Point of insertion for crown prep on typodont

[Anna.lario]

Any good technique to find the point of insertion for crown preps(long axis of the tooth on a typodont,struggling with that and keeping the bur at the same angle when doing axial reduction
Thanks!

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[Incis0r]

Use the adjacent tooth as a reference. Example: If I'm cutting #8, I usually use #9 to identify my first plane and then bring the bur over in that angle to #8. Same thing for 2nd plane.

Here's a good video for an anterior PFM:







The same uploader has tons of videos on other preps too, both direct and indirect.