From a similar post in another thread (note that this answer is VERY similar to what MavRick says right above here. Why? Because it works, that’s why.
It WILL come out... you just have to convince it.
1. Get a bath towel, fold it into at least six layers, and set it on the floor (preferably a bare, hard floor surface, but carpet will work okay).
2. Remove your pommel.
3. Using both hands, hold your saber by the blade, near the pointy end.
4. Stand right next to that folded towel, facing it.
5. Raise your hands while holding the saber, as high as you can.
6. Bring the saber straight down on the folded towel, with reasonable force.
7. Nothing will have happened, so repeat steps 5 and 6 with increasing force until you see results.