About David Collins

David Collins · 2025-06-06

I’m migrating current 27 projects into ArchiCAD 28. The library manager is reporting two versions of “tolerance.gsm” although one of them is named “tolerance 27.gsm”Both of these appear to be embedded in lcf files. Which one should I eliminate and ho...

David Collins · 2023-12-24

As an ArchiCAD user since 4.55, I’ve been archiving projects in *.pla form for almost thirty years. These have always opened up perfectly in every new version up to AC 26. I just tried to open a *.pla file from version 9.0 and AC 27 tells me I have t...

David Collins · 2023-12-04

In ArchiCAD 27, a marquee in the 2d window no longer automatically cuts the model in 3d. Is there a setting somewhere I’m missing?

David Collins · 2023-11-22

I’m seeing a big difference in the 3d window from AC26 to AC27. In particular, there doesn’t seem to be any antialiasing in AC 27. “3d anti-aliasing (with Hardware accelerated mode)” is checked in both cases. All other settings are also identical. Is...

David Collins · 2023-11-13

I'm not seeing a GDL Reference Guide for AC_27 in the Documents Folder of the INT version. Can we expect to see this soon?

David Collins · 2025-06-07

Thanks Laszlo for pointing me at this thread. I have to say, I’m no fan of the Global library, for all the reasons mentioned there. I have many projects that have migrated through multiple ArchiCAD versions and will continue to do so going forward. I...

David Collins · 2024-01-15

Totally agreeing with DG Sketcher (23/11/20) who said in the MEP 27 thread: "Part of our investment is entrusting GS to curate our data files to enable us to reopen past projects and recover the data for further development. I have had a client who s...

David Collins · 2023-12-05

That was it. My shortcuts got scrambled in somehow in 27. I’ve been using “Show Selection in 3d” as the default 3d key for so long I’d forgotten it was an option. Thanks.

David Collins · 2023-11-22

A restart fixed this. I'm not sure what was going on.

David Collins · 2023-11-13

Thanks for the link. The "new" manual is identical to the AC26 version, except for an updated copyright year. So, no detailed help there with the new command menu, script folding or auto-script features in the GDL editor.I'm sure it all self-explanat...

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Duplicate “tolerance.gsm” library part in AC 28

ArchiCAD 27 cannot open older “legacy” *.pla files

ArchiCAD 27: 2d Marquee not cutting the model in 3d

3d Antialiasing in Archicad 27

GDL Reference Guide for AC 27

Re: Duplicate “tolerance.gsm” library part in AC 28

Re: ArchiCAD 27 cannot open older “legacy” *.pla files

Re: ArchiCAD 27: 2d Marquee not cutting the model in 3d

Re: 3d Antialiasing in Archicad 27

Re: GDL Reference Guide for AC 27