Dan C
I have a piece of leaf spring steel that I'm assuming is 5160 steel.  It's 1/2" thick and 3 1/4" wide.  I'd like to cut off an 8" long piece and then cut the 8" piece length wise so that it is 2 1/2" wide.  I've normalized it.

I want to cold cut it. I'm going to use the piece as a two-part blade in a blacksmith guillotine that I am building, and hot cutting it would probably distort the metal so that it wouldn't slide up and down in the slot very well.  Is there a power tool that's reasonably priced that would do this job?

I have a 14" metal chop saw (Evolution), but it's designed for mild steel.  I also have a 10" chop saw with a Diablo grinder/cutter type cutting disk on it.  It would take me hours to get through this piece using this disk, based on how it went for the first 15 minutes.

I feel like maybe I'm not aware of the right tool for the job, and hope that someone with experience can point me in the right direction.  Thanks!
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Anthony San Miguel
I've cut heavy gauge RR rail with my Milwaukee metal cutting bandsaw in about 10 minutes. I would imagine that any metal cutting bandsaw with a decent blade would cut that leaf spring fairly easily, especially since you drew down the temper.
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Hank Rearden
I just got the materials to make the same type of guillotine out of a truck spring that I have at home. Hope to have it done this weekend for my fullering for iith. I hope you post your project under jigs and rigs and blacksmith tools. My plans are similar to Lorelei Sims design in her book backyard blacksmithing.

I've used A 4-1/2" grinder and cutoff blade. You'll use up the blades pretty quick. At least I did. Don't twist the blade in the groove.
code[Maglio.gif]  Keep the fires burning hot!
2020 ABANA Conference in Sarasota New York. June 3rd. through June 6th. Plan now!
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jmccustomknives
Well cold cutting wouldn't go over too well since 5160 will air harden somewhat.  I'd suggest getting a metabo or a smaller hand grinder with a slicer wheel.  I'll give you the airgas p/n's for the wheels.  If you've never used them they are wonderful and every smith needs them in their toolbox.

the 4 1/2 X .040  64000806
the 6"    64000810

You can get these wheels at Lowes also.

Rule #10;  "I can make that" translates to; "I'm to cheap to buy it new."

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Skarzs the Cave Troll
Cutting leaf springs is a pain in the. . . everything.
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Dan C
Hank Rearden wrote:
I just got the materials to make the same type of guillotine out of a truck spring that I have at home. Hope to have it done this weekend for my fullering for iith. I hope you post your project under jigs and rigs and blacksmith tools. My plans are similar to Lorelei Sims design in her book backyard blacksmithing. I've used A 4-1/2" grinder and cutoff blade. You'll use up the blades pretty quick. At least I did. Don't twist the blade in the groove.


Ended up going with my angle grinder with a 4 1/2" cutoff grinder disk.  It's doing fine, but it's a long process.  Should have thought of this right off.

I'll post some pictures and specs on mine when I get it done, as you suggest above.
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Dan C
jmccustomknives wrote:
Well cold cutting wouldn't go over too well since 5160 will air harden somewhat.  I'd suggest getting a metabo or a smaller hand grinder with a slicer wheel.  I'll give you the airgas p/n's for the wheels.  If you've never used them they are wonderful and every smith needs them in their toolbox.

the 4 1/2 X .040  64000806
the 6"    64000810

You can get these wheels at Lowes also.


I have a Milwaukee angle grinder that takes a 4 1/2" disk.  I'm using a Diablo disk on it right now, and it's getting the job done, although I think I need to put a new disk on.

Have you used the Diablo disks before?  If so, would you recommend the Metabo disks over the Diablo disks?
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jmccustomknives
Can't say I'm familiar with that brand.  In my experience most of the wheels are pretty comparable in performance.  Cutting on high carbon steels skews the performance too, a wheel might do well on mild steel but not so much on high carbon.  I tend to like a softer wheel on the high carbon as they don't seem to build up as much heat.

Rule #10;  "I can make that" translates to; "I'm to cheap to buy it new."

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Skarzs the Cave Troll
I've used Harbor Freight cut off wheels (they were ten for three bucks), and other than the one that was slightly warped, they work great. So. . . I can't really give any recommendations from one brand to another.
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Dustin Stephens
Walter abrasives makes an amazing cut off disk, go to their website and fill out the form and they will send you a cut disk, grind disk and a flap disk to try for free
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anvil
Anneal it, don't normalize it. Then cut with a hacksaw.

Or bring it up to a yellow then hot cut it. Then

Normalize
Anneal
Do any cold work
Harden
Temper.

If you are worried about losing the temper, well you have already done that when you normalized.
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Kiwi tussock
How I admire all the knowledge you fella have on this site.
GREAT words guys, and thanks from down-under.
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