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19mm is 3/4", which used to be the standard thickness here in the US. Last couple years, most of the '3/4" MDF' I've found here is actually 18mm anyway.

Measure the mounting holes: for NEMA23, they should be 4mm holes on 47mm centers.
(AFAIK, "NEMA23" is strictly a mechanical standard and says nothing about the electrical or performance aspects of...

It shouldn't be any harder to hinge a moving gantry than a fixed one. Just split the sides into two overlapping pieces held together with a pivot point and a couple of removeable bolts.

Ok, here's one (and a good one at that) that uses a moving table
And here is a typical moving-gantry machine

Well, they're certainly round...:D

I'm not a stepper-motor expert and you probably already know more about them than I do.

Those pictures look like a fixed-gantry/moving-table design, which has a larger overall footprint than a moving-gantry design of the same working area.
Seems like that's the wrong path to take if...

atFrom the CNC end, the SmoothStepper looks just like a parallel port, so you shouldn't have any problems. (Well, no additional problems anyway: I'm under the impression you're short a good bit of...

The parallel-port setup seems to be the default mainstream solution for DIY machines. I went with the Smoothstepper for two main reasons:
(1) The parallel port driver that works with Mach3 is 32-bit...

Even a 25W laser would be faster than a CNC router. Not exactly DIY-friendly though.

Ah, got it. I've got a flat front plate at 36"-41", but mounting there puts it a bit too high if I'm sitting and a bit too low if I'm standing, which got me looking at arms with vertical motion.

Pretty much has to involve some kind of shaft...any reason he can't use the cheap/sloppy lazy-susan widget to support the axial load and a couple of standard ball bearings for the radial loads?

Looks good, but what do you bolt it to? I was envisioning something more like this, which I could attach to the side/end of the table, but it's like 10X the price.

EDIT: found this one, which is...

My favorite is the drill-press laser guide I adapted (last post in this thread: http://www.cnczone.com/forums/diy-cnc_router_table_machines/158002-yet_another_mdf_machine.html), very handy for quick...

This is a four-year-old thread. Since we haven't heard back from the original poster, I'll assume he gave up the whole thing as a really bad idea.
At least, as the owner of a ULS laser, I sincerely...

Had to appear to the OS (and/or Mach) as a keystroke or mouse event. From your description, it wouldn't surprise me if the cursor was still over the 'Cycle Start' button after the job ended.

What tends to get lost in the noise is that, at the DIY level, this is very much a cottage industry. The quality of the product line doesn't necessarily carry through to the level of service and...

That brings up a couple of "big picture" questions that may affect the strategy:

1. How original does the design have to be? I'm thinking that working from commercial (or even free open-source)...

Turning off automatic install is persistent, at least in Windows7. And a manual install will not auto-reboot, just nag incessantly.

Auto-check/download may behave as you describe, but they are...

Another thing that can greatly affect the cost and schedule is what you have available in the way of tools, i.e. whether you can do all of your fabrication in-house (so to speak) or have to outsource...

You've got it already: "M/C" = "McMaster-Carr". :cool:

It can't possibly be as bad as turning wet zebrawood...:eek:

While I agree the price is breathtaking (the size I need is $224), those are open bearings, for use where you can easily relube them. It also says those are rated only up to 140F, which really...

I went through roughly the same thing with my P/C 892, although it has a larger bearing. Unless my google-fu is even weaker than I thought, bottom line is, all of the metal bearings in this general...

+1.

Just because there is an expensive high-tech tool available doesn't mean it's the best tool for the job.

The only thing I can think of that is consistent with the symptoms is that one or more of the direction lines is intermittent. It will look random, but it probably isn't, in the sense that, if you...

I know what you mean, but if realistic feel is the goal, maybe foam isn't the right answer. I took the question to apply more to checking the critical dimensional relationships: neck pocket shape,...

Why bother thinning it down? Reference everything from the top surface...it's not like you need to cut all the way through.

Maybe the Mach3 documentation is their role model...

There is a field on the SS plugin config screen, lower-left, labeled: "Number of data points Mach should pre-calculate". Default is 1023 (which certainly sounds like enough to cover this problem),...

When you say "curve", is the gcode actually using a G2/G3 arc or is it some kind of short-segment polyline?
ISTR that there's some sort of look-ahead buffer setting that may be too low...