Some cored ingotsCoke cans, here, come into two different flavors: either alu. canned, and I had already found a use for them, or steel, which I used to
send for recycling. I?m still sending them to the recycle, but not before having given them a fair amount of heat: they?re not bad at
all to make ingots.
After making some, I decided I could do with some hollow ingots: as simple as punching a hole into the base of a coke can, another hole
into the base of a petroil can, a screw & nut to keep them in place and pouring between the two of them.
Being the cheapskate I am, I poured a second ingot into the coke can itself, too. Why waste the inside of that can?
There are reasons, that was not a good idea.
250bar under the press were not enough to separate them. They?re not perfect cylinders, obviously.
I had to give the thinghy a few turns in the lathe to bring the ?core ingot? to reason. Some oil helped, too.
Here they are, before tearing apart the coke can from the tubing.
Now, I have some material I can use to make flywheel rims, but that?s nowhere close to perfection: there are obvious voids in it, due
to the portion stuck in the sand cooling last. The exact contrary of what I should aim for.
Another, much shorter, cored ingot.
This one came out without too many protests, the needle never reached the 150bar figure on the dial.
I had poured definitely cold, on this occasion.
Marcello