This happens because of one PhysX disadvantage.
It can’t simulate concave objects as concave, for each objects PhysX creates simplified convex hull and use it instead of actual geometry.
So if two concave objects are too close to each other, their convex versions will interpenetrate each other and that is why they explode. Solution is to use Voronoi fragmentation types since they create perfect convex fragments or use other frag types but with 0 noise.
RayFire Tool
thank you for the very quick reply! changed it and seems to work now after my quick test.
im loving this program! shame it doesnt work on 64bit max =(
Thank you Vadim for this plugin! If there was some settings like Glue for Fragments like in PF Source Box 2 (http://www.orbaz.com/documentation/particleflowtools/box2/reference/13PhysXGlueTest.html at http://www.orbaz.com/products/particleflow/box2/ ) it will be nice!
—EDITED
oops you already added in 1.45 thanks! 
Impressive use of Rayfire shows that there is more to the Tool than fragmentation. I still can’t get the knack of the muzzleflash but I’m still playing with it.
Awesome video Physco thanks for sharing new ideas.
Fire
yeah.that is sweet mate…love your reel too…starting using this plug myself…diggin it.
post soon.
Hello everybody!
I’m making this cup, but I want to break the glass when touching the surface, but I’m not even clear how to do this. Thanks if anyone can help me!!!
This is the video: http://www.youtube.com/watch?v=a-HhtfPGRSA
With such a glassy thing - I’d use demolition
There are tuts on Mir’s site and mine.
Good day, how do I contact the developer? The email on the site is not working and we need to get in touch regarding purchased rayfire license. Thanks.
Mir lurks on these forums a fair bit. Yiu might be able to PM him or keep tyring his email i guess.
He is now relocating, so he won’t be available for something like a week. You’ll have to wait. But write him an email, he’ll respond as soon as he’s back online.
What badluck! My teamlead is bugging me to contact him because there’s an urgent project we need to finish soon. I pmd him already so I hope I get a reply how to get the license download because there’s no instuction after payment.
Contact Anselm v. Seherr-Thoss, he’s the producer of Rayfire - either PM him here, he’s frequent, or email him at mail@3delicious.de
Thanks again for your quick assistance. I was so in a hurry I download it first and thought file was corrupt and deleted it then the second time I thought why the file is like that so I renamed to zip. 
Could someone please explain how one could export say, a wall exploding/breaking to other apps like Modo and lightwave? If yes, I’d like to know the process.
thanks
well, if u record the process with the “o-button” (the record icon) RayFire records the geometry with a keyframe per frame. u can export the geometry then via the FBX format. Just play around with serveral animation export settings inside of FBX but sucessfully exported max simupations done in RayFire into Maya. So it IS definitely possible 
kind regards,
Anselm
