guide I’ll primarily be using hex nuts because likely that is what you are familiar with. Selecting Nut Type: When it comes to embedding nuts in your designs, square nuts are actually much more suited for this application because they are less likely to strip the inside faces of the cavity if you torque them too hard.However, if you have to due to other features in the part, you’ll need to remove them during the pause before you put the nut in, and ensure that no supports will be printing over thin air or on top of the nut once it has been embedded. Support Material: Ideally, you don’t want to use supports when embedding parts because they will get in the way.One of the most important things to remember when designing your part is what face it will be printed from and where the pause will be. Either way, the top surface of the part you are embedding MUST be below the print head as soon as it is placed into the 3D printed part, or else the print head will be sad and may run into it. If the top of the part isn’t flat, you’ll need to design a cavity that doesn’t touch the top of your part when printing. If the top of the part you’re embedding has a flat face, you’ll probably want to design your part such that the printer will print right on top of it, in which case you may want to lay down some glue on the top of your part. The Top Surface: The top surface of the part you are embedding is pretty important as well.A cavity that is too small, well, you won’t be able to fit the nut into it. The reported dimensions from a manufacturer will always have their own tolerances! A cavity that is too open won’t engage with the outside of the nut, so you won’t be able to thread a bolt into it. This should be of the measured dimensions of your part, just to be safe. 05-.08 mm gap on all sides gets you a pretty nice close fit for your part. ![]()
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