"Jerry Martes" wrote in message
news:hSz4f.3373$t12.3150@trnddc03...

"JWho" wrote in message
news:hQy4f.439523$x96.344304@attbi_s72...
Hi. I have an aluminum piece with a hole. There was a tube pressed
into
that hole, but I pressed it out and want to install a different tube.
The
inner diameter of the hole is slightly larger than the new tube that I
want
to press fit into the hole. The new tube can be inserted into the hole
without a press fit, but it does not rattle around. This is not a tight
enough fit. It has to be a press fit. I am hoping there is a tool to
reduce the inner diameter of the aluminum hole so that the new tube is a
tighter fit. From searching around, it seems that I may need a knurling
tool. I have a 20 ton shop press, and I am hoping to find something
that
I
can press through the hole to make it a smaller hole, causing a press
fit
for the new tube and aluminum piece.

Does anyone have any suggestions on what to do?

Sorry to not list a real e-mail address, but it is to avoid spammers.
It
is
goteverwhatyouneed at yahoo dot com.

Thank you very much.


Jwho

If you intend to slip the mating tube into the "too large' hole only
once,
and you dont want to invest in a knurler. you might try this crude method.

Punch the surface of the tube thats slightly too small with a center
punch. Put as many punch marks as you feel necessary. But you must
punch
enough marks to make the tube a press fit.
Get some Loctite intended for locking bearings into their sockets and
apply to the punched surface.
Slip the tubes together and wait for the Loctite to set.

Jerry



Hi. Thank you for the information. To help clarify everything, I am going
to take some pictures of all the parts and give some dimensions.

I plan to assemble it only one time and never remove it again. The new tube
is real hard steel, so I don't know if I can centerpunch it like that.
Someone else might be able to, but probably not me. :-)

Thanks again.