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  1. Jmccrack

    Rotary Table Alignment

    Hey guys. All the conventional wisdom says to align a rotary table you put a dial or a coaxial indicator or a rod in the spinal and swept the center hole of the rotary table. Than rotate the spindle and 0,0 your table. OK..........After you do that put the dial on the rotary table top and sweep...
  2. Jmccrack

    Rotary Table C/W DRO-

    I have a surplus 4-3/8” Grizzly rotary table with attached DRO. It work beautifully. Vey tight and easy to use.Paid over $1200.00 CAD for it. Never really used on a job. I would like to get $750.00 for it. FOB here.
  3. Jmccrack

    Rotary table and Stepper Motor

    I am in the process of adding a stepper motor and driver to my 8” rotary table . The stepper I am going to use (Nema 23} has a shaft out both ends. I want to. 1-take the handle and dial off the rotary table 2-Mount the stepper to the RT shaft via flex cplg 3-Mount the handle and dial to the...
  4. Jmccrack

    Inventor wizard 6 Cyl Radial

    Hey All I have spent the last few months building the 6 Cylinder Radial Pneumatic Engine. After assembly it will not run. So I started to try and analyze what the problem may be. I think it is in the air valve configuration. The crank has an offset pin that move a valve eccentricitly over a set...
  5. Jmccrack

    6 Cyl Radial Air Eng (GrabCad)

    So I have spent many hours building all the parts and pieces for this six-cylinder engine. I put it together and I seem to have a problem with it. When I rotate it by hand the center wheel that holds all the conrods seems to fall behind in rotation to the crank shaft. What happens is the conrod...
  6. Jmccrack

    Stuart Major Beam Engine

    I was wondering. Has anyone ever built this engine from scratch without castings?
  7. Jmccrack

    It will not run.....

    Help guys this is not rocket surgery! It will almost start but not quite. It should be simple. One side at TDC steam valve let’s steam into the top of that chamber drives the piston down . The other side BDC the steam valve let’s steam into the bottom of that chamber and drives the piston up. I...
  8. Jmccrack

    Grizzly Rotary Table c/w DRO

    Hey guys. Does anyone out there have one of these? Grizzly T1191
  9. Jmccrack

    Grizzly 4 3/4” Power Rotary table c/w DRO

    Hey guys need a little help. This is a new item for Grizzly. It looks interesting. It says it has a 4a drive motor. I cannot find what size stepper motor that is. Does anyone have any experience with this unit or one like it? Sherline has one that looks close and it is a #23 framestepper motor...
  10. Jmccrack

    Elemers Pumping Engine

    I have downloaded the plans for this Engine from John Tom. But I see on some of the posts for building this engine what looks like blue prints. Does any one know where I might be able to get a set of prints for this engine. I see on Grab Cad a couple of 3D drawings but no dimensioned prints. Any...
  11. Jmccrack

    VFD on a Grizzly Mill

    Hey guys just thought I would share. I installed a new 2hp 3ph motor on my Grizzly mill. As well a a Leeson VFD. Other than the fact the motor on the mill was metric and the motor I bought was all imperial the change over was very easy. Single phase 220 in and 3 phase out. The Leeson VFD has a...
  12. Jmccrack

    Photos

    Can someone tell me why I an still not see most photos.
  13. Jmccrack

    5c collet chuck

    Hey guys. Just thought I would try to give some of you hope out there. I had a need for a 5c Collet chuck with a D1 4 back. So I bought one off Amazon.ca. Inexpensive Chinese $370.00 can. The spec on line was .0006” tir. When I got it the TIR was as specked maybe .001”. But the outside on all...
  14. Jmccrack

    Rotary Table Problem

    Hey guys. I have an 8" rotary table. When I set it at zero and the micro handle to zero then rotate 360 deg back to zero on the handle the table is out 2 deg. Any thoughts?
  15. Jmccrack

    Milling Problem Solved

    Hey Guys. Just thought I would show you a pic of the rough finished cylinders. I solved the problem of milling a radius. With a little filing it should look OK. Now on to the next parts. Thanks for the help.
  16. Jmccrack

    Steam Engine Factory Layout

    Has any body ever built this? https://d2t1xqejof9utc.cloudfront.net/screenshots/pics/9f2ab0abbc644a1ecc8b7ece0d8dcbf6/large.JPG
  17. Jmccrack

    Milling problem

    I am using a rotary table to mill the top of my cylinder blocks. As you can see in the pictures I am getting a line in the center of the cut. The end mill is sharpened low in the center
  18. Jmccrack

    Dual Horizontal Steam Engine Factory Layout

    I am starting to build this engine using the J. Galba drawings. I have 2 questions. 1-Has anyone built this engine here yet? 2-I am building the cylinders out of one piece each. I know how to set up to mill them but I was wondering if there are any build logs on line.
  19. Jmccrack

    Centrifugal Pump Impeller

    Has anyone had any experience in building a Centrifugal Pump Impeller like the one J galba uses on his beam engine?
  20. Jmccrack

    Upscale Model Engine

    Just wondering about upsizing a beam engine. I downloaded plans for "Gerrys Beam Engine". I would like to make it bigger by 50%. Is it as simple as adding 50% to everything.
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