Two beginner questions about align correctly

So, I need this guy (left)

https://i.stack.imgur.com/ht79G.png

be perfectly alligned with this another one (right) by its angle on top, like this

https://i.stack.imgur.com/H8C1j.png

That align isn’t perfect as you see

Aligment 2

I need this other guy

https://i.stack.imgur.com/tiGks.png

Be perfectly parallel to the angle on the other object

https://i.stack.imgur.com/MhLdq.png

Like this

https://i.stack.imgur.com/kotwa.png

I’ll appreciate any kind of advices and methods, Thanks!

Snapping functions can’t snap to the intersection of the transform and the snapping element normal, unless it happens to be in 90° angle, which is useless.

Would either have to cut with the knife (K) for example to give another suitable snapping target, or use different cutting options to make the form



Duplicated the top and bottom faces from the target and made them bigger. Those are used as cutting geometry. Used ctrl+F -> intersect (boolean) for that. Could have also used intersect (knife) and knife project https://www.youtube.com/watch?v=lpgElM1KMHQ https://www.youtube.com/watch?v=Av8SiuDrvjM

The second one is easy. Face snapping in object mode, with rotation option enabled. Could then offset the object by moving it along the object’s local axis. That’s done by having transform orientation set to global or local from the header and then pressing the axis key twice: G, Z, Z moves along local Z. With manipulators that needs to be set to local.

Theres too some addon you can utilize for somplify it ( snap CAD addon, snap utiliese etc ) … Some are free, some are not… i let you do a research on Blender Nation .

Theres too some addon you can utilize for somplify it ( snap CAD addon, snap utiliese etc ) … Some are free, some are not… i let you do a research on Blender Nation . But as it is, i think JA12 have nicely show you the workflow for it