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I recently upgraded my plasma cutter, which has a machine torch option, and started thinking about a CNC table, but not sure where to start. I did try contacting a local CNC kit supplier, but never...

I'm not too sure about that. A bit of Googling suggests a pole spacing of 1 or 2mm in the tape is not uncommon. The raw signals from the read head are sine and cosine, making me think the head can...

Yep, I think the relatively low price for this head is because it has no signal conditioning in it, and can only be used with a proprietary display.

That said, I ran the A and A' and B and B'...

The cable actually has 8 wires, the grey and pink wires, which I assume are Z and Z', are there, but not connected to the 6-pin plug. I'm guess because the DRO unit doesn't use them.

I just wandered down to the shed. First, pulling the "A" signal up to VCC with a 3K3 resistor just changed its steady-state voltage from 2.5V to 3.2V. The amplitude of the signal when the read head...

Unfortunately, for all my Googling, I can't find any kind of datasheet for this sensor. I'm guessing it's a re-badged Chinese "SPM" sensor. I purchased it here:...

Heh. I've just purchased an Optimum DRO5-RH read head in the hope of using it with a TouchDRO setup. I cut off the connector, and the wire colours match up with what's printed on this sensor (which...

As has been mentioned, the rule for VFD motor cables is that the shield is grounded at both ends, this applies regardless whether it's a spindle or a pump or any other motor application.

Cables...

Can't you just shim the bottom of the side plates until the rods are square to the table?

My 2HP dust collector has a 6" inlet. And a bloody great steel impeller that scares me a bit.

I think vacuums have more suck, and use thinner pipe, whereas dust collectors are all about moving...

I've got to say, apart from not being very portable, my Miele vac plus dust separator works really well for my CNC setup. It's pretty much this:

J. Phil Thien's Cyclone Separator Lid w/ the Thien...

The dust collector nerds get all angry if you reduce the 6" inlet too soon, hence the "ideal" of running 6" about the workshop.

I don't think a quiet shop vac exists. Maybe those Festool boxes are? I dunno.

I bought a genuine Shop-Vac from Masters a few weeks back for cleaning up the workshop. It's noisy.

For my 6040 I...

I don't know about that - I had a guy bang out some one-off stuff from a 4 x 8 foot sheet on a Multicam - I gave him all the parts in a DXF, he spent about 5 minutes arranging them on the sheet and...

Actually you don't. This machine works just fine as delivered without fiddling with a single cable.

With respect to shielded cables on these machines, it's also probably worth understanding why....

Yes you can. All of the grounding/shielding stuff derives from other machines (particularly the blue box ones) that exhibited all manner of problems until grounding and shielding was sorted out. Some...

From the sound of it, it's likely some kind of physical issue (broken wire or dodgy connection). Normally power supplies just blow up and stay that way, unless there's a heat issue where a regulator...

That's an improvement. You've got a 3020 machine with a DC spindle with manual activation and speed control. A photo showing how the wiring goes from the power supply board to the front panel would...

Without knowing exactly what machine you have, nor with any photos to go off, how can anyone possibly help?

The darlington driver chip will handle up to 50V, so 24V would be fine. With all 7 pairs being driven, the current rating drops, although it looks like 6 of the 7 are connected in parallel, doubling...

Yup - this machine is a CNC router, ideal for wood, plastic and aluminium using light cuts. Mild steel or stainless requires a *much* heavier, *much* more rigid machine with far more torque, i.e. a...

A bit of an odd statement. The Netherlands' power system (at least the LV distribution) is much more similar to Australia's than to the US's. If you read my post carefully, I explained the...

Well, no, there is more of a difference than frequency, and looking at that video of yours, the kid shows the wiring options for the drives he flogs, and I noticed they have an "N" connection, which...

Well admittedly, what I know about VFDs didn't come from Youtube videos starring some teenager.

The mains wiring "polarity" on the input to these (and most) VFDs is arbitrary. The terminals would normally be labelled RST for 3 phase. When using single phase, you use any two of the inputs,...

The *only* earth mods I've done with mine was to put a star washer under one side of the EMI filter to ensure good conduction to the casing, and run a wire from that screw to the earth terminal of...

From memory (I'm away from my machine at the moment) the Carving CNC spindle cable is only 3 core and no shield. While this is far from ideal, it does work out of the box - I've been meaning to...

You certainly can. On mine I found the PS casing was earthed through its mechanical connection to the main case.

That looks tickety boo. On mine I used one of the mounting screws for the EMI filter as its can's connected to earth. This here is a typical config for a chassis earth connection...

Firstly, while the Carving CNC setup *should* be earthed properly, it does work out of the box without extra earthing.

While earth loops are most commonly associated with audio (where they create...