It seems my heat treaters seem to have let me down. I have found
atleast a few soft irons. I know they started around 10/1/05.
This last batch of irons I found they had warped almost ½ my batch of
irons. Someone really messed up since I bet I have not had 10 warped
irons in 3000 irons or so. Then I got a couple of complaints about
soft irons. So I bought some hardness testing files and I found a few
I have not had a chance to check my whole supply to see how bad I
stand. But since 20 or so irons are too warped to use I am low on
If you think your iron is soft try running a file on the top and see
if it digs in. seems if they are soft they are around rc45 or 50. I
will replace the irons as soon as possible. I just ordered more steel
and hope to have another heat treater within three weeks.
Carbon steels are quenched and tempered to produce a product with a certain
amount of hardness without being too brittle. It's possible that the
material was brought up to temperature and quenched properly. It's more
likely that the tempering process was at too high a temperature. I suppose
it's even possible that the steel wasn't the correct alloy to begin with.
If I was Steve, I'd consider either picking up a used Rockwell tester to
check my stuff or get my heat treater to submit sample test results.
I don't know what they have been doing. since they do test a bunch of
blades and give me a report.
they used to not have a problem. makes me wonder of they temper in a
bunc hof batches or what. I got some hardness testing files. they
were cost effective and I can check a lot of irons fast. so far I have
only had two complaints.
That's why I'm asking about tempering, and not hardening. But I was
hoping, and fishing for, an explanation (or link) that would include a
juicy description of a machine that does all that and a bag of chips,
where you just put your blades on a cookie sheet and pop it in the "oven".
There was no indication in your earlier response that you were seeing info
on a do-all machine. As always, Google is your friend. I don't know if
commercial heat treaters have their production automated to the point that
parts go in one end, get heated, quenched in oil, tempered and finished
parts come out the other end. I would especially wonder about it when they
do what I assume is a relatively small batch that Steve would have. My
suspicion is that it would be somewhat more manual.
Only own 1 of his planes, waiting on his next sale to get another. The
planes are beautiful, the man behind them has an equivalent attitude.
Many thanks Steve, you're one of the good ones!
On Wed, 22 Mar 2006 22:26:48 GMT, "Chip Chester"
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