Need 4.00" long ball mill where can I find one

[steve4460]

Hi Guys
I need to cut a 3 D file in some 3.00" thick foam and need to use a 0.25 or 0.500 ball mill that is about 4.00" long . Is any of you guys selling something like that , or knows where I can find such a thing ?.

[Brady Watson]

You can get a super extra long 2 or 4-flute 1/2" solid carbide end mill from OBerg Brothers (http://www.obergbrothers.net) It is 6" OAL, with 3" LOC. Onsrud has a 5" long one but it only has like 1.5" LOC and is obscenely priced. Call Andy@OBerg's tell him I sent you.

If 6" is too long you can score and snap the shank off to 5" to give you extra Z room if you need it (PRT).

-B

[dana_swift]

Stephan, I have had the exact same problem. I had the guys at Centurion cut a standard bit design from a 4" carbide blank as a special order. My bits were end mills, but probably they will do a ball nose if you like. They got my bits made and delivered quite quickly as I recall.

As usual I appreciate Brady's comments and suggestions. Thanks!

Good luck.

[steve4460]

Thanks guys . I will check that out in the morning.

[gus]

Try enco I use lots of their solid carbide stuff. Lots of time they have free shipping.

They have .500" ball mills up to 6" OAL and .250" up to 4" OAL

http://www.use-enco.com/CGI/INPDFF?PMPAGE=176&PARTPG=INLMK32

[cabnet636]

i do a good bit of deep work

look at pdf on specs

http://3dcutting.com/products/frogtools

[Brady Watson]

The ones I spec'd out are available 2 or 4 flute ball as well. Not just square end. Both configs solid carbide.

Do NOT buy any import junk made out of HSS at those lengths.

-B

[steve4460]

Thanks Brady that was quick and painless ordering from Andy and it didn't max out the credit card.