Since there seems to be no way to remove armor trims off of armor, or "deconstruct" armor with trims, I added one myself.
Features:
Trim Removal:
Armor Trims can be removed from any piece of armor using the new Armor Scraper.
This item is crafted using the following recipe:

After crafting the Armor Scraper, armor trims can then be removed from a piece of armor by putting the armor in your offhand and right clicking with the armor scraper in your main hand.
Some examples of how to use the scraper are in the gallery. The keybind to scrape is configurable.
For now, that's it for this mod. Though simple, I feel like it was an oversight to not add implementation to remove armor in 1.20.
feel free to include this mod in any sort of modpack or project, I don't really care.
How to Install Trims Begone! (Mod)
Trims Begone! by baidan546 is verified for Fabric, Forge, Neoforge across Minecraft versions 1.20, 1.20.1, 1.20.4, 1.20.6, 1.21.1, 1.21.11 (latest release: 1.22, file size: 28 KB). Follow the steps below to install it safely from ModCraft.tv:
- Click the Download button above and select your Minecraft version (1.20, 1.20.1, 1.20.4, 1.20.6, 1.21.1, 1.21.11) and platform (Fabric, Forge, Neoforge).
- Make sure you have the compatible loader or environment installed for Fabric, Forge, Neoforge.
- Move the downloaded Trims Begone! file into your Minecraft
.minecraft/modsfolder and launch the game.
All Versions
+ Add Version- Neoforge Release of 1.22.
- Fixed all recipe bugs and bugs with modded armor trims, i.e. ported the updated fabric version of the mod for Forge 1.20.1, as this seems to be the most used version. For other Forge versions, I'll port them on a request only basis.
Fixed incorrect author names in gradle documentations.
- Rewrote entire Mod Structure for Fabric instead of Forge, to fix a number of issues involving crashes and cross mod compatibility.
- As a result, modded trims/materials should now properly scrape off of armor and all crafting recipes should be consistently visible.
- A Forge version may be released in the future, but likely not anytime soon.
- when using this instead of the normal armor scraper, it will return a netherite template and netherite ingot if the armor was netherite
- also returns trim and trim material, like the default scraper
Keybinds:
- the armor scrape function has now been resolved to a configurable keybind
Bug fixes:
- fixed a duplication bug that duplicated the trimmed armor
- fixed a bug where the game would crash if the scraper was used without armor in the offhand
- additionally, there are no bugs for the new 1.21 armor trims
For OLDER VERSION 1.20.1
- when using this instead of the normal armor scraper, it will return a netherite template and netherite ingot if the armor was netherite
- also returns trim and trim material, like the default scraper
Keybinds:
- the armor scrape function has now been resolved to a configurable keybind
Bug fixes:
- fixed a duplication bug that duplicated the trimmed armor
- fixed a bug where the game would crash if the scraper was used without armor in the offhand
- additionally, there are no bugs for the new 1.21 armor trims
- when using this instead of the normal armor scraper, it will return a netherite template and netherite ingot if the armor was netherite
- also returns trim and trim material, like the default scraper
Keybinds:
- the armor scrape function has now been resolved to a configurable keybind
Bug fixes:
- fixed a duplication bug that duplicated the trimmed armor
- fixed a bug where the game would crash if the scraper was used without armor in the offhand
- additionally, there are no bugs for the new 1.21 armor trims
- when using this instead of the normal armor scraper, it will return a netherite template and netherite ingot if the armor was netherite
- also returns trim and trim material, like the default scraper
Keybinds:
- the armor scrape function has now been resolved to a configurable keybind
Bug fixes:
- fixed a duplication bug that duplicated the trimmed armor
- fixed a bug where the game would crash if the scraper was used without armor in the offhand
- additionally, there are no bugs for the new 1.21 armor trims
The following features can now be turned on/off in the config:
- If armor is returned when using the armor scraper
- If armor trims are returned when using the armor scraper
- If armor trim materials are returned when using the armor scraper
Specifically, these config options are server side and are in the common config file.
The following features can now be turned on/off in the config:
- If armor is returned when using the armor scraper
- If armor trims are returned when using the armor scraper
- If armor trim materials are returned when using the armor scraper
Specifically, these config options are server side and are in the common config file.
- fixed a bug where items would lose their enchants when the armor scraper was applied to them.
- fixed a bug where items would lose their enchants when the armor scraper was applied to them.
- inital release, for 1.20.1
- initial release