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  1. M

    Can poly-carbonate sheet .062" be cut with sheet metal stamping dies?

    We die cut using steel rule dies up to .030 Anone familiar with sheet metal stamping care to comment?
  2. M

    Cut off tools and Inserts tip on breaking inserts.

    I was looking for a new cut off tool because the inserts on the one I am using are breaking. On another forum I found this little hint that may help others with the same problem, I am pretty sure it is the reason for my problem. "Important. When using carbide DO NOT use intermittent cooling...
  3. M

    10-24 broken bolt in expensive injection mold

    My neighbor does plastic injection molding. He snapped off a 10-24 bolt in one of the dies that's about 2 x 4 inches by 1/4 thick, it is part of a larger die. Holes are 1/4 deep. He wanted me to drill a hole in the broken bolt so he could use an extractor. long story short I said I would send...
  4. M

    SB9 with .009 play along axes do I shim?

    I noticed the chuck and spindle have .009 tho of play along the axes of the spindle. I don't think it was this bad a year ago. I see there is a clamp on the gear side of the spindle and I can see the play right there. Should I put a shim between the washer and the clamp nut or do i do something...
  5. M

    Suggestions to save this ink disk

    I refinished an old ink disk (cast aluminum I think) to find lots of deep holes and a bad hole from the original casting. Anyone have a suggestion on what to use to refill these holes so I can re machine it and make it workable? Lower right is a ridge you can see it needs a bit more sanding, I...
  6. M

    Installing quill spring

    I just want to know if a simple hose clamp will work as a spring clamp to install a quill spring. This one has popped out of the cavity on the machine side and is in the cover. Can i just use a hose clamp to squish it a little so I can move it into the spring cavity on the mill? (XLO knee mill)...
  7. M

    Is it ok to drive this Quill with a ballscrew?

    I am converting an old XLO knee mill and I have a question on driving the quill. Is it ok to drive the Quill from this point (Picture) The machine I have had an air over hydraulics system that had cylinder and chain drive to drive this point. (picture) I thought about using a 20 to 1 or...
  8. M

    Converting an Excello to full CNC

    I bought a nice Bridgeport mill from Techguy a couple of years ago and a nice little SB9 lathe last year and also built my own CNC machine using gecko stepper drivers and steppers using machIII. I just bought this Excello machine tonight. It runs great but I aim to convert the air over...
  9. M

    My first TASK 12 molded/machined part

    My brother restores old printing presses. Sometimes the ink disk has been lost. To make new ones I used TASK12 Urethane molding resin. This molded part will be glued to the back of a flat metal disk. Red one is the original. [/IMG]
  10. M

    Hot tub Cover 4 post lift

    I live in Minnesota, we have had three hot tubs in the last 30 years and many more hot tub covers. The covers typically are flat with crappy vinyl that the sun destroys after about 3 years. I was sitting in the hot tub this morning thinking about an automatic cover. Turns out the same idea i had...
  11. M

    Boston Gear unit fails, question of maximum weight.

    I have a machine I have had to replace this gear unit on three times now' The brass gear that rides on the worm gear just gets pummeled. If the gear unit is rated at 527 lbs torque, How much weight can it lift, or should it lift. The cam rides on a 1.5 inch ball bearing. I plan to add...
  12. M

    What is a better way to make this part

    http://www.practicalmachinist.com/vb/members/metron9/albums/southbend-parts/2359-truck/ I am turning 1 inch stock to .8 Then I turn the .1 + .325 + .1 (total .525) to a diameter of .625 That is straight forward not a problem. but then the .325 x .625 dia has to be turned to .5 dia. I use a...
  13. M

    1/16 X 1/2 mild steel needed

    I can not find 1/16 x 1/2 steel on speedy or metals online except for O-1 tool steel. They are for small letter presses hold down bars. I machine a small bushing and silver solder the two pieces together. I used some .080 steel from file folder hangers but I really want 1/16 thick.
  14. M

    How would you machine this?

    My brother restores old letterpresses link below. The ink plate is cast aluminum and has an embedded 3/8 steel shaft in a 3/4 inch casting that comes out the back. The rollers were left on the front of the plate and there is rust pitting in some small areas where the rollers were. He typically...
  15. M

    Problem drilling - tailstock wheel slips

    I was drilling my first holes with my new chuck and the tail stock wheel slips when I increase pressure on the bit. I don't see any way of adjusting it. What do I do? It doesnt seem to slip when I pull it back though to remove the M2 taper shank.
  16. M

    Toolpost holder handle stuck

    I have a few small problems. I decided to take the cross slide and tool holder apart to clean it up. I removed the cross slide and found no base gib. I can't seem to find where to buy a replacement. I made a tool to remove the screw that holds the handle on the tool post holder but I am unable...
  17. M

    Two questions on the 9A tailstock spindle

    I just received my new box of toys today that include MT2 Tangs. I have read the posts on tailstock spindles being worn and I did send a message to Craig about a new one and read about reaming. Question is though, when you push the MT2 tang into the spindle should you be able to twist it out...
  18. M

    New owner South Bend 9A

    I just picked up an 9A I have a parts manual but not a running manual. Never operated a lathe before and I just got started milling last year when I bought my first Bridgeport Mill. The table has a steel plate on top, when i got it out of my pickup i could not for the life of me get it back up...
  19. M

    Southbend 9A Craigs list

    I am waiting for the seller to contact me. I bought a Bridgeport Knee Mill last year and I have been thinking about adding a Lathe. I thought I would just post the link here for any thoughts advice or comments you guys have as I have no experience whatsoever with lathes. Southbend 9 Inch...
  20. M

    Links to the guts of high end CNC machine centers

    Last year I bought a nice Bridgeport mill and then built a small CNC machine that has a high end of 200ipm using a 2.5HP Porter Cable router and nsk ballscrews and ball slides. The manual Bridgeport of course has ways and is very sturdy. I would like to build another small CNC machine that can...
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