Drill Symbol limit exceeded - CircuitStudio 1.5

Question

Hi,

I´ve a problem when I generate gerber files from CircuitStudio 1.5 for a complex PCB.

In the process to generate gerber files, the CircuitStudio launch the next message error:

"Drill Symbol limit exceeded. System will switch to letter generation"

I think that this message error appears in GD1 layer. This layer its necessary to poduce the PCB?

The PCB in question have 4 layers and multiple pads and vias.

I have review the gerver files with a gerber viewer and I think thats its correct. Only, in some drills appears letter to indicate a drill zone.

It thats any problem to send this files to PCB Factory? The factory can be produced correct PCBs from this files.

Thank you so much for the help

mars01 · Answer

In the Outputs section make sure that beside generating the Gerber files you generate also the NC drill files. The NC drill files holds the drills data. To make the PCB the manufacturer fab will need the following layers: Top Overlay, Top Solder, Top Layer, Bottom Overlay, Bottom Solder, Bottom Layer, Outline, Inner layers (if any), Mechanical layers (if you have some cutouts or the like) and the NC drill files (plated, non-plated holes).

lamabrew · Answer

I've gotten that warning too. It seems harmless. OTOH when I look at the PCB hole report I see there's a lot of drill sizes that are "slightly" different and I try and reduce that, either by editing my library footprints or just forcing holes to be a common size (i.e. 1.00, 1.01, and 1.03 mm can all be 1.0 mm) from inside the dialog/report. I assume the fab house probably already deals with that but I would rather send as clean of project as possible. As well as sometimes some of the oddball ones I find turn out to be not quite right. YMMV Brewster

Drill Symbol limit exceeded - CircuitStudio 1.5

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