Posts: 375
Threads: 53
Joined: Jun 2013
Location: Jonesborough, TN
Im trying to clean up/square up a piece of cast iron cut from a John Deere tractor weight. My 4x6 band saw cuts it easily, but nothing in the mill will get through the skin. Ive tried fly cutters and end mills.
The skin is rubbing the cutting edge off the fly cutter. ½ mill cutter stalls the mill (belt drive).
Mill is an x2 with DRO/tach. What am I doing wrong?
Chuck
Micromark 7x14 Lathe, X2 Mill , old Green 4x6 bandsaw
The difficult takes me a while, the impossible takes a little longer.
Posts: 8,849
Threads: 318
Joined: Feb 2012
Location: Arizona/Minnesota
You might need to take an angle grinder to it to get through the skin. But I don't know much about cast iron so take it for what it's worth.
Ed
Posts: 1,827
Threads: 51
Joined: Apr 2012
Location: Oklahoma
like Ed said take a grinder to it if its not to large.
switch to a fly cutter with a HSS bit with very little rake so you have a good stout cutting point low RPM and if you can go completely thru the skin in one pass.
Skins the toughest part but some castings have pretty thick skin, being what it is I'm supprised your bandsaw cut it without wearing the teeth off the blade.
dallen, proud to be a member of MetalworkingFun Forum since Apr 2012.
If life seems normal, your not going fast enough!
Posts: 251
Threads: 21
Joined: Jun 2013
Location: Shiloh, Il. USA
If I remember right they use the pig iron in the weights, the pig being the 1st iron pour tends a poor quality iron also does not get the inoculated with ferro-silicate compound.
oldgoaly, proud to be a member of MetalworkingFun Forum since Jun 2013.
Posts: 2,344
Threads: 53
Joined: Feb 2012
Location: Spencer MA USA
08-04-2013, 05:08 PM
(This post was last modified: 08-04-2013, 05:12 PM by PixMan.)
This is one area where carbide insert face mills excel! I have three of them now, having sold the biggest 4" one to Wrustle.
How much spindle power does a Seig X2 actually have and at what speed range? What is the spindle adaptation, R8, NMTB30, or ER collets?
Can you use something like the 1-1/2" one at the right hand side of this photo? It's a 3/4" Weldon shank.
Posts: 2,685
Threads: 29
Joined: Feb 2012
Location: Nova Scotia, Canada
Chuck, just follow Harold's recommendations on that "other" forum.
Busy Bee 12-36 lathe, Busy Bee Mill drill, Busy Bee 4x6 bandsaw, Homemade 9x17 bandsaw, Ad infinitum.
Posts: 2,344
Threads: 53
Joined: Feb 2012
Location: Spencer MA USA
It's a very rare day that you'll ever see High Speed Harold suggest a carbide insert solution.
Posts: 8,849
Threads: 318
Joined: Feb 2012
Location: Arizona/Minnesota
(08-04-2013, 06:33 PM)PixMan Wrote: It's a very rare day that you'll ever see High Speed Harold suggest a carbide insert solution.
Posts: 375
Threads: 53
Joined: Jun 2013
Location: Jonesborough, TN
I'll try the angle grinder. I don't have any carbide tooling for my mill.
My X2 is currently running a 1.5 hp treadmill motor, R8 spindle.
Carbide router bits was suggested on another forum.
Chuck
Micromark 7x14 Lathe, X2 Mill , old Green 4x6 bandsaw
The difficult takes me a while, the impossible takes a little longer.
Posts: 2,344
Threads: 53
Joined: Feb 2012
Location: Spencer MA USA
08-05-2013, 09:51 AM
(This post was last modified: 08-05-2013, 10:09 AM by PixMan.)
Chuck,
If you'd be willing to find and buy an R8 shell mill adapter with a 1" pilot diameter, I've got a 2" 5-indert shoulder/face mill that I could sell you for $50. It's sold by MariTool, though I believe it's a Mitsubishi cutter. It takes APMT160508 inserts, available from MariTool, Mitsubishi and Nachi to name a few. There are 5 inserts in it now, just three spare new ones of a different grade.
While unusual to find a 2" cutter with a 1" bore (most are 3/4"), the cutter should work well for this and a number of other applications. I could drop it in the mail to you today before I leave town, you could pay me however you want when it's convenient for you.
E-Mail me to work things out.
BTW, those cutters in my photo (and many more) were all used on a lowly
1HP Bridgeport without any problems.
Here's a link to a cheap but usable R8 to 1" shell mill adapter:
http://www.shars.com/products/view/746/1...Mill_Arbor