Collect the pieces of EMT conduit that you want to make into a telescoping pole. EMT conduit is made of galvanized steel and comes in standard sizes. For this Instructable, we used three pieces of 1/2", 3/4", and 1" conduit. A 5-foot length of 1/2" EMT conduit can be purchased from your local hardware store for about $2.50, and a 10-foot length costs about $3.50, with zero shipping cost if you pick it up yourself!
EMT conduit standard sizes have the following diameters. The Cinch EMT Conduit telescoping coupling system is specifically designed to work with these sizes:
1/2" EMT conduit: 0.706" outside diameter, 0.622" inside diameter
3/4" EMT conduit: 0.922" outside diameter, 0.824" inside diameter
1" EMT conduit: 1.163" outside diameter, 1.049" inside diameter
Use a tape measure and a marker to mark the length of each piece of EMT conduit. Wear protective equipment (including safety goggles) before cutting the conduit! Use a rotary tube cutting tool (around $10) to cut each piece of conduit by tightening the tool on the conduit, rotating the tool, and continuing to tighten and then rotate the tool, until the conduit is cut.
On both the inner and outer edges of the cut ends of the conduit, remove the sharp edge using any one of the following tools:
If desired, paint or coat the cut pieces of conduit. Now we are ready to assemble the telescoping pole!
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