What's new

Recent content by michiganbuck

  1. michiganbuck

    Help chatter while machining a shaft (CNC lathe).

    I usually say sharpness of the edge, positive rake for steel that wiill file, and the toolbit/insret angled/set so cutting forces will swing the bit/insert away, not deeper into the part.
  2. michiganbuck

    Interesting Sander

    Really nice..and it likely can still be use as a grinder.
  3. michiganbuck

    machining small pulleys. Need to center 2mm holes accurately

    One can buy a 12" digital caliper for around $40 and attach it to a mill travel to get a half-thow likes of a DRO. With that, or just rubbing a collet held dowel on the part I could get a spot drill to about .002 close to center.. but still turning the part 180*, and getting the drill to start...
  4. michiganbuck

    Moon landing or or not?

    I would not wish to land on the moon in a device that would fall over with hitting a rock. Pretty soon there will be so much junk on the moon your rocket would likey get a flat tire and you would need to call Earth for a tow truck. I dont think Verizon has a cell tower there so the call would...
  5. michiganbuck

    machining small pulleys. Need to center 2mm holes accurately

    QT: (Scribing lines and center punching is asking for inaccuracies..) Agree, I figure about .003 if you do a good job of it. Drilling from each side the hole will not be a line bore throught the part. Drilling one-shot throught the part will be a little more like a line bore but may wonder and...
  6. michiganbuck

    machining small pulleys. Need to center 2mm holes accurately

    QT: carbid Bob Before we all go into the 1001 ways to do this.... what do you have? One can use the mill's hand wheel numbers to measure pretty close. fudge up a scribe that fits the mill spindle or mill head. put the part with hub horizontal in your mill vise. Travel down to touch the held...
  7. michiganbuck

    Ot...ship hits bridge

    My fishing buddy Jammie was towing a big barge for Ryba Marine on the Mississippi and the tugs engine quiet. He called authorities ..and then they got it stared.
  8. michiganbuck

    Ot...ship hits bridge

    Latest news(I just made up) is that if we dont hurry up to set it free they will chatge us $20,000 a day for renting a cargo ship.
  9. michiganbuck

    machining small pulleys. Need to center 2mm holes accurately

    Putting the holes on the OD of a pulley hub?..if holes are 180* apart. For about .003 or so you can clamp each to a 123 boock ,then with a JoBlock stack scribe one side then the other with a height gauge scriber, and do a nice job of punching the location. Then bump the vise held part with an...
  10. michiganbuck

    Low budget center grind

    I used to do that with on B&S 13 grinder with a machine center spinnig on bearings to the centers taper, and cranking with a stack of rubber bands to a Dremel (die grinder) also did live centes that way. often getting <0001" One time the big shop paid over $8k for a new spindle that showed the...
  11. michiganbuck

    Ot...ship hits bridge

    What is the value of the ship and its cargo? by maritime law that is how much the ship and owners should pay. That is the law..why is there qoestions about it. Who gains by the taxpayer footing the bill. If the bridge lights failed we would pay to repair the ship, trun around is fair play. Only...
  12. michiganbuck

    Anybody make a small bevel protractor?

    A shame they don’t have an arrow to show what side of the scale is the right one, and they don't usually come in metric. or are they in metric and imperial is left out? And how do they work if you are left handed?
  13. michiganbuck

    Ot...ship hits bridge

    The accident is likely our fault for us not giving free college scholarships to China ship crews and captains. It is a darn shame that other countries students don't get a USA proveded free ride on education. We could put our house in hock to pay for it. It might lower the world crime rate if...
  14. michiganbuck

    Ot...ship hits bridge

    Just give Baltimore to China and then let them fix their own bridge.
  15. michiganbuck

    Precision Degree in the ID

    We used to sharpen angles to valve seat cutters to .0001 in a 3/8" length with an old cinci #2 Tc grinder. Drills? likely a 3 flute reamer would be better. Call Special Drill and Reamer in michigan to desigh and make your cutters. Often spinning a circle grind to a cutting tool at the inspected...
Back
Top