Search:

Type: Posts; User: coryatjohn

Page 1 of 20 1 2 3 4

Search: Search took 0.02 seconds.

  1. I suggest having on hand several 1/4" two flute...

    I suggest having on hand several 1/4" two flute upcut end mills to start with. They are the most commonly used and the least expensive. You'll likely break a few of these when you start out so having...
  2. The larger the diameter of the cutter, the more...

    The larger the diameter of the cutter, the more it will magnify any out of plumb condition you have on your machine's Z axis. A 2" flat bottom cutter would be fine. Shopbot has a router bit starter...
  3. I think you'll find the assembly process easy,...

    I think you'll find the assembly process easy, especially if you have helpers. I assembled my 60x96x12 PRS Alpha by myself with a tiny bit of help from my then 5 year old daughter. That was back in...
  4. Replies
    23
    Views
    1,658

    >> I find it's the spoil-board that causes the...

    >> I find it's the spoil-board that causes the changes in height, as you pull through the board you introduce whatever humidity is in the air and that causes the fluctuations in thickness.

    That...
  5. Replies
    23
    Views
    1,658

    Have you checked 80/20's eBay store? They offer...

    Have you checked 80/20's eBay store? They offer odd sizes for about half price. The odd sizes can be over 8'. I've bought maybe a dozen of them over the years at that length. They're probably...
  6. Replies
    23
    Views
    1,658

    Question: Is your vacuum pump under your table?...

    Question: Is your vacuum pump under your table? If so, that could explain the changes you're seeing. Vacuum pumps throw off a lot of heat and if that heat is hitting the underside of your table,...
  7. Replies
    23
    Views
    1,658

    I did a job that required cutting thousands of...

    I did a job that required cutting thousands of plastic parts (acrylic) to very close tolerances. One thing I noticed is that the wear on the end mill was the biggest contributor of error in my...
  8. Replies
    23
    Views
    1,658

    The cheapest and most stable material would be...

    The cheapest and most stable material would be plate steel. Steel is literally an order of magnitude cheaper than aluminum. It's also stronger, stiffer, and has a lower coefficient of expansion. The...
  9. Thread: New Spindle

    by coryatjohn
    Replies
    7
    Views
    464

    >> After every cutting project I give my machine...

    >> After every cutting project I give my machine a good cleaning and tune up.
    The number one enemy of moving parts is contamination.
    The number one enemy of electronic parts is heat.

    Keep your...
  10. Replies
    3
    Views
    586

    Yes, the measurement from the center to the table...

    Yes, the measurement from the center to the table TIMES TWO. I apologize for my mistake.
  11. Replies
    3
    Views
    586

    I believe it's spec'd as a measurement between...

    I believe it's spec'd as a measurement between the center and the table. If you want more diameter, you'll have to jack up the indexer and tailstock as you've indicated.

    One thing that makes tiny...
  12. Replies
    18
    Views
    1,669

    Looks great! Hope it works.

    Looks great! Hope it works.
  13. Replies
    12
    Views
    1,152

    I gave up on the automatic zeroing years ago...

    I gave up on the automatic zeroing years ago after the second time I forgot to remove the clamp from the spindle. I switched to a much more intuitive method that uses a dial indicator.

    34106
    ...
  14. Wow! That's the way to move 'em on out. Free...

    Wow! That's the way to move 'em on out.

    Free shipping too.
  15. Thread: Spoil Board

    by coryatjohn
    Replies
    5
    Views
    531

    I can think of several negatives to using PVC as...

    I can think of several negatives to using PVC as a spoil board. The major one are the chips from PVC getting tossed around on every job. I take special precautions when cutting plastics to keep that...
  16. Replies
    4
    Views
    583

    That sandpaper is my absolute favorite for hand...

    That sandpaper is my absolute favorite for hand sanding. I cut a piece, fold it over and with a snap blade razor knife, trim the edges square. The thickness of the two sheets is just right to form a...
  17. Replies
    5
    Views
    870

    Year built? SB Software version?

    Year built? SB Software version?
  18. Replies
    3
    Views
    577

    After I put together my PRS Alpha 60x90x12, I...

    After I put together my PRS Alpha 60x90x12, I decided to move it across the room. A friend and I just dragged it carefully. It didn't need leveling or any changes since the floor was reasonably flat....
  19. Replies
    18
    Views
    1,669

    Looks nice! You can always sand it and add a few...

    Looks nice! You can always sand it and add a few layers of glass at a later time if you feel the need.
  20. Replies
    18
    Views
    1,669

    >> For applying the epoxy I like to use a bondo...

    >> For applying the epoxy I like to use a bondo spreader.

    Another useful tool... How would life continue without bondo spreaders? I use them primary for glue ups and thickened epoxy.
  21. Replies
    18
    Views
    1,669

    The amount of curvature a particular cloth can...

    The amount of curvature a particular cloth can handle depends on the weave. The typical plain weave, which is like regular cloth, can handle slight curvature and if it's a lightweight cloth, a decent...
  22. Replies
    18
    Views
    1,669

    I have absolutely loved working with the System...

    I have absolutely loved working with the System Three products. Their epoxy sets slowly and once it's hard to the touch, can be sanded. Waiting more than 36 hours to sand will make the job a lot more...
  23. Replies
    9
    Views
    815

    Oops, sorry Bill, didn't notice you already had...

    Oops, sorry Bill, didn't notice you already had joined the conversation.
  24. Replies
    9
    Views
    815

    >> My problem happened all within ten minutes. ...

    >> My problem happened all within ten minutes.

    I suspect you've had a hardware failure in the control box. You should probably contact Shopbot for debugging.
  25. Replies
    18
    Views
    1,669

    System Three epoxy. The best epoxy for such a...

    System Three epoxy. The best epoxy for such a task. Their products are a bit more expensive but they have such a higher quality compared to others that it's worth the extra. To do a really good job,...
Results 1 to 25 of 500
Page 1 of 20 1 2 3 4