====== Mylar Mask ======
[[purchasing_supplies|CAD art]] will print your mask design directly onto a transparency (mylar). You can draw features down to 10 micron resolution.

These mylar masks are flexible, so you need a glass backing for contact printing. Rick has attached the Mylar mask to a 4x4" glass plate.  He uses selotape to secure the mask to the glass plate, with good results.  That way he can easily switch Mylar masks and use the same 4x4" glass plate.  He purchased the glass from the hobby store near Fred Myers. "You need to make sure you get a fairly thin piece. If you get to thick of a piece of glass you will not have enough adjustment on the aligner to get the correct separation while aligning."