WeldModel by SWAT_Combat11
Luau
Something I made to make welding models easier. How it works: You can select unlimited models, if there is no primary part set it will set one for it automatically. It works with change history service aswell so if you want to remove the newly created welds then just hit ctrl+z. Once you have selected all your models just hit that button in the widget (the text should say "Selected Models: #") and boom! If all goes well the welding should be a-ok! Word of warning this does NOT work with models with nested models. You'll need to weld those by yourself using the plugin. Anyways Enjoy.
Get it → create.roblox.com