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Messages - Graham Waterworth

1951
General Mach Discussion / Re: Mach for cnc saw?
« on: August 20, 2007, 02:25:14 PM »
Ask Poppabear, he was playing about with this at the workshop a few weeks ago.

Graham.

1952
General Mach Discussion / Re: g-code set up
« on: August 20, 2007, 02:22:17 PM »
Robert,

you can change the view by clicking the 'Display Mode' button, this will show you the position of the roadrunner within your soft limits, if you do a scale and then 'Regen Toolpath' the display will reflect the new sizes.

Graham.

1953
General Mach Discussion / Re: g-code set up
« on: August 20, 2007, 04:30:56 AM »
On the program run screen at the top centre are scaling dro's enter .5 or less in both X & Y and press enter, this will scale the roadrunner down to fit your machine.

Graham.

1954
Quote
How do "normal" people live without CNC?

From what I have seen, they watch football.

Graham.

1955
This is sounding more like pull down.

Is the tool fixed in the holder tight.

Is the Z axis moving down with vibration and cutter pull down. Fix a dial clock on the machine to monitor the Z movement.

Graham.
 

1956
Hi Chuck,

Mach has no editing feature built into it, it uses Notepad or Wordpad to do this.

Click the edit button in Mach and the NC code should be loaded into the external editor, edit the code and click Save and the code will go back into Mach.

Graham.

1957
G-Code, CAD, and CAM discussions / Re: Cutter Compensation code
« on: August 16, 2007, 03:21:30 AM »
Why not run sheetcam again and post the code out for a 3mm cutter?

Or try it like this :-

N0000 (Combined L & R Fig12 Targets with offset shift)
N0010 (Post processor: Mach2.post)
N0020 (Date: 20/04/2007)
N0030 G21 (Units: Metric)
N0040 G40 G90
N0050 G43 F1
N0060 (Part: ~$Fig12RHmod001)
N0070 (Process: Outside offset 0, Mill/Router, 5 mm diameter, 5 mm Deep)
N0090 M06 T1  (Mill/Router, 5 mm diameter)
N0120 M03 S500
N0125 G00 Z40
N0130 X-325.5000 Y225.
N0150 G00 Z0.0000
N0160 Z-15.0000
N0170 G01 G42 D2 Y231.
X122.0979 F1500 etc etc . . .

Graham.

1958
G-Code, CAD, and CAM discussions / Re: Stitching G-Code Together
« on: August 12, 2007, 05:57:45 PM »
There is no reason why you could not use Sub programs,  all your subs would be the programs you use now.  You would have a new main program that calls the subs in the right sequence.

Main (bridge type 1)

M98 P0002 (CALL SUB PROGRAM NUMBER 2)
M98 P0004
M98 P0019
M98 P0005
Etc.
M30

Graham.


1959
G-Code, CAD, and CAM discussions / Re: where to start
« on: August 12, 2007, 12:28:47 PM »
Buying or building a cutting tool is only the start of many years of spending sometimes substantial amount of cash.

From my experience the best way to learn anything is to have a project,  that way you can focus on getting one thing right at a time. Set yourself a task, maybe you are into clocks, loco's, boats, aircraft, what ever.  I think its time to decide what you are going to make on the machine, then gear yourself up to achieve this goal.

Think about it this way :-

What am I going to make?

What materials will I be cutting?

What tools will I need?

Do I need 2D, or 3D code generation?

How am I going to hold the work pieces?

Do I need special measuring tools?

Once you know the answers to these questions, the next list of questions will be automatic and a path will develop

At the end of the day the G-code part is the last bit you need to worry about, and we can help you with that bit too.

Graham.
 

1960
G-Code, CAD, and CAM discussions / Re: G code for a circle
« on: August 10, 2007, 12:45:22 PM »
Try this :-

G20 G40
G00 G90 X0 Y0 S1000 M3
Z.05 M8
G01 Z-.05 F2.
X.0935
G03 I-.0935
G01 X0
G01 Z-.1 F2.
X.0935
G03 I-.0935
G01 X0
G01 Z-.15 F2.
X.0935
G03 I-.0935
G01 X0
G01 Z-.2 F2.
X.0935
G03 I-.0935
G01 X0
G01 Z-.25 F2.
X.0935
G03 I-.0935
G01 X0
G01 Z-.3 F2.
X.0935
G03 I-.0935
G01 X0
G00Z1.
M30

Graham.