Control Hatch Pattern Line Weights
I know this is six or seven years too late...but I was running into an issue which was related but a bit different.
There is also some misinformation in the posts.
Hatch patterns has already been covered; these are very easy to change through the type settings.
The surface-display is controlled by the object style. This is TERRIBLE programing from Autoesk.
If you want a lighter hatch-pattern on your surfaces, you have to change the projection-pen in the global object styles.
In order to get your heavier outline back, you can override the weights by category in view and/or by filter.
Obviously you can also override by element or line-weight, but no one wants to do that much work.
The section-display is controlled by the lineweights of Pen 1, and are dependent upon the scale of the view.
(In my office, Pen 1 is reserved only for hatches and very fine detail lines.)
EDIT 1 Jan 2025
I have been running into this problem again in Revit; pretty sure Autodesk changed how hatch-weight behave. 😞
Revit 2023
I believe Autodesk has changed how Line-Weights are assigned to hatch patterns in this version. Previously, pen 1 was used for all hatch patterns.
At some point, the hatch-patterns are now assigne via the Projection-Pen in the Object styles.
This is fine if you are using a very siimple 1, 2, 3 pen-designation for fine, medium and thick lines. I am not.
I use 1 for hatches and very fine detail lines, 2 for a reduced projection-line, 3 as a primary projection line, 4 as a reduced cut-line and 5 as a normal cut-line.
My standard settings until this point was basically to assign 5 the cut-lines of all structural elements and 3 to the projection. Doing that gets me a very thick hatch line.
The only way to solve this is to set the projection lines to 1 in the object styles and to override the project-lines in my view templates.
A pain, but it works.
Revit 2024
Information will be added once I check it.
Here is a Revit Idea on this topic (vote this up if you would like to see this feature implemented): Lineweight for hatch/fill patterns
Lance Coffey
Technical Support Specialist
I have read the whole thread and still didn't see a post that's clear and to the point. So I'm hoping to not just add another of those posts to the list, but here's my best shot:
There's two 'sorts' of patterns discussed here:
1. filled region pattterns
2. Patterns used in materials
Filled patterns are not what OP is after, but these do just have a parameter where you can set the line weight.
For Patterns used in materials:
In most cases Revit uses line weight [1] for patterns used in Materials. There's one exception, and that's Ceilings. For ceilings the patterns are driven by line weight [2]
That's why in Templates we usually keep [1] and [2] just for the patterns, and start at [3] with the thinnest linestyle we want to use for anything but Patterns.
Revit 2025. This wall selected (blue) is not being cut, so I did a manual override of the hatch and now I have these THICK hatch lines...it makes no sense...
Obviously no linework setting for fill patterns, just fill regions. What is controlling this hatch lineweight?????????????
Help!
How is this software still coded so terribly in 2025 when a free AI can literally code me a BIM software from scratch in a day.
Help.
Revit is like game developers selling their early access games for full price. We are not your guineapigs @ (*edit) $3000 USD per license per year.
I digress.
So I found the culprit.
This "umbrella" line-weight seems to control hatch region line weights on all walls that do not fall within any of the other defined categories below. I don't know 100% how this line weight works but it fixed the problem for me.
Good luck others.