As you can see below, whenever I start to draw a new cutter the cutter starts with some sort of negative offset making it very annoying to draw precise cutters. When I lock the shape and create the cut in the extrude phase the cut actually has the correct size (it then appears smaller - see screenshot below GIF). So the functionality seems untouched by this issue just the cutter shape itself visually has the wrong size.

I have re-installed both blender and boxcutter. This suddenly happens (triggered by some action I don't know, I guess) during the modelling process. When I create a new file the issue is gone. Closing and re-loading my project file won't fix it either.

There is no setting in boxcutter that could cause this either.

cutter size issue happens during drawing phase

cutter after locking shape

  • 2
    $\begingroup$ Boxcutter is a commercial third-party addon so we can't really help with that, but have you applied the scale (Ctrl-A > Scale in Object mode) to your original object? $\endgroup$
    – John Eason
    Commented Nov 10, 2023 at 19:35
  • $\begingroup$ @JohnEason I know, but I have searched the internet for days now and have not found anyone with the same issue. Yes I have applied the scale. $\endgroup$
    – Dawesign
    Commented Nov 10, 2023 at 21:52
  • 1
    $\begingroup$ Have you checked with the addon developers? $\endgroup$
    – John Eason
    Commented Nov 11, 2023 at 0:43
  • $\begingroup$ I'm experiencing the same issue. I believe it occurs when using smaller objects, as in my case, where I used 2 inches by 2 inches for precise electrical item modeling. $\endgroup$ Commented Jan 25 at 16:03

1 Answer 1


I don't know if this can be called a solution, or maybe a workaround, but I was also bothered by this problem and I started testing various ways to eliminate it. I found out that pressing Ctrl at the start of cutting (first click) results in maintaining the dimension we planned to obtain (after cutting is completed). In both cases below, I started cutting in the same place, but on the right side I started cutting while holding Ctrl.

enter image description here


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