Merge hatch lisp

[faisalWJ8Y9]

hi All,

trying to use the merge hath lisp routine attached to merge hatches... for some odd reason its deleting the hatches rather than merging them lol.. any ideas as to why?

[qchalmersKACEH]

I'm using C3D 2026 and agree, unfortunately this LISP doesn't work anymore. It did used to work on older versions of CAD/C3D. Hopefully someone can fix it as it was very useful.

[Udo_Huebner]

I just checked the above Lisp code in Civil 3D 2026.1 and it works as expected for me:
see short video: https://go.screenpal.com/watch/cTj6QJn2cUh

Perhaps you could upload a sample file with hatches where it does not work as expected. This is not a Civil 3D issue, but rather an Autolisp question and can be better discussed here:
https://forums.autodesk.com/t5/visual-lisp-autolisp-and-general/bd-p/visual-lisp-autolisp-customizat...

[qchalmersKACEH]

You are correct. I was testing it on multiple files which were using solid hatches. With other hatch patterns it does work correctly.