The SR220 Stump Tooth Separator has been designed and built to be used specifically for the separation of threadable stumps. Themachine is equipped with a holding-models support with electromagnetic fastening on the machine table. The models are cut by adiamond disc blade which obtains a perfect and continuous cut on plaster models but it can also cut resins and plexiglass. Somespecific technical choices have been adopted in order to achieve the user perfect safety, such as disc shielding carter, mandatory useof both hands and fast rotation stop.