here's an exaggerated platform:
note how it sits below center-line of the edge you'd be working?
![](https://lh3.googleusercontent.com/ylkAjM81o6-JKQpEkTMYb43tdvwvnEYqMR61H8y4qbdUGEpj7nK04RyT38oxF2Q3THmGEhxjrmjSl2jiMd_gNombu8Ej_BU5r1gTFl-KO7Y42w7XMfijuz2fP7pakZXYYASiW8zWJuiaInn9mewuG81yE6UsEQz2ON7IrXG0aErEfcPj-9Q1L9X_XzqwLHKzU-qVy-amn_YHUZdWrUlR1KccKOfPhd4gezTTmCLZNMEKbkCcR5Nw9HUPjW_1rXUoC6v5ulVxOrm1t0nqiyntjg6MlCAOtrs0UKCfgXW8A_fIQFNiYyNO8YO7fBEvlpeASb5FwQowewcWHpmV63Vq6zn4KZ2LZnysKS8-zdCgzH8QdAJ937V38RxVy3xL2_ArBYsTf76amOvWBgrXSwmSIU-VWjPtiJCo6cr803ZCV9YOKVgTPlV6KPiM3UxOgq3U20YGlaU6xsORxdeUhWwAsyA7bBPlOsvtyDfdaiO7Q-JZioVxSNcurnz2e2DeTokt5cGSg6nQ0g7OB8vdT0XyMnlKYQN60eY-FBmaq0jDUD0=w504-h895-no)
this shows the underlying ridge material/mass. the ridge-line essentially indicates the orientation that you'd like to align your tine with.
![](https://lh3.googleusercontent.com/VVPcl9A7NLfGeTsc6Q2_G6d1TSVmG4hVnq6GU_PkGz6lwKiUbIkoYHXVxx3kpI-MfiMQNN4DsZVuSZ9cH6i37s6Fd8SlxvfehM0PqGN4syQVSNaROMbvfcUY4_-2NElHO0fqej11zsL7KPmHKMDlUfw0M4PE4oQbqgBbgpID6pjopaiTJVYL0BtaHc5WC89oZiRWXWkOkLYO7d8CWg80k27Sy39ce2RN-nKhFY5wBxEwdmEZpPcGvgv6hJYVEpsy15ShWH5S3DBERmjVE59inSVioAF-ttCyvyxByNPudy_Zn5gSzo8X2Jij1WRTqFPrNJ6RgG3pVWJasIxi_7yZysWSycd7WPS2VR6B3Z3IiLVf_vAikx6F8UybTSq90u6Z8vEU1DnLnF0HkEQ_ituzQwuCs84uzqHz0L7QGZKFZiXQHmjeydF16M18jajlWiWOmzJvNAdxkn9QxezzMPVL31bSRH5xAswocCzeurkICGz1K00AajjmxXSq7GguidVPfEh1mGMUOjFQwScmf1hh4onYBYnLp2eUKB2HNYXgEEA=w504-h895-no)
here is how i would try to support this piece for the removal. note how i try not to allow the ridge to come into contact with the palm of my hand.
![](https://lh3.googleusercontent.com/zv3W3Ob_drivKVIKxUCszYI--dLvIvskuEl1W9_7nj26FkDqPc88Y1KBTjCROL1ooQQubgiQsTaGeMm9ZWsETEs-SbxZCNfY9b4YQk1v6AH0biFKkyfWiHA9nIrULdi-Ga2Sy3eD2EZpTLqO3zgzYt5WN9O_T82dwWPZGHiCqBjPwN4PQ1s10duKKk2Wf4xj9XryMQiMYs2zoAGAu5SIeJNKewXo9y0sN59GYR16vR9uBZb_b6prgRMOQEgfqQu2HiW78j258uxZz5BRGyVZ0c3zZjJ3rRVgxROTD3TJDOfN9tpj6pntPPaQis-hCiMfdhIc7QDTNoiTuIIG_VQy7lBvBqHz55lkdDb__9C1-quiLFdJZTxWfLUWhBgk2zkDfmCsh1Y3TKwCKVv2vCaHTD4viUdxZKjhQASla4qxoAaF-MxTGiAnxdd2-jxFhA6Cml1k72H7zyqtO6bHODmeJ1T7hK_COYHv6JNkkF3EPDT83SRdWr7e6w_XMhXxP3BTGaUvXonGQwUm-pWH4e6ddZeWPpdQr7ygsOEqFO9IBZc=w504-h895-no)
and here is where the tine would make contact (after abrading):
![](https://lh3.googleusercontent.com/VcKGe8291Zaf4wFJe501AcehzfWvosQ4l5xlbL-aNfAX-N_paYPgaeUZ10XI1pFNubPb8EskMq0EeGSOL8YF6jwLrFad-ZR6TBQKPMlH_1IpW_MfaqVbufpAr0fXvZeFopigNvNwgwAlibikLqlkpRBy0NPliLN0QnCHVsfmCPI2zDw8uum0YG7NUgbNk3Fs9NX5tenECoH6T2AOT5Ae7l6JfB2lxbECa8940jgAIH8HGjWvQoHMivRAuMp6EfHhkRjO78MdFAzCfN5Oq773WoHCAKLfV9leoTE0HXPGlPJDUaA-f3X6T5mh8SRGMmljKpIDPsHxtpLLq7Po7WuvR_s7usnCuynmgdZVCz1aLY11ODKZ1Bl1x_WNOTy_sQ58-SxlpIu4uk5mkJC7M8flCf53-9G7CP9oA60YGcFx2hOOT9SvGJsgjf3a1JinO9irc7MC6BWyqCMGuY96f-MyGshCe3MAQhMM7sIZLCXwRL6tVRt5mFT5JN0XSblF2gQbLsrKqHXEO2tUqFlIW26oAJ5SJ08pAPBDIVBEWJ1yDDc=w1280-h720-no)
continue with inward pressure (into the ridge) until the platform gives.
please excuse my plastic tine. it's the eraser end of my pen for my wacom tablet.