View Issue Details

IDProjectCategoryView StatusLast Update
0003909ArchBugpublic2021-02-06 06:28
Reporterbrjhaverkamp Assigned To 
Status newResolutionopen 
Product Version0.18 
Target Version0.20 
Summary0003909: Arch remove does not work correctly for creating subtractions/holes
DescriptionAs discussed in forum thread
Arch_subtract gives misalligned results when one of the objects has an offset.

In the added example this is the case where I subtracted "Thick roof dormer holes" from Thick roof for cutting walls" The roof is raised by .80m compared to the sketch and it looks like this is not taken correctly into account.

A second problem seems to be that nesting subtractions doesnt work correctly.
In the added example I subtract "Thick roof for cutting walls" from "Interior walls. This works correctly, except for the places where the dormer holes should have kept the Interior walls intact.
Apparently the "Thick roof dormer holes" are not taken into account in this subtraction.

Steps To ReproduceSee attached example
Additional InformationOS: Ubuntu 18.10
Word size of OS: 64-bit
Word size of FreeCAD: 64-bit
Version: 0.18.16093 (Git)
Build type: Release
Branch: releases/FreeCAD-0-18
Hash: 690774c0effe4fd7b8d2b5e2fb2b8c8d145e21ce
Python version: 2.7.15+
Qt version: 5.11.1
Coin version: 4.0.0a
OCC version: 7.3.0
Locale: English/UnitedStates (en_US)
TagsNo tags attached.
FreeCAD Information



2019-03-17 08:54



2021-01-18 23:02

developer   ~0015212

Similar / related Forum Discussion-

  1. Arch Window create Wrong Opening Position Bug?

  2. Copying and moving a window to opposite wall


2021-01-20 10:20

reporter   ~0015215

The reported bug has already been fixed:


2022-03-03 13:55

administrator   ~0016736

This ticket has been migrated to GitHub as issue 5901.

Issue History

Date Modified Username Field Change
2019-03-17 08:54 brjhaverkamp New Issue
2019-03-17 08:54 brjhaverkamp File Added: example misplaced subtract.FCStd
2019-03-18 19:30 Kunda1 Project FreeCAD => Arch
2019-04-04 15:13 Kunda1 Summary Arch remove does not work correctyly for creating subtractions/holes => Arch remove does not work correctly for creating subtractions/holes
2021-01-18 23:02 paullee Note Added: 0015212
2021-01-20 10:20 Roy_043 Note Added: 0015215
2021-02-06 06:28 abdullah Target Version => 0.20