Author Topic: Simple and cheap replacement punch for chain breakers  (Read 1350 times)

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Offline joe_indi

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Simple and cheap replacement punch for chain breakers
« on: June 13, 2012, 12:55:54 am »
I have uploaded a video on YouTube this is the link:

http://www.youtube.com/watch?v=itM286zYaXg


Joe

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Offline Cut4fun .

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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)
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Offline Al Smith

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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 . ;)

Offline 660magnum

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A2 is a air hardening tool steel.
We should share what we know... someone may learn...
That knowledge can live after us... and that "Pays It Forward".
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Offline Al Smith

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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 .

Offline 660magnum

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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.
We should share what we know... someone may learn...
That knowledge can live after us... and that "Pays It Forward".
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Offline Al Smith

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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 . ;)

Offline pete

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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

Offline Al Smith

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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 . ;)

Offline Cut4fun

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Joe

Received the punches in the mail. What a surprise.

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