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  1. N

    my 1st engine build, a PM Research 3B, on a Unimat db-200

    I dont have a large shop either, but it didnt stop me! Thanks for looking, and thanks to the other posters.
  2. N

    Complex casting

    This is an interesting way to make castings! THe other posts about metal shrinkage are right, my own experiments in casting soft metals like brass and aluminum, show that the metal pulls away from the mold as it cooled, not much bt some, did you make your positive a little smaller so that you...
  3. N

    my 1st engine build, a PM Research 3B, on a Unimat db-200

    Thanks guys, I do love steam power!
  4. N

    my 1st engine build, a PM Research 3B, on a Unimat db-200

    It became a real steam engine today, I ran it with the PMR BLR 2 I built a few months back. I have to say the PMR kits are nice and sound, the prints and instructions are good and accurate. hmmm what to build next? http://www.youtube.com/watch?v=Ez598qrTvcc&feature
  5. N

    my 1st engine build, a PM Research 3B, on a Unimat db-200

    Thanks guys, not sure what to build now, I have certainly learned allot about the limits of the unimat, but it seems to be a nice little lathe, I might build the little upright PMR engine, or the little boiler kit they have. I built the big BLR2 and it was great fun. For the moment though, I...
  6. N

    my 1st engine build, a PM Research 3B, on a Unimat db-200

    Got the pieces and parts painted, and assembled, now it runs! I have some bleed by on the slide valve, that I will fix with a new valve a little tighter fitting, but it works. Next to mount it on a wood base that matches the other engines I have, or I wonder if it would work on the waste...
  7. N

    my 1st engine build, a PM Research 3B, on a Unimat db-200

    A little more complete, the crank bearing and crank parts are now done, I also painted the base and inner flywheel.
  8. N

    my 1st engine build, a PM Research 3B, on a Unimat db-200

    I got the connecting rod and slide worked out today.....
  9. N

    my 1st engine build, a PM Research 3B, on a Unimat db-200

    A little more progress, the piston, glans and support parts are made....
  10. N

    my 1st engine build, a PM Research 3B, on a Unimat db-200

    I agree Bill as long as you take your time, it can be done. The only issue I have had is that it's hard to mill the cast iron on the base, once it's secure on the milling table the cross bars can let the whole thing shift to much to mill the top of the base. So I decided to do it by hand and...
  11. N

    my 1st engine build, a PM Research 3B, on a Unimat db-200

    Got the valve fitted and started on the piston...
  12. N

    my 1st engine build, a PM Research 3B, on a Unimat db-200

    Got a little bit more done... The center of the eccentric is now done, onto the outside...
  13. N

    my 1st engine build, a PM Research 3B, on a Unimat db-200

    Thanks Bill, I am enjoying the work. And I done a little more today:
  14. N

    my 1st engine build, a PM Research 3B, on a Unimat db-200

    Thanks guys! Got the head bored today, as well as the valve guide, and steam channels...
  15. N

    my 1st engine build, a PM Research 3B, on a Unimat db-200

    Thanks Bill! Do you or anyone else know a good source for 1/4" shank boring bars?
  16. N

    my 1st engine build, a PM Research 3B, on a Unimat db-200

    little work done on the crank, I have been out of town for a few days so no work done until today.... I was going to turn the cylinder ends, but when I tried to reverse my chuck keys, one of them is broken (missing one of the inner guide teeth) so now I search for a new chuck...
  17. N

    my 1st engine build, a PM Research 3B, on a Unimat db-200

    thanks !
  18. N

    my 1st engine build, a PM Research 3B, on a Unimat db-200

    Had a few more pics to add, I drilled for the crankshaft... very slow cutting...
  19. N

    my 1st engine build, a PM Research 3B, on a Unimat db-200

    THANKS!
  20. N

    my 1st engine build, a PM Research 3B, on a Unimat db-200

    Thats just like the one I have on order :)
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