Thursday, February 5, 2026

TRACING THE BIM PENCIL

 Something I’ve been working on for two or three days now. Strictly speaking it’s just off the edge of my Hampshire Churches map, but it’s in Hampshire as currently defined. From the church Diocese standpoint it’s in Guildford, Surrey but there is a a possible collaboration here, so I decided to go for it.

Unlike most of my recent church models, this is a full-blown Revit project. That makes it a bit heavier and harder to set up comparison sets with data schedules, but it’s good to question assumptions from time to time. Moving to a different methodology then back again sparks fresh insights. A bit like switching between piano and guitar when working on a song.

 


Windows for St Michael’s Aldershot. I’m using very short sweeps for the tracery so the pattern is drawn as a profile sketch. This guards against the whole thing breaking if I have to adjust height and width parameters later, when I get more information.  Think of them as "stabilised extrusions"

 


So I'm using two pieces of flat geometry with a simple step in level. It’s a gross simplification, viewed close up, but I’m good with it. The best interpretation of a Gothic style window I have managed so far,and unless you are studying a single window in isolation, perfectly adequate for the job.  What I like about this approach is that it makes a clear distinction between the "framework" and the "elaboration"  Definitely a method you could use to design your own Gothic tracery.

 


I should have posted more about the upgrade of my BIM pencil files on ACC from 2024 to 2026. Not really the upgrade itself which is thankfully child’s play these days (links intact etc)

But working through the folders and refreshing my memory on stages of completion (nothing is complete in this world of personal exploration spanning 20+ years) Fixing some of the more obvious issues. Hunting down some missing files in mysterious corners of my hard drive.

 

 


 

That was all quite revealing. The collaborative effort called Project Soane is more complete than most, but the site context files and the timeline work from architect Sampson to Taylor to Soane... These elements were left hanging, so I’m starting to tidy that up a bit.

Images here show the bank just before Soane entered the scene. 

 


 

 

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