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Type: Posts; User: davida1234

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  1. Replies
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    Re: Uneven bed surfacing? cnc router

    I agree with Vlod.

    If the bed is held in place with just four clamps at each corner and has only three cross braces underneath for support, all kinds of sags and distortions of the bed should be...
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    David A's X/Z Axis

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    I had documented my desktop machine build (David A's Benchtop CNC Version 2) about two years ago which has been running well so far.

    Images below show the latest iteration of my X/Z...
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    Re: ball screw help/suggestions

    What Ger21 is saying is that the direct drive needs to spin the screw at 3000 rpm vs just 1000 rpm for reduction.

    How is the direct drive screw rpm lower than the reduction rpm?
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    Re: Z axis spindle too heavy for Nema 23

    Either do as Mactec suggests with the belt reduction or replace the screws/nuts with a slower one, particularly on the Z-axis, which will probably be easier.
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    Re: Need HELP with Design and Parts

    Paul,
    The 0.005" was with a MDF machine which is known to not be very rigid. I am sure you will be far better off with your new design, particularly with all the new hardware available to builders...
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    Re: Need HELP with Design and Parts

    Cutting aluminum......... That's a wide ranging call-out.

    Do you want to have 0.005" depth of cut which makes every aluminum part at least a 3-hour undertaking or do you want to be able to have...
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    Re: Designing a new router called Brevis-HD

    Be careful, Peter. The record might not play properly anymore.
  8. Replies
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    Re: My CNC Router Build Adventure

    Hi Mactec54 - Going off this comment of yours, I went to McMaster's site and all of their struts have a limit of 6 cycles per minute. Would you know if those people are using gas struts on slower...
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    Re: My CNC Router Build Adventure

    As a (usually) permanent solution. You will probably damage the aluminum pulley should you ever try to pull the pulley off the shaft.
  10. Replies
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    Re: My CNC Router Build Adventure

    Interesting thought....
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    61,770

    Re: My CNC Router Build Adventure

    Once you get to that point, I could order for you whatever you need and send the package to you. I am in California and have no idea if that could save you some money. I could use the carrier...
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    Re: Designing a new router called Brevis-HD

    Thanks, Peter .......... was meant to be a tongue in cheek comment.
  13. Re: Gradually losing z-position during 3D relief carving

    Do you use any weight compensation for the z-axis like springs or gas struts?
  14. Replies
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    Re: Designing a new router called Brevis-HD

    Man, Brevis, Brevis-HD, YaG, Scoot, Brevis#1, Scoot S2, Scoot/Yag, Scoot S1........... quite some lyrics here :confused:
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    Re: My CNC Router Build Adventure

    That looks like total overkill. SDP/SI has single piece clamp collar pulleys which work very well, do not damage the shaft and cost only a little more than set screw pulleys. I have them on all of my...
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    Re: Designing a new router called Brevis-HD

    I never liked auto gantry squaring because you home first and then you force the gantry to go back on only one side for the auto square function. Distortion of the gantry, however small; uneven load...
  17. Replies
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    Re: My CNC Router Build Adventure

    Hi Jayne, as Peter explained with threading the stepper holes.
  18. Replies
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    Re: My CNC Router Build Adventure

    Hi Jayne,

    In the inboard case, make sure they are either attached to a thick plate and/or you have a fan inside the profile for heat management as they get quite hot. You also should think about...
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    Re: My CNC Router Build Adventure

    I did a bit of research about gas struts when I was designing my machine (David A's Desktop Version 2).

    According to major US gas strut manufacturers, a gas strut is a high friction device and is...
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    Re: David A's Benchtop CNC Version 2

    Hi guys,

    I will be out of the country for business for a while and won't be able to work on the machine during that time.
    I will be following CNC Zone on the computer, though.

    David
  21. Replies
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    Re: David A's Benchtop CNC Version 2

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    bryggacnc website has been updated with the vacuum holding set page.
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    Re: David A's Benchtop CNC Version 2

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    VACUUM HOLDING SET INSTALLATION:
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    Machine bed already contains all the channels and holes for
    vacuum holding so just a manifold needs to be installed:
  23. Replies
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    Re: David A's Benchtop CNC Version 2

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    Bryggacnc website has been updated with the cutting fluid set page.
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    Re: David A's Benchtop CNC Version 2

    Hey Peter,

    No anodizing at all due to cost.

    Most parts are tumbled, large 1/8" pieces like the rear cross brace are sanded to break the edges.
    The parts have been cut intermittently over two...
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    Re: David A's Benchtop CNC Version 2

    Overall arrangement on the spindle side:

    466958
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    Re: David A's Benchtop CNC Version 2

    There is a channel in the front cable management:

    466950

    Push the hose through the channel and into the drag chain:

    466952

    Cutting fluid hose installed:
  27. Replies
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    Re: David A's Benchtop CNC Version 2

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    Finishing up the outlet side of the cutting coolant set:
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    Insert the 1/4" hose into the base of the Loc-Line spout:

    466936
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    Re: David A's Benchtop CNC Version 2

    Install the drawer slide/bracket assemblies to the pivot nubs:

    466900

    Pull the slides all the way out:

    466902

    The flanges of the cutting fluid basin have pockets for the sliders on the...
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    Re: David A's Benchtop CNC Version 2

    Installation of cutting coolant set is easier if the front of the
    machine is lifted a bit for access. I use a car jack to do that:

    466886

    There are two pairs of 80/20 pivot nubs on either ...
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    Re: David A's Benchtop CNC Version 2

    Hmm, could someone please remove the above post?

    Thank you...
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