erkodent machine is 4K from Glidewell the last time i checked (been a while). Allows you to do their comfort h/s type of appliance, where it's hard outside and soft inside (comes in pink, blue, clear). The erkodent disks are around $15 the last time i checked. I do some, but i don't call them comfort h/s because if you do you can't charge more than glidewell, they are strict on this, or they used to be. They are a little labor intensive cutting it off the model. We really steer our folks to the Clearsplint/Astron milled pucks for our bruxism patients and if they aren't bruxism patients but need a nightguard then keysplint and print it. Obvious price difference between the two.