same distance gap around part

[Zac-C]

What formula or dimensions do i require so as there is a 0.5mm gap around the Revolution 3 (red color)...is revolution the method required to achieve this?

Thanks

[AutodeskCrash]

You can create two offset planes 0.5 mm from the inside faces of the recessed area, then revolve your red part Between those two planes.

[chad38]

I did it using the method the above poster stated. You had a .75mm gap at the top, I modified your sketch to bring it to .5mm. If this wasn't intended, change it back.