Christmas calendar The walls of the church have a brick structure and require you to print the first two layers slowly. I have used magnets in this single drawer. These just need to be pushed up from the bottom. The magnets I have use 10*1 mm. there should be room for 1.5 mm. when you print the key itself, pause it to get magnets inside the print. I have made plenty of room for different types of magnets. REMEMBER to turn your magnets the same way. This is my first model, so bear with me.