good to see that you are not giving up. if one learns 3d modelling professionally, there are weeks long courses covering just the basics.
here is what you are designing with a different workflow, the one from part workbench.
it never hurts to see things from a different perspective.
- 1abcd.png (169.93 KiB) Viewed 242 times
- In a new document, (1) select the part workbench. (2) click the cube icon.
- (1) in the treeview select the cube. (2) in the property view, enter the length, width, height. (3) adjust the view with isometric view and fit all.
- (1) create a cylinder.
- (1) select the cylinder in the treeview. (2) for the diameter, bring up the formula editor by clicking first in the radius property to bring up the small circular icon at the right side of that field, click that icon to get the formula editor, enter the diameter value divided by 2. click ok. (3) change the height to 22.
- 2abcd.png (169.42 KiB) Viewed 242 times
- (1) expand the placement/position property, modify the z-value to -1. By making the height to 22 and moving it down by one, the cylinder is now protruding at both sides of the cube by 1. This is good practice to avoid flush faces for later boolean operations which can, but does not have to, cause mathematical errors later on.
- (1) select both parts in the treeview with ctrl click. (2) press the boolean cut icon.
- (1) expand the cut shape in the treeview
- (1) select the cylinder in the treeview (2) expand the placement / position property view
- 3a.png (103.19 KiB) Viewed 242 times
- (1) adjust the x / y position
- a block with a through hole
- 4ab.png (87.13 KiB) Viewed 242 times
- (1) select the cut in the treeview – right-click and delete, or go to the edit menu and delete or just press delete key
- the underlying cube and cylinder are now separate and again part of you root tree
ps: personal reflection, it took 30 seconds to make the block with a hole, creating the whole post took considerably longer - could that be why some of the people that know are less interested in documentation, why would one spend a lot of time on something one already knows... right, one can get payed for doing it, all things considered freecad is an astonishing accomplishment considering that noone gets payed to do anything (maybe not entirely true, but close enough on that payment thing).
