Does anyone have experience with an edge sanding guide such as the Festool Positioning Aid (AH-ES-ETS/ETSC). I have not been able to find any other similar sander atttachment except for a 3D printed one by Iluka Tools which didn't get very favorable reviews. Apparently the Festool Positioning Aid can only be used with the Festool ETS 125 REQ sander and similar cordless sander. Unfortunately it is apparently not compatible with the ETS EC 150 that I already own. Just wondering if anyone has had a chance to use the positioning aid and how effective it is at edge sanding boards and maintaining the edge square and flat with the face of the board.