Trying to glue 2 objects together but it offset from origin.

[papaonn]

Greetings,

I am facing some problem with gluing two objects together at a fixed orientation.
The problem is that, when i had multiple constraints applied (I'm using hinge) the objects started to decay from its original positions.
I had increased setOverrideNumSolverIterations to 1000 times iterations, but the offset problem still occur,
how do i resolve this issue? Is there any other constraint that could help gluing the objects together without rotating ?

* By gluing i mean the object A & B are attached together with fixed orientation *.

[alex55i]

Try btFixedConstraint