Ok, some lengthy answers coming up 😄 sorry! Tried to give full answers though!
How do you get the sides of a cake straight enough to be able to put a stencil on?
God, I hate doing stencils 🤦🏼♀️ all I can suggest is being meticulous in every step before you get to the stencil, do everything you can to achieve an even coverage!:
- Use ganache plates & a hot bench scraper to get perfect ganache
- Use spacers when rolling sugarpaste
- leave your supposedly perfect fondant to harden
- Adhere stencil to cake using for example Trex - try and get no gaps between cake and stencil - it’s hard!
- Apply royal icing and do a lot of touch ups! You can get gauze things from Evil Cake Genius which are meant to help but I’ve never used them.
Stencils are really tricky IME. Royal icing doesn’t leave a mark if you pick it off when dry, so I’d kind of score any rogue icing when it’s wet and then leave it to dry and pick it off using a sterile pin or cocktail stick or whatever.
How can I make really good buttercream that will hold it's shape when piped? I can never get it to stay!
I do a lot of piped buttercream flowers. I find ‘American’ buttercream the sturdiest and use a 1:2 ratio of butter:icing sugar. Room temp butter, mix til pale, add half icing sugar, then the other half, then if it seems a bit too stiff still then add a DROP of milk (or water). Mix again then see if you need more. Bear in mind that when you come to fill your piping bag, you should make sure you ‘paddle’ your buttercream so you get rid of the air bubbles (slowly mix back and forth), this softens up the buttercream as well so you don’t want to have previously added too much milk.
Also are you filling the bag too much so the heat of your hand makes your buttercream too soft?
What is the best way to stack tiered cakes without damaging the fondant? I'm making my friends wedding cake and assembling the 3 tiers at the venue is giving me nightmares!
What’s the reason for transporting it unassembled? (Just nosey, doesn’t really relate to Q 😄) I would suggest making sure the fondant has had a couple of days to harden up, so it shouldn’t really dent. To get the cakes out of the boxes I shift the box to the edge of the table, open the side of the box and then you can get your hand under the cake and lift it. You can use a palette knife to life the edge but I’ve found that can damage the fondant edges.
Hmm what else. Take any rings off to avoid dents. Presumably you’ll have ribbon/piping etc around the base of each tier so I wouldn’t worry too much about the bottom edges.
Instead of a palette knife and hand to get the cake on top of the one below, one place I worked used an angled pizza paddle eg
Cutter + Pizza Peel + Pizza Shovel Pizza Server, TedGem 3 in 1 Pizza Paddle with Wooden Handle 430 Stainless Steel for Baking Homemade Pizza and Bread Pies & Cookies Cake [[https://www.amazon.co.uk/dp/B07DFYB2VK/ref=cm_sw_r_cp_api_gXqrBbG0K1C4N?tag=mumsnet&ascsubtag=mnforum-21 this]] which was handy.