Building problem when making a window

Hi everyone when I try to add my window into the wall I don’t know how to fill the empty spaces, tried with gap fill, and still don’t work.

do you guys suggest any tip?? I’m new in all building related stuff

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My suggestion would be to create a UnionPart:

  1. Duplicate the window model you’ve made (right-click it and select “Duplicate,” or press CTRL+D);
  2. Select all the parts in the duplicated window, right-click on it and select the “Union” option;
  3. Right-click the window again and select the “Negate” option. The window should turn a transparent red;
  4. Now, create a brick that is the exact height, width and depth of the gap in the wall, as well as the right color and material. Put the brick in said gap;
  5. Make sure the negated window is in the exact spot where the normal window is. (For this part, it may help to move the original window out of the way.) Select both the negated window and the new wall. Right-click on them and select “Union,” again. You should get a perfect, window-shaped hole in the wall!

Here’s an important note: if the window is thinner than the wall, you may need to increase the thickness of the duplicate window for the hole to go all the way through.

Here’s a Roblox tutorial that might help as well.

Good luck!

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Try duplicating the window and using it to negate a wall so there is a window shaped hole.