Help with drilled pad sizes

[Anonymous]

I'm new to Eagle and circuit designing software in general but I haven't found a straightforward solution to my problem.

I have a board designed to be exported and printed to a Voltera printer and I am having problems regarding the drill hole size on the pads.

I need all the holes to be 1.6mm for all components but I'm not sure how to change the hole sizes. All of the parts I am using are from the managed libraries except one slot for an Arduino Nano. I've found the options for drill and pad size in the component footprint but I don't know what units Eagle uses for the drill size or if this is the proper way to change it.

Again, sorry if this is basic but I haven't found a simple answer for it yet that I can understand as a beginner and any help is appreciated.

[Yura.Ivanov.VLuki]

Use "drill-aid.ulp".

[one-of-the-robs · Accepted solution]

I don't think "drill-aid" will help here as that's intended to help centre your manually applied drill by shrinking all the holes to a smaller size.

The drill size is not one of the things where the DRC rules override the library, so I think your only option is to create your own set of libraries with big holes. Don't try to edit the shipped managed libraries - they're read only reference copies. Make your own and adjust that. There's a ULP (and, I think, a menu command) that will create a new library containing all the parts used in your design, and optionally update the design to use that library instead of the source ones. Then you can go into that library and change all the drills.

The drill sizes in the editor are specified in the units selected for your current grid. If you want them to be in mm then type "Grid mm;" into the command line.