Daisy Eagle footprints have staggered drill holes for ... easier soldering?

Hi folks. While using the Daisy Seed Eagle footprint I noticed that the drill holes for the headers are not aligned; they are staggered instead. I assume this is the same idea as: https://www.sparkfun.com/tutorials/114. I think I’ve also seen this called a “locking” design.

I’m using the library from https://daisy.nyc3.cdn.digitaloceanspaces.com/libraries/Electrosmith_Boards.zip with Autodesk Eagle 9.6.2.

A screen cap in Eagle board designer and the Manufacturing view:

In theory, this all seems fine, but I’ve never used it in practice. It feels like a solution in search of a problem to me, as I’ve never had trouble soldering headers in place. :person_shrugging:

Has anyone here had any issues (other than a curmudgeonly obsession with aligned drill holes) using the Eagle footprints provided by Electrosmith? Just curious as I’m about to send some designs for fabrication.

Cheers in advance!

I’ve wondered the same thing, in a similar curmudgeonly way, I think, but never had any issues. In my experience, it hasn’t helped us much with soldering headers as I might like.

Since the header pins are nice and thick, I don’t like to bend them, so sometimes holding the 20 pin headers vertical and getting one quality solder joint at the same time seems mildly acrobatic, but that’s probably just me.

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Yep, I can understand that. But I’ve just stacked the headers on a breadboard for as far back as I can remember. It also acts as a heat sink. I suppose it’s just a personal preference thing, though. I’d rather slice my own bread, for example. :bread: :slightly_smiling_face:

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