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#Post#: 9724--------------------------------------------------
Simple and cheap replacement punch for chain breakers
By: joe_indi Date: June 12, 2012, 11:55 pm
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I have uploaded a video on YouTube this is the link:
HTML http://www.youtube.com/watch?v=itM286zYaXg
Joe
#Post#: 9731--------------------------------------------------
Re: Simple and cheap replacement punch for chain breakers
By: Chainsawrepair Date: June 13, 2012, 7:28 am
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I was wondering about something like this since baileys sold all
those woodland pro breakers and spinners in the past and now
dont sale them or the replacement parts for them. :o :(
I had thought about checking with someone like Al Smith on
making a punch (but knew his lathe was broke down). Was
wondering how to make the punch tip hardened and it looks like
your idea takes care of that too.
Thanks for sharing with us and I will test the punches out in
the future too. Thanks. 8)
#Post#: 9751--------------------------------------------------
Re: Simple and cheap replacement punch for chain breakers
By: Al Smith Date: June 14, 2012, 4:09 am
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That sounds like a much more simple method than carving out a
new tip .
Hardening steel isn't a big deal though .You use some alloy of
steel like 4140 ,A2,O2 or some other steel that has enough
carbon to harden .Heat it up until it's about the color of a
pumpkin and toss it in a bucket of oil .
There are methods of hardening mild steel but that's a little
off of topic .
Probabley a grade 8 cap screw would be hard enough for a punch
but the roller bearing is still more simple .
I don't own a punch my self .Just grind the rivet heads off and
seperate the link with a thin chisel ----old school ya know . ;)
#Post#: 9752--------------------------------------------------
Re: Simple and cheap replacement punch for chain breakers
By: 660magnum Date: June 14, 2012, 6:24 am
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A2 is a air hardening tool steel.
#Post#: 9771--------------------------------------------------
Re: Simple and cheap replacement punch for chain breakers
By: Al Smith Date: June 15, 2012, 7:20 pm
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That it is but--oil will get er done too . ;) Truth be told I
just use what I get a hold of .I can't always be choosey .Fact I
carved a spur out of A2 ,did the oil deal then annealed it back
to probabley around 56-60 Rockwell and didn't have any problems
.
You know I wouldn't dream of doing my half wit metalurgy on a
critical part but for a chainsaw spur it worked . ;)
On second thought I did make a hob out of A2 to cut a worm wheel
on a lathe .Talk about a long drawn out process but I got er
done finally .Cutting a worm wheel on a lathe however is another
story all together .
#Post#: 9772--------------------------------------------------
Re: Simple and cheap replacement punch for chain breakers
By: 660magnum Date: June 15, 2012, 7:57 pm
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A crane operator guy was snooping around the steel rack and
sawed himself out a wedge for his log splitter from D2. He stuck
it in the heat treating furnace that was already on and got the
wedge red hot and then dumped it in the water trough. Needles to
say, it blew up like a grenade. He got wet. I never saw him
hanging around the steel racks any more.
#Post#: 9773--------------------------------------------------
Re: Simple and cheap replacement punch for chain breakers
By: Al Smith Date: June 15, 2012, 8:58 pm
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He evidently had no idea that a majority of splitter wedges are
mild steel .That water deal might work to cool a horse shoe or
something but 'taint real smart for carbon steel . ;)
#Post#: 9775--------------------------------------------------
Re: Simple and cheap replacement punch for chain breakers
By: pete Date: June 15, 2012, 9:49 pm
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Worked in a foundry for a while when I was younger and we used
to dunk almost white hot manganese mix rock crushing mandrels
into cold water. They used to knock them out of the mould and
pop em straight into the furnace while they were still hot, keep
em there for 20 to 30 hours around 1.500 degrees f, then cold
dunk them , what used to go bang was the big pieces of resin
mix sand that was used as the mould
#Post#: 9776--------------------------------------------------
Re: Simple and cheap replacement punch for chain breakers
By: Al Smith Date: June 16, 2012, 6:01 am
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From what little I know they say plain water boils instaintly
off to steam which creates bubbles around the steel and usually
isn't a good quench method .They say the old time blacksmiths
used salt water .
Oil is kind of scarey the first time you do it .The fire flies
but doesn't really do anything except sound like fish dumped
into a deep fryer .Doesn't smell like fish though ,burnt oil .
It's a bit of a side track from using a roller bearing for a
punch .However there must be a zillion web sites that cover
metalurgy of a sorts .Probabaley "anvil fire " is one of the
better on the subject .
I could ramble on for hours about methods and old timey
blacksmith tricks of the trade you won't find written any where
but has just been passed on by word of mouth from people who
where born prior to 1900 .Long gone now but never forgotten . ;D
My dad was a wizard at this stuff ,as was his father ,his
fathers father etc .I mean with a name like Smith it goes way
back . ;)
#Post#: 10736--------------------------------------------------
Re: Simple and cheap replacement punch for chain breakers
By: Cut4fun Date: August 4, 2012, 8:37 am
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[quote author=joe_indi link=topic=979.msg9724#msg9724
date=1339563354]
Joe
[/quote]
Received the punches in the mail. What a surprise.
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