I'm looking to use scaffold poles as fence posts by digging a hole then holding the poles in place with cement. I found a earth auger tool (45mm diameter x 600mm long). This fits to a standard drill. It has saved a lot of time when digging holes for the scaffold poles to go in. The earth auger tool is similar to the tool at this Ebay link: https://www.ebay.co.uk/itm/16463247...D/JbmsmJ6VYiNrd6A9Cm1rju1dYs|tkp:BFBM-ob2sIlg Should I look to encase the cement in something dampproof like a plant pot/pipe/DPC? This would protect the cement from the surrounding earth.