Opinions needed on Magnacut.

I watched the trollsky video and it looks pretty neat as well as applicable to my real job. I went to the gesswein page and I kinda feel like Bubba from Forest Gump. They got ceramic stones, diamond stones, finishing, silicon carbide, aluminum oxide.... I'm sure there's more.

What flavor and color of stones are preferred for the current topic? How about hardened tool steels? It's definitely an industry page. They don't explain crap. They assume if you're there, you know.
 
I use 3 different types of stones. Falcon EDM, Falcon N class and Falcon PO, EDM is harder and used to remove stubborn scratches near the plunge. N class is more frangible and conforms to the concave shape of hollow ground better, also removes material pretty fast. I follow with the PO stone as they are much softer and leave a nicer scratch finish for follow up with paper.
 
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I used the Falcon N on carbon damascus blades and they worked pretty well. I also use the orange knock off brand as well as the white oil soaked and blue gesswein, too. Its nice to have a variety to try on different steels. Softer stones leave a nicer finish, but I usually plan to back to 400 or 600 SiC sandpaper and work back up.
 
To chip in a little. I oil quench in medium speed oil to dark and then clamp in steel plates. All stainless. No warps. Had some issues with Al plates and decided to check oil. Works fine now.
 
JoeBusic said:
To chip in a little. I oil quench in medium speed oil to dark and then clamp in steel plates. All stainless. No warps. Had some issues with Al plates and decided to check oil. Works fine now.
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Interesting. What do you use to prevent decarb? I don't see your method working well with steel foil.
 
HPD said:
Interesting. What do you use to prevent decarb? I don't see your method working well with steel foil.
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Nothing. I grind it off. Always use a thicker piece and skin them down. Higher temps require shorter soaks, so no biggy.
 
To mirror what Hoss mentioned when I first started experimenting with magnacut I tested some anti scale compounds to see if any would work to avoid using foil (none worked even stuff rated for temps up to 2150F) starting with 3/32” stock to remove all of the decarb I was left with less than 1/16” stock, it went much deeper than expected. Foil and plate quenching works far better in my opinion.
 
DevinT said:
Be careful, MagnaCut is more prone to decarb than other alloys.

Hoss
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How is it related to S90V? S90V is the most decarboid I handled. But it's still OK. From initial 4.5mm stock I get clean and hard 4.25mm. Usually grind it to 4mm to round the number.
 
JoeBusic said:
How is it related to S90V? S90V is the most decarboid I handled. But it's still OK. From initial 4.5mm stock I get clean and hard 4.25mm. Usually grind it to 4mm to round the number.
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Probably worse, I always use foil but I have forged a bunch of it.

It’s something worth testing, I have seen certain alloys more prone to decarb than others.

Hoss
 
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