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Type: Posts; User: lgalla

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  1. Re: Epoxy-Granite machine bases (was Polymer concrete frame?)

    Speakin of old faces,I lurk around a bit
    Larry,,,The epoxy surface plate is flat
  2. Re: Epoxy-Granite machine bases (was Polymer concrete frame?)

    also polyurethane is moisture sensitive.Will bubble
  3. Products | Entropy Resins...

    Products | Entropy Resins
    have not used it
  4. In a vacuum bag the pressure is equal all round...

    In a vacuum bag the pressure is equal all round and the mold will not collapse.
    Larry
  5. Thread: DMM Tec Servos

    by lgalla
    Replies
    421
    Views
    57,328

    I have always liked the fact HUI LI of DMM does...

    I have always liked the fact HUI LI of DMM does not directly post.His promotion is happy customers on the thread.Contact him and he will go out of his way to give some real honest advice.If needed by...
  6. Thread: DMM Tec Servos

    by lgalla
    Replies
    421
    Views
    57,328

    Boring

    Quote from azam...Are there any vendors specializing on couplers .... DMM motors are not that special and there should be something off the shelf.

    I agree with azam.Boring is ,well boring.So is...
  7. Thread: DMM Tec Servos

    by lgalla
    Replies
    421
    Views
    57,328

    I would assume Mac is giving rounded off numbers...

    I would assume Mac is giving rounded off numbers or conservative ratings untill the drive is in his hands.It would be interesting if Hui sent AL a drive and motor for evaluation.
    Larry
  8. Thread: DMM Tec Servos

    by lgalla
    Replies
    421
    Views
    57,328

    The new drive appears to be rated for 120/volt...

    The new drive appears to be rated for 120/volt single phase,220/volt single phase,and 220/volt 3 phase.My shop[ has 600volt 3 phase and transformers step down to 220/v single phase and...
  9. Thread: DMM Tec Servos

    by lgalla
    Replies
    421
    Views
    57,328

    Al,I actually saw a photo of their drives and it...

    Al,I actually saw a photo of their drives and it says made in Canada on the label.
    With the low prices of their motors I would not be surprised if they are sourced in China. I would not be afraid to...
  10. Thread: DMM Tec Servos

    by lgalla
    Replies
    421
    Views
    57,328

    Mactec what is the output voltage on the new...

    Mactec what is the output voltage on the new drive used with the 750W motor?
    At that voltage what would the rpm be.
    Are these drives made in Canada?
    What is the input voltage?
    I assume there is...
  11. Thread: DMM Tec Servos

    by lgalla
    Replies
    421
    Views
    57,328

    Al_the_man,What is your opinion on a servo system...

    Al_the_man,What is your opinion on a servo system with DMM servos,the new 110/220 3 phase drives and KFlop and or Kanalog.It appears to be an inexpencive way to close the loop and operate at higher...
  12. Thread: DMM Tec Servos

    by lgalla
    Replies
    421
    Views
    57,328

    Why does pole count matter? Mactec,you could PM...

    Why does pole count matter?
    Mactec,you could PM & PDF me the drive please
    Larry
  13. Thread: DMM Tec Servos

    by lgalla
    Replies
    421
    Views
    57,328

    I like this thread as I know absolutely nothing...

    I like this thread as I know absolutely nothing about motors and am learning.
    I like the fact a servo motor has the same torque regardless of voltage.Higher voltage just increases rpm.I think DMM...
  14. Replies
    650
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    14,635

    Why would a company accept an order and payment...

    Why would a company accept an order and payment in advance for a machine they have not built or designed.
  15. Replies
    650
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    14,635

    Ron the guy has been waiting over a year after...

    Ron the guy has been waiting over a year after paying in advance.I agree George should give a refund
    Larry
  16. Thread: UPS for CNC

    by lgalla
    Replies
    16
    Views
    667

    Andy are you thinking of a UPS for the whole...

    Andy are you thinking of a UPS for the whole machine?
    The Z axis may drop with power off if you have a ballscrew as the weight of the spindle will allow it to drop without a brake.
    On a brown or...
  17. Replies
    19
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    3,677

    petextr Nema 34,1805 steppers are a bad...

    petextr Nema 34,1805 steppers are a bad choice.They are too big.Large steppers are poor performers at RPM.A smaller servo would run circles around that stepper.Sorry I am not a very high tec guy but...
  18. Thread: Started!

    by lgalla
    Replies
    160
    Views
    5,749

    woops

    woops
  19. Thread: Started!

    by lgalla
    Replies
    160
    Views
    5,749

    480lbs seems very heavy for the Y.A steel tube...

    480lbs seems very heavy for the Y.A steel tube 4"X8"X3/8" X60 long is 130lbs.I can't see the motors,rails etc adding up to 350lbs.I guess the end plate uprights are where all the weight is.What size...
  20. Replies
    4
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    445

    1605 is too small for 106".1" would be marginal....

    1605 is too small for 106".1" would be marginal.
    Here is a link for non precision ball screws.Mucho denero
    Larry
    Ballscrews and Ballnuts - General Information - Roton Products...
  21. Thread: Welded 4 x 10

    by lgalla
    Replies
    7
    Views
    444

    http://www.cnczone.com/forums/cnc_wood_router_proj...

    http://www.cnczone.com/forums/cnc_wood_router_project_log/134962-canucks_hd_metal_monster.html
    This member used epoxy to level the tubes
    Test Bed
    Larry
  22. Replies
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    Views
    980

    Hay Jerry here is some links to 600 CPS epoxy.CPS...

    Hay Jerry here is some links to 600 CPS epoxy.CPS is the viscosity which is very thin in this case
    Larry
    Laminating Epoxy System - Fast (5 Gallon, 2 1/2 Gallon Hardener) - $275.00
    Epoxy :*Epoxy...
  23. Replies
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    2,169

    I have added carbon black to E/G from Cabot corp....

    I have added carbon black to E/G from Cabot corp.
    Would not recommend using toner,It is not a reinforcement.Graphite is very soft.
    Cabot has reps in Sweden.They sell by the truck load but in Canada...
  24. Al just in case you are interested here is that...

    Al just in case you are interested here is that mill I was talking about
    Toshiba Machine Company Canada Ltd.- TUE Series
  25. overkill

    Al here is an example of overkill...One of the zone members did beam deflection calcs for me with Beam boy.Picture a 4"x12" 1/4" beam,gantry 100lbs centre load
    The deflection was .0001.If a fly...
  26. Replies
    650
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    14,635

    Azam, sorry I can not advise on the thickness.Not...

    Azam, sorry I can not advise on the thickness.Not being familiar with 80/20 a drawing would be nice.Perhaps don't rush and order in advance.Wait till you receive all your parts from George and...
  27. Replies
    650
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    14,635

    This company has 3"X3" 1/4" 300" stock cut to...

    This company has 3"X3" 1/4" 300" stock cut to size
    ASTM B221-08 6061-T6 Aluminum Equal Leg Structural Angle | Buy Online | Cut to Size | No Minimum Order
  28. Al there is no such word as "overkill"when...

    Al there is no such word as "overkill"when designing a CNC machine.
    Larry:D
  29. TAMO METEP XENO please excuse my Serbian,I do...

    TAMO METEP XENO
    please excuse my Serbian,I do not speak the language.To make new members feel at home I just look up a few words.
    E/G is not new to me after 25 years of use.It was used to backup...
  30. Peter CPS is viskoznost.The glass fiber would...

    Peter CPS is viskoznost.The glass fiber would also cause very high viscosity
    I am no machinist but if I built a machine I would build a steel structure and fill in the tubes and spaces with E/G.The...
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