Input jacks. I am in the process of redisigning my control cavities to make more room without making them too much bigger so these is the last "tight fit for a wrench" input jacks.
Time to stand the grain up and help steam out the deep scratches. This is a hard maple top not a soft maple. It is a real bear to get the scratches out of with normal sanding. So we steam the top a few times in between sanding to help speed the process. Also helps for water based dye later.