Search:

I'm pretty sure I have the motor phases wired correctly as I maticulously followed the Bi-polar Parallel diagram on the motor datasheet but I will double check.

If it turns out to be a noise issue...

hemsworthlad,

That’s a lot of information you’ve requested but I’ll attempt to answer as much as I can.

The problem has persisted since day 1.

I’ve always used it for pretty intensive 3D...

I will try your suggestion and maybe rig up a torque wrench to get a more accurate result.

Am I right in saying that the holding torque, in this case 1Nm, is the highest torque produced by the...

All my motors are the same.

The amount it is out has probably changed as I reduced the acceleration but I have no accurate way of determining this.

I've tried it with no load and get the same...

OK I halved the acceleration from 50 to 25 and it made no difference. I tried 15 and still no difference so I dropped it as low as it'd go which was 4. Although this did seem to work it was painfully...

Thanks Mikael I'll check the acceleration settings in Mach 3 but mine is a lot more severe than yours so I would be surprised if it was that.

I don't think the bit is slipping but will check that...

Hi all,

I have a recurring problem with my Z axis that I am beginning to think may be as a result of insufficient holding torque from the motor.

The problem is that during the cut the Z axis...

brtech, I've watched the mach tutorials and your suggestion to use a "touch off plate" was part of my original question.

I still don't quite see the advantage of referencing from the top of the...

The reason I use the table as Z position 0 is because I'm cutting two halves of a scale helicopter mould out of 75mm thick foam insulation. I use the factory formed flat surface of the insulation to...

Surely the easiest way to do an E stop is to plug the router and power supply to the controller to a common switched supply. Then you just hit the switch and cut all power in an emergency.

Basically, I want to set the X-- and Y-- limits as 0, 0 (home) and the table top as 0 for Z--

I can then use offsets as needed.

Can I use a separate input for the Z axis homing?

Fastest1

What I meant was to have a home switch at the X-- and Y-- end that also acts as a limit switch if needed wired in series with limit switches at the X++, Y++ and Z++ end.

I wanted to...

Hi all,

I am about to wire in my limit/home switches but I'm not sure if what I am proposing will work.

My BOB has 4 inputs so I was planning to use one as an E Stop, one for X Y & Z limits...

Thanks guys, I thought as much but just wanted to check before damaging a motor!!

Hi,

Because of excessive flex between the two X axis gantry sides I'v decided that installing a motor on the other side is the only way to overcome the problem.

The trouble is that the second...

Hi all,

I'm nearly done building my second cnc router.

I was demonstrating it to my dad at the weekend and like a complete idiot I had the driver electronics rested on my aluminium guide rails....

I have two 10mm holes for the bearings on one side and two 10mm elongated holes the other side so that I can slide the bearings and tighten them on to the rails. I did this by hand so it's probably...

I'm not sure what those bushings are going to acheive. The ID of my bearings are 10mm and I have them fixed to M10 bolts with an M10 nut either side. This makes the inner part extremely firm. It's...

Hi

I've nearly finished my build but I'm getting quite a lot of play/slop in my V groove bearings.

If I hold the inner part of the bearing firmly, I can rock the outer (V groove) part from side...

Please help,

I've just finished building my first cnc machine and I'm testing the motors before I attach them.

Using Mach3 motor tuning, I can't get them to turn above 135 mm per min without...

Hi,

Just wondering if there is a difference between an end mill and a straight bit and if so what?

Can they both be used for "roughing"?

Thanks in advance.