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  1. Replies
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    36,119

    Or perhaps a 0V to 5V square wave at a suitable...

    Or perhaps a 0V to 5V square wave at a suitable frequency related to the desired spindle speed. 500Hz for starters? Try using the step and direction signals from one of the axis drives into this...
  2. It may be you are over-analysing the situation. ...

    It may be you are over-analysing the situation. Unless this is some hyper-critical precision tolerance installation, with a precision-ground-finshed 25mm shaft and your bearings and taper-lock all...
  3. I'm confused with your question - the bearings...

    I'm confused with your question - the bearings are a slight interference fit, but the taperlock bush shouldn't be, so why the need to heat it?
  4. Replies
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    36,119

    I agree - the proximity switches might as well be...

    I agree - the proximity switches might as well be removed. But the end-of-travel limit switches can be retained and used for homing in Mach3. I tried to also set them as limits in Mach3, but...
  5. Replies
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    349

    I have an MPG wired as desribed already in this...

    I have an MPG wired as desribed already in this thread - then a rotary two-channel switch that controls the axis being jogged. So the MPG uses two inputs for its A and B, and the rotary switch uses...
  6. Replies
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    637

    Beware that you might get distortion as you...

    Beware that you might get distortion as you reduce the thickness of your block. I've done some preliminary machining on a bit of 6" x 1.25" x 0.375" stainless 303 bar (I've got 4 foot of it to get...
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    Perhaps you could post your file. I've always...

    Perhaps you could post your file. I've always managed to get things joined up, even if I have to use huge join tolerances.
  8. Replies
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    489

    Would a three-position rotary switch with...

    Would a three-position rotary switch with fixed-value resistors be better? Easier to use, repeatable results every time.
  9. Replies
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    1,120

    Here's more details of the older Feeler stuff: ...

    Here's more details of the older Feeler stuff:

    Page Title
  10. Replies
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    If the motor is 2hp at 60Hz and you can get the...

    If the motor is 2hp at 60Hz and you can get the same torque at 6Hz, then you only have 0.2hp at the lower speed. You could look up in a feed and speed program to see if this power is suitable for...
  11. Thread: Metric to Inch

    by UUU
    Replies
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    797

    It's not too bad if you're working in Decimal...

    It's not too bad if you're working in Decimal inches.

    I tend to think 0.004" = 0.1mm and 0.01mm = "half a thou", but I'm not working to finer tolerances.

    But you can get brain ache with...
  12. Replies
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    I've had a browse about on my PC and have found...

    I've had a browse about on my PC and have found relevant looking files in the C:\Program Data\CamBam plus 0.9.8\ folders there are subfolders under here that seem to contain the sytle definitions,...
  13. Replies
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    420

    I tried engraving some text from CamBam for the...

    I tried engraving some text from CamBam for the first time today. Most of the curves were rendered as a series of short arcs. A sucessful oucome.
  14. On the spindle setup tab, in Ports and Pins, you...

    On the spindle setup tab, in Ports and Pins, you could enable the Flood coolant relay - and set that to one of the output#. then on the Output signals tab, set which pin you want that output to go...
  15. Replies
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    312

    I also draw in millimetres, and my Mach3 is...

    I also draw in millimetres, and my Mach3 is always set up to work in these units. But CamBam has no difficulty with inch-sized tools. And the resulting toolpaths are perfectly adjusted to...
  16. Replies
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    420

    I visited a shop last night where their Taig had...

    I visited a shop last night where their Taig had just finished making some small oval brass plates - table numbers for a restaurant. So I had a look at the G-code to see how long the straight...
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    549

    You must understand that excel can display a...

    You must understand that excel can display a number differently form the underlying absolute value. You can round the underlying value to a specified number of decimal places by encasing your...
  18. Replies
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    Here's a very simple conversion of a lathe in...

    Here's a very simple conversion of a lathe in pictures:

    Tony Jeffree's Model Engineering Pages

    See here, some videos of a similar lathe, but with a more comprehensive conversion.
    ...
  19. Replies
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    A block of bronze that size is not for a builder...

    A block of bronze that size is not for a builder on a tight budget.

    I can't say I like the look, either. You could gold-plate the wheels and fit big jewels on the handllebar ends.
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    I would be expecting this to be a function of the...

    I would be expecting this to be a function of the CAM process, converting the drawn curve into machine movements, rather than a function of the machine itself.

    I've seen G-code that is a series of...
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    508

    Have you got your gantry moved by one motor, or...

    Have you got your gantry moved by one motor, or two?
  22. Gallery - NAKAYA FOUNTAIN PEN - Japanese handmade...

    Gallery - NAKAYA FOUNTAIN PEN - Japanese handmade fountain pens
  23. Replies
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    Yes you can transfer elements, but you can move...

    Yes you can transfer elements, but you can move all the items in one go: select all the layers (click on the first one, hold shift, then click on the last) then click the "select all" button to...
  24. Replies
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    36,119

    I use the roller switches in series for homing...

    I use the roller switches in series for homing (so Mach3 homes each axis in turn) and then rely on the "soft limits" system to keep me from hitting the ends.

    I've not tested the repeatability of...
  25. Replies
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    The book says nothing about shielding the power...

    The book says nothing about shielding the power cables.

    But it does caution against running any signal cables parallel to the power ones, or bundling them together. It suggests sheilding any...
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