Messages

1

General Mach Discussion / Re: problems with machining holes and Z axis

« on: October 11, 2017, 03:53:00 PM »

Hi,

There seems to be an issue, albeit minor, on all axis.

Minor? This just about buggers the machine
to do anything.

Craig

I was playing it down

2

General Mach Discussion / Re: problems with machining holes and Z axis

« on: October 11, 2017, 11:37:00 AM »

Yes. There seems to be an issue, albeit minor, on all axis.
If you do a circle within a circle, and wanted a 6mm ring left, one side is 6mm and the other side 3mm.

3

General Mach Discussion / Re: problems with machining holes and Z axis

« on: October 10, 2017, 07:47:14 AM »

I bought the set second hand  from a chap who couldn't get it set up.
If it is a hacked copy, I have bought the set in good faith never hearing of mach3 until i turned the computer on.

4

General Mach Discussion / Re: problems with machining holes and Z axis

« on: October 10, 2017, 05:11:49 AM »

Try that one.

5

General Mach Discussion / Re: problems with machining holes and Z axis

« on: October 10, 2017, 05:11:08 AM »

https://rover.ebay.com/rover/0/0/0?mpre=https%3A%2F%2Fwww.ebay.co.uk%2Fulk%2Fitm%2F282545167242

6

General Mach Discussion / Re: problems with machining holes and Z axis

« on: October 09, 2017, 04:55:36 PM »

Sorry Craig. I don't know the answer to that.
282545167242 eBay number for my exact machine.

I desperately want to upgrade the crap dremel type head for a spindle motor. But it does for learning at the moment.

7

General Mach Discussion / Re: problems with machining holes and Z axis

« on: October 09, 2017, 02:30:04 PM »

i feel i'm getting somewhere with it 

i have velocity set to 1999.8 and acceleratrion at 300. do you have a suggestion what to change each one too?

looking at the work piece, the off centring is caused by the x and y moving slightly between each plunge.

the south of the piece is flat and the north side stepped like the pyramids, which would make sense as the south steps would be cleaned off with each plunge.

8

General Mach Discussion / Re: problems with machining holes and Z axis

« on: October 09, 2017, 02:02:39 PM »

I have to say though, apart from the minor niggles i'm having, i am really liking the cnc, sheetcam and mach3.
if as complete novice like me can get somewhere with it all, anyone can....obviously with a little guidance 

9

General Mach Discussion / Re: problems with machining holes and Z axis

« on: October 09, 2017, 02:00:02 PM »

Good evening Craig,
I did your test and all was moving as it should.
What I have noticed that if i mess with the motor tuning, it starts to work something like it should???
I did a few air tests and all seems well....ish
So i thought I'd do a cut piece in MDF. The holes are still off centre, and after finishing the job, i clicked got to z, the DRO is reading zero, but the mill piece was 5mm north east of where it started from
I did the tests on the x and y axis and all is perfect with vernier gauges

10

General Mach Discussion / Re: problems with machining holes and Z axis

« on: October 08, 2017, 05:13:30 PM »

Thank you Craig.
I'll get on it tomorrow after work and let you know.
Thank you for your help.