Countersink vs Countersunk holes

[Julio_Soto]

What's the difference? For automatic labeling purposes, I am considering using the countersink hole definition for blind holes since AS does not have a way of distinguishing between a blind tapped hole vs a thru tapped hole.  However, I have no idea what a countersink hole, and I don't want to use it without knowing its purpose. 

I found this thread but there was no answer. I'm hoping I can get an answer this time 😉

https://forums.autodesk.com/t5/advance-steel-forum/countersink-hole-definition/m-p/8727374

[Sebastian_Eiche · Accepted solution]

as I know the countersunk hole is always through the whole material. So if you have a plate with 10mm the hole will have a depth of 10mm.

By using a countsink, the hole could be limited so this is what you called blind hole, it's just another naming in Advance Steel. 
Both holes need different tabs for their creation

[Julio_Soto]

I see what you mean. I feel like the blind hole and countersink could be the same object type. The only difference is the alpha parameter.  If you leave alpha 0, then a countersink looks and functions exactly like a blind hole.

It's funny, you just gave me an idea. What if I use the countersink for the pilot hole of a threaded hole and then make a threaded hole on top of it.  It actually looks like a halfway decent blind tap hole lol.  I wont do this myself I was just having fun haha. Maybe one day AS will be able to add blind threaded hole objects.

BTW, on the right is a countersink hole with alpha=0

[Sebastian_Eiche]

The problem is: two holes at the same place--> error in the NC files, one whole will be define with a * so this line will be not recognize from machines.

The most machines have problems to create a hole where another hole was already created.

It looks maybe nice but there're a few things which had to be seen too: DXF, NC file...what happened on drawings? Which one should be labeled?

[Julio_Soto]

Agreeed. I know there would be problems, that's why I said I wouldn't use it.