Rapid Technique: Preparing Plastic CNC Milling "Blanks" for Parts Used inPrototyping Scientific Equipment
Richard H. Siderits MD
Step 1: What is a Milling "Blank"?
When milling a part for a prototype piece of equipment, it is often useful to start with a piece of material that is not much bigger than the part that you are making. This is called a Blank. Using blanks, especially with Computer Numerical Control (CNC) systems, can reduce the amount of time needed to clear excess material during the milling process.
We describe a method for making plastic milling blanks for CNC milling operations and for making a "Jig" that helps place holes for conveniently mounting the blank onto the milling machine's table.