Thanks, the name of the button is a bit misleading.

Hi and welcome to the forum! You must not use single features from within a PartDesign body in a Part boolean operation. You should use the whole body instead. I guess it's not related to your issues, but I don't know how you created the Hole. Usually you create a sketch with circles and the centers...

bernd wrote: ↑Thu Jul 18, 2019 7:12 pm ping

Do you prefer one or two tickets?

Please edit your posts and put the output in code tags </>. It keeps the indentation and increases readability.

You can try to reset the configuration with the button in the preferences. Another possibility is to delete your config files or to move them in case you want to restore them.

That is known behaviour and it is ok. If you inspect the GCode you will see, that the first move is going to the end of that line (X61.983750 Y49.993750 Z26.000000). FreeCAD doesn't know where the mill head currently is and shows the first rapid move starting from (0,0,0). It doesn't go there, it on...

For that I have changed the system font...

Jee-Bee wrote: ↑Fri Jul 19, 2019 5:03 am when selecting a plane the the force direction is normal to/ perpendicular to the plane

+1

kisolre wrote: ↑Thu Jul 18, 2019 12:40 pm You need a new fan

I could use the fan modeled here .

Have you forgotten "Enable STEP Compound merge"?

It is enabled. I can extract things from the compound using a compound filter

STEP imports as wto solids here without problems.

Can you explode the compound?

1. Don’t you think, This design is better, Especially "transparency". It would be great if you explain more on your own. I get more and more the impression that the only purpose of your posts is to fool us with incomprehesible discussions. These questions are my last try to help you getti...