Loading Drill data (on top of the Gerber data)

• First load the Gerber data file from one of the layers of the board  File load [F3] or
• drag & drop the file into the Viewplot icon.

• Next load the Excellon Drill data file  File load or [F3]
• when the data is correct it will be recognized as Drill file type, press OK to continue.
• Note: The data file can be viewed by the option View File

• The Load drill file window will pop-up
• The drill format can be set here. In the header of the window there is a preview from the file.
• The Number format and units can be set here.
• When you unsure about the file format the Hint by program function can be used to find the possible format.
• Press OK to continue.

• When no Tools loaded yet, a message window will pop-up with the note that the tools not exist.
• Ignore these message and Press OK to continue.

• The Drill file is now loaded an can be seen in relation with the Gerber file that should correspond with these.
• In this example it is very clear that the file format wasn't correct from the Drill data. (Drill in yellow)
•  
• To reload the Drill data the current drill data has to be deleted first
• Go to the drill layer and select everything by: Select all and Delete.
• Now the previous drill data is gone the data can be loaded as before with a different format.

• The new data with the new format settings looks much better (format changed to 3 2)
• But all the drills have the same size because of the fact we didn't load the Tools yet. (default 1mm) 

• Load the Tool file with Load files or F3 as above and OK
• This will pop-up the Load drill Tools window
• Here we can define which part of the file should be read in and in which order
• The info lines in the header from the file can be skipped from reading by setting the amount of lines
• under Info Lines
• Then the column for the Tool number and Diameter can set as the Units
• press the Read drill tools button to continue.

• After filling in the right settings from the drill tools the window

• A message window will pop-up to inform about the amount of drills that have been found in the file.
• If there was a Tools file loaded before a message will pop-up to ask if the drill layers can be reloaded.

• The reloaded drill data is now correct.
• Note:
• The drill tool file can be Reloaded without deleting the previous one in the design and the drill file is
• reloaded automatically.
• Tool file and drill file can be loaded in one action as well.