3/4" EMT Sleeve for telescoping poles
thingiverse
Modeled this for crafting telescoping poles from 3/4" and 1/2" EMT tubing, ideal for DIY awnings and other projects. This sleeve fits snugly onto a 3/4" EMT tube, allowing a 1/2" EMT tube to slide smoothly inside, providing a more secure fit since the 1/2" tube can be loose within the 3/4" EMT tubing. Slide the sleeve onto the 3/4" EMT tube and tap it down until it's securely seated. Next, drill a hole through the sleeve and insert a rivet to lock the sleeve in place. To ensure a smooth fit, I needed to carefully file down the inside of the rivet so that it clears the 1/2" tube.
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