MakerBot Print is our newest print-prepration software, which supports native CAD files and STL assemblies,
allows you to interact with all your printers via the Cloud, and many other exciting new features.
1-1/4 PVC pipe is 1.66" OD x 1.36" ID, whereas these parts are designed to fit a 1.50" OD x 1.38" ID tube. If you sand the mating curvature of the parts to match the 1-1/4 PVC pipe, they could be made to fit. You will have to be creative with attaching the folding stock due to the additional wall thickness.