An icing gun will get the job done. They are more precise then the standard bag with the tip for icing. They work great for writing names on cakes. They can usually be found in the cake aisle at the supermarket and run for under $10 the only setback is they require more clean up.
Everyone has a different thought on what makes a perfect cake. Any recipe followed exactly, baked at the right temperature should produce a proper cake of that type. Perfection is rarely achieved in anything. *
That depends which tool you're talking about. The knife-like one that is used to spread the icing is a spatula. A decorating bag or parchment cone is used to hold and push icing through decorating tips to make designs and shapes. Various other tools are used for smoothing or making lines in icing.
Usually a cake knife.
when you hang drywall, you have to tape off the seams with paper tape and "mud", then "float" the mud smooth. the drywall float is a flat metal tool on a handle that you drag across the mud to smooth it out, like when you smooth out the icing on a cake
A trowel is a flat, steel tool with a handle, meant to "butter" on drywall grout, or to smooth the surface of newly-placed concrete, much like you smooth out the icing on top of a cake. "To trowel" means to smooth a concrete or grout surface, using a trowel.
You can't just the cake, you can only eat it to make it into shorter slices, surprisingly.
A star bakery tool, often referred to as a star tip or star piping nozzle, is a pastry decorating tool used to create star-shaped designs on cakes, cookies, and other baked goods. It features a star-shaped opening that allows frosting or icing to be piped in a variety of decorative patterns, including rosettes and borders. These tools are commonly used in cake decorating to add texture and visual appeal to desserts.
paddle
by putting hot water
There are a great many companies that produce a tool caddy for purchase. The most popular on the internet right now is the Wilton tool caddy, which stores tools for cake decorating.
To level a cake for a perfectly even surface, you can use a long serrated knife or a cake leveler tool to carefully slice off any domed or uneven parts of the cake. Hold the knife or leveler parallel to the cake layers and make gentle, even cuts until the surface is flat and even.
A cake breaker is a tool that gently separates cake without crushing or compressing it. Cake breakers are used primarily on angel food cakes, and are also useful on very moist or sticky cakes, Bundt cakes, and any layer cake. They can also be used on a flat cake or sheet cake to portion out pieces; after breaking, a knife or cake server is used to easily cut and remove the pieces. Cutting through a line made by a cake breaker is easy and leaves a nice looking edge.