How do you verify output of post processor mistakes?

[BrighidBlade]

I just got access to a different machine than I am used to and the post processor part is making me weirdly nervous. I did a simple 2D pocket in Fusion 360, posted it, and then stared at the code like it was going to jump off the screen. On my last machine I had a post that was basically set and forget, but this one is new to me and I do not want my first mistake to be a crash.

What are the first dumb post mistakes people make and what is your checklist to verify output safely. Like do you always check tool change format, work offset, units, safe Z, and spindle commands before you even think about hitting cycle start. I would love a boring routine that keeps you out of trouble when the post is not fully trusted yet.

 

[Captain_Goofy]

I like doing a tiny “test cut” program first like a square, a circle, and a tool change, all above the part. It shows me if the post is calling the right tool, spinning the right direction, and moving where I expect. Once that looks right, I trust it more for real parts.

 

[Thompson]

First thing I check is units, safe Z, and work offset consistency, after that I do a dry run with no stock just to confirm nothing sketchy sneaks through.