Messages

351

General Mach Discussion / Re: Scaling Mach3 imported dxf files

« on: April 29, 2017, 03:54:51 AM »

You may need to calibrate your axis motors.
Read Mach3 doco for that.

Cheers
Roger

352

General Mach Discussion / Re: Mach3 Mill with Windows 8.1 Pro install problem

« on: April 29, 2017, 03:52:39 AM »

Get W7 up and running.
Install Mach3 .062 - NOT .066.
Run machine.

Cheers
Roger

353

General Mach Discussion / Re: zero mach

« on: April 29, 2017, 03:50:31 AM »

'Coordinate Spaces' in Members Docs.

Cheers
Roger

354

General Mach Discussion / Re: Mach 3 Screen tabs

« on: April 29, 2017, 03:49:09 AM »

So when you remove the XBox everything works?

Cheers
Roger

355

General Mach Discussion / Re: Self Changing Velocity

« on: April 29, 2017, 03:46:40 AM »

You might profitably consider changing the servicing company as well.

Cheers
Roger

356

General Mach Discussion / Re: Need Help!!

« on: April 29, 2017, 03:37:21 AM »

Not very different, really:
Windows 7 (because it works fine and is easier to come by)
Mach3 V.062 (and NOT the latest V.066!)
Warp9 ESS (definitely)
Homann Designs MB-02 break out boards (2 off)

Now motors ... I think steppers will have enough grunt to drive a machine of that size. You would probably need the largish size of stepper, and a 3:1 toothed belt reduction using GT2 belts ( I suggest 9 mm wide) is always good.

Alternately, DC servo motors with 512 line encoders and Gecko G320 drives and a 3:1 GT2 belt reduction WILL work fine - I use them myself.

Putting all this together from scratch ... hum ...
Can I suggest you ask Peter Homann at Homann Designs (Vic) for help. He can sell you almost all the bits you will need, and he offers very good local support.

Cheers
Roger

357

Machscreen Screen Designer / Re: MachScreen releases

« on: April 23, 2017, 05:48:30 PM »

Thank you
Cheers
Roger

358

Show"N"Tell ( What you have made with your CNC machine.) / Re: TOOL SHARPENING

« on: April 20, 2017, 07:51:09 AM »

Hi Rich

Your PDF mentions  that you should use diamond on carbide but CBN on cobalt. I feel this may be incorrect.

Use diamond on carbide for sure. It goes really well. I typically use resin-bonded diamond wheels.
You can use diamond on cobalt - in fact many bits of carbide contain cobalt as the matrix. There is no real restriction here.
CBN is used for steel (HSS) as the carbon in the steel can interact with the carbon in the diamond and erode the diiamonds away. Well - if it gets hot enough. For casual touch-ups at cool temps you can use diamond on HSS, and I do so sometimes.

I have just spent the morning regrinding a number of carbide and HSS end mills which I had damaged. One end mill had seriously damaged corners, so rather than take several mm off the end I turned the square-ended cutter into a rounded corner cutter. That went quite well, and the rounded corners are a lot more rugged.

Cheers
Roger

359

General Mach Discussion / Re: MACH3 under windowxp

« on: April 03, 2017, 04:22:42 AM »

Dunno, but try deleting the XML file and moving an older one from the backup directory into the Mach folder.

Cheers
Roger

360

General Mach Discussion / Re: Inaccurate spindle speed reading

« on: April 03, 2017, 04:12:40 AM »

RPM going erratic at high speed usually means that the Index pulse coming into whatever hardware you are using (even if it is just LPT) is inadequate. You can get this from a slow sensor, too much HW filtering, or too much SW filtering. Yes, been there.

Cheers
Roger