Try to work quickly to avoid applying too much heat and deforming the plastic surrounding the holes.īecause the M5 heat-set inserts are fairly large in terms of the amount of metal the soldering iron needs to melt, it can take a bit of time to get the insert hot enough to set into the plastic. The heat from the soldering iron should melt the plastic, allowing the heat-set insert to set into the part. Press the heat-set insert into the plastic part with the soldering iron. Then, with the 3D printed part clamped in place, hold the heat-set insert with the hemostats just over the hole. To install the heat set inserts, warm your soldering iron to 230 oC. For this last piece of equipment, I am using a great helping hands tool from QuadHands. To install the heat-set inserts, we will need a soldering iron, a pair of hemostats, and a way to hold the 3D printed covers steady. Once pressed into place using a heat source, the brass inserts can be used to fasten together different parts to create strong connections. Heat-set inserts are a convenient and fast way to add threads to holes in a 3D printed part. Most parts of the robot arm connect together using heat-set inserts and machine screws. Shoulder Belt Tensioner Right Quantity: 1 If you don't have access to a 3D printer, or if your 3D printed lacks the build volume for some of the larger pieces, 3D Hubs is a fantastic resource for getting 3D printed parts made quickly and affordably.Īll of the STL files you will need to print the parts are available in the GitHub repository for this project. Some of the parts are quite large and will take some time to print. The entire structure of the robot arm in this Instructable is made from 3D printed parts. Therefore, the cost is likely to be quite a bit higher than the actual cost of the materials used. However, the majority of the parts, especially all of the hardware, is typically available only in packages of much larger quantities than is required for this build. The total cost for all the parts involved in building the giant 3D printed robot arm is roughly $600. This tab is a useful reference as you progress through this build in case you face any confusion about which parts are needed for any particular step. The second tab of the document lists the materials required for each sub-assembly of the robot arm. There are probably any number of sources for the parts, so feel free to shop around. I also provided a link to where you can purchase the parts. This tab lists every part, other than the 3D printed parts, needed to complete this project. The first tab of the document is the actual bill of materials. You can access the bill of materials by clicking the Google Sheets link below. Depending on when you order your parts, the prices and availability might be slightly different, but the bill of materials should be mostly accurate. The document has two tabs, the first lists all the parts required to build the 3D printed robot arm, along with sources for parts and approximate prices. Below is the bill of materials for this project. A fairly large collection of parts are required for this build.
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