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Ok I understand your issue, but at least something shall be fixed if other software are variable and in my opinion this shall be Autocad. As alternative I'm searching a trick to avoid to be tied with Autocad library version, but I'm not sure. I'll keep you updated.

Hi, I tried your code with Autocad Mechanical 2019 and Excel 2016, inside Excel VBA development area, inserting also a user form with optionbutton, making below modification it seems to run. I tried also to change line color and working fine cell color background on excel. I made some modification to variable declaration. In a first time I had some problem retrieving line Start and End points coords, later I made a modification Variable Declaration and it's running fine. I suggest to check if the object inside "ent" variable it's really a line (perhaps could be a polyline). Sheets(1).Activate Dim acadApp As Object Dim acadDoc As AcadDocument Dim currentSelectionSet As Object Dim ent As Object Dim oLine As AcadLine For your info below image with reference library in Execl Project Finally I don't understand what do you want to do with : If UserForm1.OptionButton2.Value = True Then currentSelectionSet.Select acSelectionSetPrevious, , , intGroupCode, varDataCode 'This line is a problem Else currentSelectionSet.Select acSelectionSetAll, , , intGroupCode, varDataCode 'This line is a problem Bye

What 3D programs will you be running? Also, you left out a very important piece of information. What is your budget for all of this equipment? I can tell you from my own experience, if you're going to be doing a lot of 3D work, and especially if you're going to be doing a lot of rendering, you should forget about the laptop and get a desktop PC with a 6-core I7 processor, 32GB RAM and a mid to high end graphics card. If you skimp on the specs, you will regret it.

Learning a new program is different for everyone. Some people have any easy time while others struggle. A lot of it depends on how much time you spend with the program and how much good training material you have to work with. If you're going to try and learn by watching Youtube videos then you're probably going to have a hard time. I can't really tell you what specific program to use, since this is not my area of expertise and I don't know what programs a company like Osprey uses, but if I was going to design a hiking pack, I would use Modo, since I'm very familiar with it, and I would follow the type of workflow shown in the video below.