"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?

If the precise i.d. of the tube is not critical at the point where it
presses into the plate, simply expand the tube a bit. You could make a
simple drive-mandrel that will swell the tube a couple-thou, then press it
in as you desire.

LLoyd