Maggie,

Branding needs to be done with careful thought because, once you start rolling with something you are going to want to stick with it as business starts to build. You don't want to just pick any ole' name to get going and then change it in two years when you realize that wasn't the best choice. Your initial post asked if something like "3dgirlz.com" (before you checked it out) was memorable enough. Not much about a name like that identifies you as a 3d printer. "Girlz" is going to be attractive to teens looking for photos of booty, not people looking for 3d printing. Yes, it's memorable, but for all the wrong reasons. So, as you search for a name and a path to do your branding, be sure that the name conveys the correct message. It can be clever but not silly. You'll be competing in a professional arena and you don't want to come off as inferior or not serious. A good way to go about it is to list a bunch of names that you think have merit and then show them to friends and family. Don't even tell them what it is for and ask them to pick out the names that they think are good. Then tell them what you are doing and go through those names and narrow it down.

Just think about it a lot before you lock in on a name you might regret because it takes too much work to get a business up an running. And once you have that momentum, it's hard to get it back if you change your name and no one knows who you are anymore.