fit n finnish.. stainless

[nightowl499]

ok i do a lot of stainless on my lathe, have a new bigger one now , want to know your techniques for getting a
nice finish for polishing . what type of cutting tool speeds and such work for you
Gary

 

[12bolts]

Polished finish? Emery backed up by a file.
Smooth turned finish, round nose radius on the tool, suitable SFM. Really need a bit more info to offer much more

Cheers Phil

 

[Karl_T]

OK, IF your lathe is rigid and powerful enough, move up to negative rake inserts. I suggest CNMG in 1/2" IC because they are so common.

For 304, Seco TM4000 at 550 sfm feed 0.007 IPR or more would be a good start point
http://tradetools.co.nz/category/IDOCNMG

Note: I normally buy inserts off eBay. This insert is $22 new. I've bought them by the lb. for pennies each.

 

[nightowl499]

OK, IF your lathe is rigid and powerful enough, move up to negative rake inserts. I suggest CNMG in 1/2" IC because they are so common.

For 304, Seco TM4000 at 550 sfm feed 0.007 IPR or more would be a good start point
http://tradetools.co.nz/category/IDOCNMG

Note: I normally buy inserts off eBay. This insert is $22 new. I've bought them by the lb. for pennies each.

How do you manage to buy them so cheap ?

 

[Karl_T]

How do you manage to buy them so cheap ?

Perseverance and patients is the key. Auctions, mislabeled, large lots etc.

 

[Cadillac STS]

Would someone post pictures of stainless cut on a non-cnc lathe that is ready for bright polish and same item with the bright polish after buffing. And share how to do it.

 

[Tony Wells]

Do you mean bright polish in decorative, or optical bright? Do you have a specification or measurement of what finish you need? Do you have a profilometer?

 

[nightowl499]

give me a day or so

 

[Cadillac STS]

Do you mean bright polish in decorative, or optical bright? Do you have a specification or measurement of what finish you need? Do you have a profilometer?

Nothing specific or scientific. Just want to have some pointers on how to make a nice finish on stainless on a manual lathe. I didn't start the thread but I hope it gets interesting.

I've seen things for sale as stainless but look like a bright mirror surface. I assume that has to be some type of plating to have such a bright shine.



Stainless will always have a silver matte finish, true?

 

[nightowl499]

Nothing specific or scientific. Just want to have some pointers on how to make a nice finish on stainless on a manual lathe. I didn't start the thread but I hope it gets interesting.

I've seen things for sale as stainless but look like a bright mirror surface. I assume that has to be some type of plating to have such a bright shine.



Stainless will always have a silver matte finish, true?

matt or shiny finish must be put on the stainless its sometimes matt when you get it sometimes not , ifall the tooling marks are polished out it will look better than chrome
you can get it to look llike a christmas tree ormnament