Round to Square Tube Connector

thingiverse

Im sure there is very unlikely to be someone else looking for this part but here it is anyway: This is my first attempt at a functional 3d part. I needed to attach a 1" square tube perpendicularly to the end of a 1 1/4 inch PVC pipe (actually I needed two of them). This is my first attempt. There are two versions. The top and bottom are held together by an M6 nylon nut and bolt. There is a slight recess in the bottom to allow the bolt to sit flush so the bottom part can still fit into the PVC. There is an alternate version with a slight angle to the opening for the 1" square tubing (~7 degrees). I have not printed this yet. UPDATE: I have printed this, in PLA, and although a tight fit, it did fit in my 1 1/4 PVC and perfectly fit my 1x1 tubing. The print quality was terrible though. Update #2: I redesigned the bottom bracket just a little bit, and designed some custom pins and clips to hold it all together instead of waiting on nylon nuts and bolts. These are all visible in the black PLA print photo. The pin and clip are sized to hold the bracket correctly for my 1x1" square tube. N.b. for my use, most of the weight is born by the bottom part of the bracket press-fit into the pvc tube. The top part is mostly only helping to keep the square bar from jumping out of the bottom, so the force on these plastic pins/clips is relatively low. They are weak (in PLA) and will not survive any meaningful force.