Stainless KMG clone test run, Video

JTknives

JTknives

Joined
Jun 11, 2006
Messages
8,651
well i got the stainless tooling arms in today. so i fitted one with my 8" contact wheel and tryied it out with a 50 grit blaze belt at 9000 SFPM :D :eek:. i could not help but take some video of me hoging a bit of steel. it is just sitting on a rollaway garbage can so i could barley pust on it with out causing it to move but man this thing is a hoging beast at 9000 SFPM. but its kinda hary when you hear it wind up to that speed and you just know if you have a belt break you will be in a world of hirt. so here it is. it was sapost to be longer but the battery died on the camera. but it just eats steel alive.

http://www.youtube.com/watch?v=WgaTEmhQojY
 
Sweet machine, JT. I always like the sound a machine like a big chuck on a lathe makes at high speed. I have heard of people putting buckets under their grinder, but this is ridiculous :D

Where are the glasses? Youtube generation kids like me are pretty impressionable :)
 
Keith_H said:
Sweet machine, JT. I always like the sound a machine like a big chuck on a lathe makes at high speed. I have heard of people putting buckets under their grinder, but this is ridiculous :D

Where are the glasses? Youtube generation kids like me are pretty impressionable :)
Click to expand...

ya i kinda forgot to put some on and when i started grinding i relized it.
 
befor i tryied the 50 grit belt i tryied a 400 or 600 grit gator belt. and at 9000 SFPM it removes 50 grit scratches :eek: ;) :thumbup:
 
Looks like you need a better garbage can:D. I was shown that a 400gr Norax will do a very nice job on 50gr scratches at 800 sfpm.

Nice grinder, bolt 'er down, Craig
 
I have been following your build for awhile now......You sir, have one serious mean machine there:thumbup:

Very nice build.

45
 
Would love if my KMG could reach blazing speeds like that. JT you would have loved the grinder at John's, a Bader B3 used 3x136 belts, ran about 9000sfpm, 5HP motor. You could stand with one leg against the wall and push in a 2 inch square bar and count the 1/4" inches it took off.
 
Sam Salvati said:
Would love if my KMG could reach blazing speeds like that. JT you would have loved the grinder at John's, a Bader B3 used 3x136 belts, ran about 9000sfpm, 5HP motor. You could stand with one leg against the wall and push in a 2 inch square bar and count the 1/4" inches it took off.
Click to expand...

You know Sam, Kerry has 2 more 5HP space savers now.... :)


Nice grinder JT! I work at ludicrous speed myself, but not QUITE 9KSFPM....my homebrew KMG would probably grenade at that speed....

-d
 
strahd71 said:
sounds like a freakin jet or something! awsome!

jake
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its not really that loud in person but its not silent eather. you can easley talk around it when its running. this thing can hit 11000-12000 sfpm but i dont think i want to be around it if a belt fails at that speed. but now if i maxed out the settings on the vfd i could run it at 23500 SFPM but i dont think the motor, bearings or grinder wouuld like that very much and it would probabley explode.
 
That's so amazing.

Keith: He could just get like a 24" contact wheel! Now THAT would be cool.
 
Mike I have my 24" incher running at a slow poke 355 rpm which = about 2200SFPM... and I jump from 80 - 320 - 600 grits :D the point here is the bigger the wheel the the less sfpm you need becuase there is more wheel to do the work, also at those speeds you would have to have it professionally balanced to keep it from walking all over your shop. As far as big belts CR Laurence makes BIG silica carbide wet belts for glass grinding that have a water stream injected onto it and it would keep you from overheating your steel.


Forgot to mention AWESOME WORK JT! That thing Sings!
Jason
 
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