references for processing on folded sheet - neophyte

[Stemox]

Hi.
I'm asking again...
I took another exercise to try on the youtube, pasted as from imageI should make the shot highlighted on the left ... I follow the indications but I can not take the reference of the external wall from which I give the quotas. during the sheeting if I take the references in manual do not remain the reference of the folded wall (red arrow) ...I do not know if I explained
link of the video:

at the minute about 20:58, here click first on the base surface then on the inner edge (it should be the outside) then again on the base surface and when it closes it has the reference for the quotas ..to me does not succeed.

 

[320i S]

Well an exhaust so simple, you don't need to spy on the sheet, however I can't understand why you find it difficult to get the references, on this creo should give you maximum freedom.

put a couple of pictures of the place where you block

 

[Stemox]

320i s, thanks for availability

Of course it is simple, I follow the exercise only to understand the steps that are proposed, as in all cad there are several ways to achieve the goal.

I cannot take the references that are taken in particular the one highlighted by the arrow, which in practice corresponds to the inner surface of the bent flap

 

[DANI-3D]

you can use the command creates an entity from a edge, then delete the line and you only have the reference,

 

[320i S]

should there be no impediment to take that reference, did you try to build one as dani-3d said?

 

[Stemox]

I don't know how to do it.

 

[DANI-3D]

inside the sketch

 

[Stemox]

ok which is the command.. .
but when I go flattening the sheet gives me the possibility to take references of the object and in what case or I choose the base surface or a edge ... once accepted light and no longer gives me the opportunity to project the edge. If you see the footage in the minute I scored you can see what doesn't happen to me.