Safety Hole & Shrink Wrapping

[Thaney Design]

After a few hatching problems with ducklings, I made a safety hole in the two eggs I have. Day #28 is tomorrow. They had both internally pipped. I have the humidity at 80% but am still concerned about shrink wrapping. Will my safety hole increase the chances of this? It's been about 24 hours with no apparent progress.

 

[BirdsBeesTrees]

They need to absorb their yolk they probably aren't quite ready to hatch.

 

[Thaney Design]

From reading a lot of articles I can see that this is generally a waiting period. I’m worried about the safety hole causing shrink wrapping—can that happen?