Metrics?
I think I may have asked this before and if you remember please forgive.
My oldest son and I like to bake with each other so when he comes in to visit we talk about it mostly, we usually do not have the time. He is a bit closer now and we do have the time.
He has studied around looking for really interesting cakes, probably way to difficult but he is interested and so am I. NOTHING is in US measurements so we thought we could convert but then figured we were likely going to have to guess on way too many things to do this well. We are beginners in some ways and these are complicated but hey, why not give it a go?
For the life of us we cannot find a site where we can buy, in metric measurements, cake pans or anything else we need. Every time we find what we want it is converted into US sizes to purchase. He really wants to do it all in metric and quite frankly, since we are doing this for fun and are total amatures we would be likely to really mess things up getting all crosswise working together to figure it out.
Why do pans we find in metric sizes become only available to us in US measurements when we go to order them? We don't care if we have to buy overseas, these pans and the time together are our Birthday presents to each other so price has little to do with it within reason.
To be clear, we can find them on the Internet but as soon as we try to order it all gets converted to US measurements. I hope someone knows because we are both so frustrated.
= new reply since forum marked as read
This is enough to help. He really wants to do it like the recipe but he has not done a lot of cooking or baking and just wants to do it so we will be OK. Of course getting the actual pans would help but we will use what is here that you all have provided, thanks so much.
If we actually have a success I will post it. He does not want to bake a cake but a CAKE. Art cakes I guess, very cool so we will try. 
I have a feeling that it takes a lot more than following a recipe. It will be fun to do anyway and I love having reasons for him to be here more.
you might consider suggesting to him that it's first important to get the basics of baking a good quality cake (moist and flavorful, different types and experiment making the different icings and which might be best for which types of cakes) under his belt before delving into anything extra fancy. That would keep him from possibly becoming discouraged that it's more difficult than it needs to be, while also suiting your purpose to have him around more often.
Good luck and I hope you both enjoy this collaborative effort. 
