KME Tombstones

[MIL-TFP-41]

Not really a Mastercam question, more reaching out to others who may have used them. We are considering putting a couple on our Matsuura H-plus 405 in the "2-2" configuration. (2 sets of rotaries on the front & back face)

I am not too worried about the programming of them (In-house has a post solution for them)
I realize they could get complex to program if one were to do 4 different parts on each rotary - fortunately what we are looking at would be 4 identical parts on each.

I am more wondering about the good/bad/ugly experiences other may have had or seen with them. Durability, reliability, stuff like that. 

Thoughts?

https://kmecnc.com/5-axis-tombstone/

[mkd]

Looked at those years ago. Heck of a good idea. I felt they were expensive for what they are. For the money it seemed they should have figured out some sort of feedback loop to the control for operational security.
 Not sure if it is a marketing failure or nobody's interested in a 50% solution for 75% of the price.
Feel free to disagree or correct me.