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May 22, 2019, 13:36:15 pm


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 1 
 on: Yesterday at 19:58:26 
Started by shorton - Last post by Bob La Londe
Turning off toolpath display may help no matter what interface is used. Worth trying.

Definitely helps on larger jobs.  I put a tool path display button on my home page on all my Mach controlled machines. 

 2 
 on: Yesterday at 18:28:26 
Started by Bob La Londe - Last post by Bubba
Bob, did not use the SC520, so can't comment on that particular coolant.

 3 
 on: Yesterday at 16:50:27 
Started by Bob La Londe - Last post by lloydsp
Bob,
I mill and turn mostly 6061, and a little 7075 for high-stress parts.  I do a few steel parts, but only a few.  I've never seen any discoloration or corrosion on any of the materials.  In fact, the SC520 seems to protect steel parts, if I forget to clean and paint them for a couple of days.

And, I HAVE 'bad water' in my shop.  So that isn't an issue, at least with SC520.

Lloyd

 4 
 on: Yesterday at 16:41:36 
Started by Bob La Londe - Last post by Bob La Londe
To each is own, but I use Kool Mist on my lathe and mill as well with result I'm happy with. It is only used as mister with emphasis on using as little liquid as possible with lots of air behind it. Another reason I prefer this one over other because it does not corrode 2024, 7075 aluminum as bad as other coolants.

Have you seen ANY corrosion from SC520 on aluminum?  

I use it every day and often on weekends on 6061 and I've never seen any issues and it cleans up with water if I forget a part on the mill over the weekend.  I do also run some 7075 and 5052 for special applications and never noticed any issue with those either.  Since switching to SC520 I've got thousands of hours running it on aluminum.  Maybe tens of thousands of hours.  I am currently running it on 5 CNC mills.  On the lathe I usually just brush on light (or heavy) cutting oil.  Flood would be better for dimensional stability, but I don't use it quite enough to justify filling the coolant tank.  That might be an argument for mist I guess.  I just don't like breathing the stuff.   

On the other hand I have definitely seen yellow and brown parts come off the mill when using Kool Mist with aluminum.  Kool Mist tried to blame my water until I pointed out I was running distilled water.  At the time I was buying 50 gallons at a time at the grocery store.  Now I have an automatic distiller in the shop.  I sent them pictures and they decided rather than help solve the problem they would ignore me.  

Master Chemical (Master Fluid Solutions) guys have been gungho to help me with any question I asked no matter how stupid.  I just haven't had any issue with it though.  

 5 
 on: Yesterday at 15:58:17 
Started by Bob La Londe - Last post by Bubba
To each is own, but I use Kool Mist on my lathe and mill as well with result I'm happy with. It is only used as mister with emphasis on using as little liquid as possible with lots of air behind it. Another reason I prefer this one over other because it does not corrode 2024, 7075 aluminum as bad as other coolants.

 6 
 on: Yesterday at 15:18:03 
Started by shorton - Last post by Garyhlucas
Turning off toolpath display may help no matter what interface is used. Worth trying.

 7 
 on: Yesterday at 13:37:45 
Started by shorton - Last post by shorton
No, I'm using a UNC100 (I think) USB driver.  That goes to a parallel port in a Geko drive.

 8 
 on: Yesterday at 12:05:39 
Started by Bob La Londe - Last post by lloydsp
Bob,
I don't do much mist work -- mostly flood.  But when I do use mist, I use the SC520; it's the only coolant I keep for my machines.  For me, it works just fine.

Also, FWIW:  My home has desulfured/deionized water, but the shop is on an untreated well.  So the SC520 seems to work well even in water with quite high calcium content (also some iron and even a little sulfur).

Lloyd

 9 
 on: Yesterday at 09:54:33 
Started by AsErBo - Last post by AsErBo
Quote
I thought the same and that's why I asked.
I am thinking whether it will be possible to invert the 'dir' signals or in case of stepper motors just swap the ends of one coil and make the machine move in reverse direction so that X0/Y0 is at the lower left corner. But perhaps it will requite limit and end switches reconfiguration.

Well, there are no steppers in this machine, only DCservos. Changing direction on the servos are super easy, but then the encoders are wrong, possibly the tach also.
And not to mention that all five position switches (home, min,max,min overtravel, max overtravel) would have to be rerouted.
And I do think this would lead to quite the cock-up of the PLC in the controller...
 I'd rather prefer not having to go down this route :-)

 10 
 on: Yesterday at 03:53:42 
Started by shorton - Last post by dh42
Quote
Maybe I was at a motor harmonic, or the motors were behaving different when hot.

Yep ... or a driver that starts to die .. ?

Are you using the // port ?

With // port and a big 3D Gcode I also encounter strange stops (but no steps lose) until I disable the toolpath display in Mach3 (I had an integrated VGA card on a small P4 2.8Ghz PC) ; This happens only one time, and the Gcode was something like 500K lines ...

++
David

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