# Simulating attached parented objects as a single physics object

**URL:** <https://forums.unrealengine.com/t/simulating-attached-parented-objects-as-a-single-physics-object/386244>\
**Category:** World Creation\
**Tags:** parenting, unreal-engine, Physics, UE4, Blueprint, question\
**Created:** [February 26, 2017, 8:52am UTC](https://forums.unrealengine.com/t/simulating-attached-parented-objects-as-a-single-physics-object/386244 "2017-02-26T08:52:04Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![anonymous\_user\_cd1fa529](https://d3kjluh73b9h9o.cloudfront.net/original/4X/2/8/5/28502927f1d97ba1051b3b47ccfe17233bf41ef0.png) [@anonymous\_user\_cd1fa529](https://forums.unrealengine.com/u/anonymous_user_cd1fa529)\
**Post date:** [February 26, 2017, 8:52am UTC](https://forums.unrealengine.com/t/simulating-attached-parented-objects-as-a-single-physics-object/386244/1 "2017-02-26T08:52:04Z")

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Hi Guys

Okay I have problems with a crafting system.After struggling for some time another developer helped me to setup a crafting system using physics.The system involves picking up and dropping physics object on each other to attach them creating a single object.This is done via parenting the items together.

When I use objects that aren’t physics simulated everything works fine.I start my project,eject and then move the items to collide and they snap together

When I simulate physics on them they do not attach when collided.I can see they do parent to each other but they do not stick together,Ie they don’t move as a single physics object but rather as their own.

Is there a way to get these objects to simulate physics after attaching and moving as a single,attached object.I am very new to Unreal so I don’t have a lot of experience with Blueprints.Any help on the matter would be greatly appreciated.