Commercially pure titanium grade 2 cutting

[Leon82]

any tips for cutting this? i do 6al4v all the time but i was told it will be different.

 

its a large part lots of deep pockets

[crazy^millman]

Been a long time since I cut it I think it is more gummy than 6 series. I remember can be hardened 10 Series and was gummy before it was heat treated, but I would treat just like anything I am not sure of. Rough/Rough checked for movement, Semi Finish/Semi Finish and Check check for movement, finish big check for movement then finish/finish. Don't use Aluminum for fixturing and support it and dampen it where needed.

Just no bid a project someone thought was a 30 minute Ti part. They quoted the job and got it, but now are losing on it and then decided to seek help trying to make it. I don't care if someone is supplying Material if it is a 3 hour part no matter what you throw at it it is a 3 hour part no amount of think and hoping is ever going to beat the laws of Physics. Funny to 3D print the part would be $40k and they cannot hold the tolerances they want the part made too, but think it is a $45 part to machine it.

[huskermcdoogle]

Grade 2 is very gummy.  I have only ever seen it in a turning application and it was more difficult to break chips than 6al4v.  IIRC, nearly dead sharp inserts for aluminum with high positive chip breakers worked best.  For milling I would say tools that are sharp and sharper will probably be best.  Like all S type materials, I'd say make sure to give it some chip load and you will be fine.  Other than that I have no more value to offer.