Hey community! This is my first post - and i have done actually no dynamo programming, but i am looking for some way to get rid off my unused materials! Does anybody have a clue? Thnx!

sorry for my question, but how would you start?

here the node i just made. the top is to select ALL material in project. the bottom, is to select material that is use in the project : you must create a material schedule within Revit, because the node extract the data from the view schedule. you will need those packages with Dynamo 1.2 : -Bimo…

Hey Yien thanx for your effort. i didn’t found time to test your node, but i will… meanwhile i found another way to delete Materials with a string input, so i find those “nasty” materials called “Standard” (i don’t know where there are coming from…) [image] But, unfortunately there are some “m…

So here those Material Assets??? in german maybe someone knows how to pick them? [image]

oh i forgot, you need the JBE package (Eraser) i use Dynamo 1.2

This maybe? (found through the search field): [image] Purging Material Assests - mainly the appearance group Revit Hi @tlivingston There is a custom node from archi-lab package called “Material.MaterialAssestElement” will get you started. [image]

Ladislau, I believe Assets are parts of materials. Once unused material is deleted, you must also purge the remaining assets. Y

@Yna_Db thnx a lot! I’ll try next day… will show results later! ymmd!

Unused Materials come up with the standard Purge. What did I miss? Are you trying to make it part of a larger graph?

@Greg_McDowell Thanx, you didn’t miss anything, i just try to get rid of some controlled Materials (etc.) which seem to “grow” in my project file (lately 240.000!) named "Standard" and yes i could use the purge comand, but - in my case, it takes aprox 8-10h just find all unused !!!.. :-o so i t…

Delete unused materials

Revit

Yna_Db March 1, 2017, 1:01pm 10

This maybe? (found through the search field):

Topic		Replies	Views
How to know what material elements in Revit project file are not used with Dynamo so I can delete safely? Developers revit , python , dynamo	14	298	February 28, 2024
Purge/Delete unused elements Revit	35	13164	June 10, 2024
Collect all used materials/families in the model Revit revit , dynamo	2	582	April 19, 2023
How to call the "PurgeUnused" Dynamo node in a Python Script? Revit python , dynamo	4	147	April 4, 2025
Purge in Revit 23 Revit	27	390	January 21, 2025

Delete unused materials

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