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  1. M

    Deep hole grinding

    Good morning. Thank you for all of the feedback. I am of the same mindset...the set-up is pretty solid...I do not think that deflection is the issue...but what is the root cause. And I am sad to say that I have not personally checked the parts, or ran the parts, but I had someone do it under...
  2. M

    Deep hole grinding

    Attached is the picture, somewhat staged. Shows the part, the tool in the holder with the typical projection.....
  3. M

    Deep hole grinding

    Good morning. In the beginning of this project, the guys did try to use an air spindle, but there were issues. One of which was that the spindle didn't have enough torque...second, they were unable to execute a tool change due to the air line. The grinding pin/nib...0.250" carbide...
  4. M

    Deep hole grinding

    Hello eKretz, Thank you for the reply. I was trying to avoid the "Christmas tree effect" of the hole, that one would expect to see if you stepped down thru the hole...the tool would definitely preferentially wear....a full depth cut should (famous last words) wear evenly. The holes are ending...
  5. M

    Deep hole grinding

    Buck, Good morning. Perhaps it is that I haven't had my coffee yet, but I do not understand your reply...can you elaborate? Thanks, Mark
  6. M

    Deep hole grinding

    Hello all. Its been a while since I have been on, hope all is well. I am working on a project that I am looking for a little advise on. The material is silicon carbide based ceramic, 0.625" thick. The task is to open up pre-existing holes from 0.285" diameter to a final dimension of 0.315"...
  7. M

    long LOC diamond grinding NIBS

    Hello all. I am in the market for diamond grinding NIBS; 0.250" diameter x 0.700" length of abrasive...preferrably metal bond, or VIT bond; 100 and 220 grit for a wet grinding operation...it seems as if the LOC seems to be the issue; does anyone have any suggestions? Thanks, Mark
  8. M

    Mist collector placement

    Ager, We have small Microair units on our surface grinders; they are mounted from the ceiling with pickup points on the wheel housing, and dowd stream of the wheel itself. The drain from the unit drains back into the coolant tank.
  9. M

    .008" Slitting Saw-Student needs help!

    Hello, have you thought of stacking your slitting saws with a spacer in between?
  10. M

    24" x 48" granite surface plate AND wtb

    We are located in Delaware...we have a 6' x 7' x 18" thick grey Starrett surface plate that I think that we are trying to find a home for...
  11. M

    Reciprocating surface grinding vs rotary surface grinding

    Hello. Back in the day, we had probably a dozen "swishers"....neat little machine....
  12. M

    Flange torque specifications

    Thanks to all of the replies! :) I do believe that the flanges are flat, without grooves...but I will double check. These systems are at least 20 years old...I wouldn't be surprised if there are better connections out there...that is worth looking into...
  13. M

    Flange torque specifications

    I like "Stros" suggestion of taking it to 25 to 30% less than original thickness...I wonder If I could use gage pins as stops....obviously tightening them in a cross pattern...
  14. M

    Flange torque specifications

    Thank you. Well, apparently, these aren't well designed...no "hard stop" integral to the flange. I did attempt to use a smoke pencil to check for gross vacuum leaks, but I was unable to see any evidence of a leak. Pressurizing the system is not an option.
  15. M

    Flange torque specifications

    Hello all. I hope this is the appropriate place for this question. Take a look at the picture attached. Roughly 9" diameter flanges, 8, 3/4" bolts. Between the flanges is an 1/8" thick Viton rubber gasket, designated as a #150 size. What I am looking for is the recommended torque spec for...
  16. M

    Mist collectors for surface grinders

    Steve, I believe they vent out the side, and back into the shop. Good point, exactly my thoughts; either there is too much suction (which there isn't) and it is blowing by the filters, or the filters are crap....
  17. M

    Mist collectors for surface grinders

    Good morning. Yes, the units are new. I believe that they vent out of the back...need to double check that. They do have a drain that leads back into the coolant tank of the machine; just a bad camera angle. The intake could have more of a pitch than it does, but it does slope towards the...
  18. M

    Mist collectors for surface grinders

    MB, are you suggesting that the coolant flow is too much? Are you able to share a pic of your setup? I did a little digging on the mist collectors; they are rated at 600 CFM...not much, but again, we are looking at collecting the fine mist...I guess that we aren't doing a good job at that, are we
  19. M

    Mist collectors for surface grinders

    Good morning. EKretz, that is a good idea; I could change the filter on a Friday, and check it on Monday to see the difference, but nothing would be running over the weekend either....not running the grinders would not allow the boss to purchase another porsche...:). I attached a pic of the...
  20. M

    Mist collectors for surface grinders

    Hello all. We have a few Okamoto surface grinders; 3 1632 machines, 1 820, and expecting a 2448 machine soon. Two of these are located in a small R&D shop along with a HAAS VF2. We noticed the air intake above the VF2 was turning black, assumably from the coolant mist coming from the open...

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