Industrial Magazine on Instagram: "It’s a hand-operated plaster applicator that creates a uniform, adhesive first coat on concrete walls. --- ⭐ How This Manual Tool Works 1. The tool has three parts: A metal perforated plate (the grid) Two rollers / rods on the sides A handle on the back No motor. No pump. Just physical pressing. --- ⭐ Step-by-Step Operation 1️⃣ Mortar is loaded onto the grid plate The worker places a lump of mortar on top of the perforated plate (as seen in your image). 2️⃣ Wor