CNC Milling Machines

Posts Tagged ‘small’

I am interested in a setup that can make small parts out of most materials – up to and including brass or aluminum. Smaller is better – none of the projects that I can think of are wider than 1″-2″ or longer than 4″. For example, I might want to engrave letters onto square 1/4″ rodstock. Or make jewelry. Or … I don’t know. Make little stuff. It would be a great hobby but space is real limited!

I considering buying a CNC router table (max material cutting size is 1200mm x 800mm x 90mm). The website indicates the blade holder specfications are 3.175mm, 4mm & 6mm. Does this mean that the minimum router bit size I can use with this machine is 3.175mm? Basically, I want to cut narrow straight slots in a sheet of MDF and I need them to be as narrow as possible. Does this mean that this machine cannot cut slots more narrow than 3.175mm?

Finally, the sheet of MDF would be 30mm thickness. If the machine was to router/engrave completely through the sheet e.g to a depth of 30mm, would the cut be straight and clean with no tool marks on the cut sides of the MDF? Would a router bit with a thickness of 3.175 struggle to do this?