Mini Mill/lathe problem (metal rod stuck in metal cylinder)

[Jeffrey Olijar]

I broke my mini lathe/ mill last night and have a very small metal rod stuck in a metal cylinder.  If I can get the metal rod out I can repair it otherwise I have to order both pieces below is a drawing of what it looks like.  any ideas people?

[Marvin Denny]

 How large of diameter is the broken rod?  Is it pressed in or threaded?  Before it broke, was it a removable type of rod?  If tightly pressed in, Center punch the end as nearly in the center as possible and then drill a small hole in the pin center completely through the pin. then go to a slightly larger drill and enlarge the hole--- keep doing that until you finally go through the side of the pin, and then it will start to spin in the hole and you can extract it. You have to be very careful to go in small steps in enlarging the hole and not go larger than the original pin hole.  If threaded,  Drill a hole near the center of the pin as large as you can without going through the edges into the threads, and try an E-Z-Out
  You might try freeze cycling the assembly a few times to try to get it to loosen.

  Bigiron

[Jeffrey Olijar]

press fit 3/32" maybe? don't have any drill bits this small.  what do I have to do to freeze cycle it?

[Rob Killick]

You could try and drill another hole to accomodate the pin size and leave the problem hole with the broken pin in it .
Might be worth a try ?
I guess if it doesn't work , you still may have to order the new pieces , regardless .

[Jeffrey Olijar]

sadly no.  the pin has to be in exactly the same place as it is used to feed the threads.

[Marvin Denny]

  Freeze cycling is you put the item in the freezer overnight, then when you take it out, heat it in the oven for an hour or two at 300 degrees then putit back in the freezed over night, then back in the oven--- do this cycling for three or four times. then try to bump the pin out.   1/16 th dia bit, followed by a 5/64ths  should get the pin almost through the wall so it can be removed.  After that, a numbered drill would be necessary  Going larger in size from the 5/64ths are  #47,46,45,44, 43, and 42  then next is 3/32nds.  Heat cycling after drilling, then using a small ez out might work.  Be very careful using ez outs that small-- they break very easily and are nearly impossible to get out if they do break.
  All the drill sizes I listed should be available at any good hardware store, Sears, or automotive supply house.
  If not,  I probably have most of them in the junk barrel.

  Bigiron

  PS  where are you located?

[Jeffrey Olijar]

brunswick maine.

[Keith Spriggs]

How about drilling out the original pin and pressing or threading in a piece is rod then re-drilling the original hole.

I would first try to drill out the pin as previously outlined and if that failed you could repair it as stated above.