CNC Milling

Clamping down material when CNC-Milling

this is a series of questions aimed at people who use CNC machines, and how they clamp down material. The end results should end with a prototype of an clamping device for CNC Milling. This is made as a School project, in collaboration with Makersupplies.dk
1.what is your gender
2.what is your age?
3.How do you use a CNC Milling Machine
4.How do you currently hold down your material when CNC-Milling
5.which material do you mostly CNC mill in? (you can choose multiple)
6.what is your ideal way of keeping your material clamped to the CNC machine when milling?
7.what is most important for you when choosing which clamping device to use? please choose only the 3 most important
8.do you have anything else that is important for you when choosing a Clamping Method?
9.what price range would you pay for a clamping device for your CNC milling?
10.anything else you want to say that has not been asked?