Need help from the higher voxelmancers

[Guest Rooster7755]

So i have been on a long journey to find out how to  build custom angled beams , I finally got it to where I have one block that stacks and the angle will follow but if i just paste it the smaller tip part goes away but if i hold shift paste the back half goes away. what am i doing wrong here (see image below)

[Portavar]

If i had to guess, theres no gap between  the blocks so the upper left points of the middle block are being pulled over to the lower right points of the top block. gonan need to use offset points to make that shape fit together with a hidden air block between them so they dont touch but appear to touch.