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Milling Insert Clarification

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Daniel	25/07/2020 17:37:15
338 forum posts 48 photos	Good afternoon everyone, The time has come to replace my facemill inserts. The facemill was bought (with unreserved happiness and joy), some while ago from RDG. Their replacement inserts are coded TPUN 16 03. However, I like to buy my inserts from JB Cutting Tools. Jenny lists this insert as TPKN 16 03. Can anybody enlighten me as to the difference, please ? ATB, Daniel
DC31k	25/07/2020 18:41:18
1186 forum posts 11 photos	http://www.carbidedepot.com/formulas-insert-d.htm
colin vercoe	25/07/2020 19:18:22
72 forum posts	TPUN is a turning insert geometry but can be used for milling but not as robust, go for TPUN 160308 the 08 being the radius on the tip cutting edge. TPKN is a milling insert same triangular shape and thickness but the KN denotes ground facets on the cutting edge instead of the 08 radius more robust and a better finish, also more expensive
Chris Evans 6	25/07/2020 20:39:00
2156 forum posts	I use TPUN16-03-08 inserts for milling, a quick touch on a diamond wheel and they cut well.
Daniel	26/07/2020 06:55:05
338 forum posts 48 photos	Thank's for the replies, people. If I understand well, I can safely order the TPKN version, then? ATB, Daniel
Chris Evans 6	26/07/2020 07:35:31
2156 forum posts	TPKN version is very good. I am just to tight fisted to pay the price !
Daniel	26/07/2020 09:10:14
338 forum posts 48 photos	Posted by Chris Evans 6 on 26/07/2020 07:35:31: TPKN version is very good. I am just to tight fisted to pay the price ! Ha ha, I'm hoping that the extra investment of 61 1/2 Pee per insert will repay me in longevity of service, thus rendering myself, joyfully even more tight fisted. ATB, Daniel

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