On 12:28 AM 4/03/2004, Leo Potjewijd said:

I just discovered something strange:

I like my vias tented so I keep the tenting checkbox in the default via settings dialog checked.
While interactively routing a PCB I noticed that the automatically placed vias did not get tented (and the forementioned checkbox is still checked)....
I do not want to end up with a board that has some vias tented and some not, and the global edit on the complete board afterwards is too easiliy forgotten.

I'm sure I'm missing something obvious, but haven't a clue....
Please help me out, guys..

There are two ways to force tenting on vias - or at least there are two places to control the solder mask expansion. The via has a tenting attribute and there is a design rule that controls solder mask expansion. I have no idea which has precedence, I would hope the tenting attribute of the via. However you may want to check, and play with, the Manufacturing-Solder Mask expansion rule. If you make the rule expansion ridiculously big do the auto-placed vias follow the silly expansion?

Before we had the tenting attribute you had to apply a large enough negative expansion to force tenting.

The checkbox being tented but the actual via being untented does sound very odd - unless there is a conflict between the rules and the tent attribute. Are the auto-placed vias the same dimensions as the manual placed vias? Are they both vias? The manual ones aren't free pads are they? (Just asking some possibly silly questions.)

What happens if you save as ASCII and then re-load? What does the ASCII file show for a tented and untented via? The ASCII records are not hard to read.

Not sure I have too many other ideas.

Bye for now,

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