Hi;
If you've ever seen the assortment of trowels a brick-mason uses , you will find a lot of palette knives in those shapes .The one that is my go to for tight spots is shaped like a cake trowel . I will check more , I just returned from my local Hobby - Lobby .
They have nine different shapes , both in long and short blade surfaces .The thing is , wether filling cement join gaps , or preparing a surface for new panel lines , these can be helpful in many applications .
Another simple applicator , believe it or not is the ubiquitus plastic knife you get at a burger joint . File off the teeth and it's perfect for doing wing fillets ! T.B.