I usually rout tiny V-grooves in my cupboard doorways that require sanding earlier than ending. Sanding the grooves with simply sandpaper folded in half wears out the sandpaper shortly. It’s additionally floppy, making sanding tough. I lately found that utilizing a 6″ putty knife to again up the sandpaper gives extra rigidity to sand the grooves evenly and take away undesirable ridges. The sandpaper lasts longer, and the entire sanding course of goes quicker, too.
– Dale Miller