[jyotti]

G-Code Plus .. (Graham Waterworth) .. Metric to Imperial Converter .. was apparently compatible with XP/sp2. Is there an updated version floating around for W7/64 .. I hope. Getting errors about missing or unregistered files .. comdlg32.ocx. Perhaps an alternative program that is non-subscription. TIA .. Cheers!

[scorch]

I tried the version in this post: G-Code scaling program, mm to Inches and back it worked for me under Windows 7

If that file does not work you might want to register over there and ask Graham in the same thread. (looks like he is still very active there)

(If all else fails you can try G-Code Ripper: Open the g-code file and click on "Save G-Code Base". You will need to make sure that the "Plunge Feed" and "Z safe" are set to reasonable values but they will be used sparingly if you are only resizing. The default for G-Code ripper is to save in inches to go back to mm you would need to change the "Units" setting in the "General Settings Window".)

Scorch

[jyotti]

I tried the version in this post: G-Code scaling program, mm to Inches and back it worked for me under Windows 7

If that file does not work you might want to register over there and ask Graham in the same thread. (looks like he is still very active there)

(If all else fails you can try G-Code Ripper: Open the g-code file and click on "Save G-Code Base". You will need to make sure that the "Plunge Feed" and "Z safe" are set to reasonable values but they will be used sparingly if you are only resizing. The default for G-Code ripper is to save in inches to go back to mm you would need to change the "Units" setting in the "General Settings Window".)

Scorch

Thanks for responding, and sharing your programming efforts Scortch. That 32 bit OCX is not native to W7/64 Home Premium OEM apparently. Your program .. I did find that files with Nxxx numbering are not supported .. doesn't like the "N" G-codes I used both 3.937% and 3.93% as scaling conversion factors, and that worked flawlessly .. the latter hoping to eliminate the 0.0001's (tenths) digit. While indeed Mach3 shows "tenths" on the DRO's, as a practical matter those resolutions are not achievable on a router methinks. No harm done .. just perhaps unnecessary overhead for the DSP on the USB breakout, and perhaps Mach3 as well.

Feeds .. could be a problem though ;-) The mm/minute Feeds are left intact .. that would indeed be some amazing performance even Boeing would aspire too Here is a copy of the first few lines of the original metric file, and of the Scaled version through the first "Z" change..

%
G90
G49
M3 S18000
G0 X-42.499 Y-42.499 Z3.000
G1 Z-3.532 F780
G1 X-42.472 F21000
X42.499
Y-42.474
Y-42.349
X42.472
X-42.499
Y-42.324
Y-42.199
X-42.472
X42.499
Y-42.174
Y-42.049
X42.472
X-42.499
Y-42.024
Y-41.899
X-42.472
X42.499
Y-41.874
Y-41.749
X42.472
X-42.499
Y-41.724
Y-41.600
X-42.472
X42.499
Y-41.575
Y-41.450
X42.472
X-42.499
Y-41.425
Y-41.300
X-42.472
X42.499
Y-41.275
Y-41.150
X42.472
X41.170
X32.851 Z-3.537

( Code generated by gcode_spliter.py widget )
( by Scorch - 2013 )
(================================================= ========)
G90 (set absolute distance mode)
G90.1 (set absolute distance mode for arc centers)
G20 (set units to inches)
G17 (set active plane to XY)
(G-Code Preamble)
(================================================= ========)
(G-Code Postamble)
G49
(G-Code Postamble)
M3 S18000
G0 Z 0.2500
G0 X-1.6702 Y-1.6702
G1 Z 0.1179 F 5.0000
G1 X-1.6702 Y-1.6702 Z-0.1388 F780.0
G1 X-1.6691 Y-1.6702 Z-0.1388 F21000.0
G1 X 1.6702 Y-1.6702 Z-0.1388 F21000.0
G1 X 1.6702 Y-1.6692 Z-0.1388 F21000.0
G1 X 1.6702 Y-1.6643 Z-0.1388 F21000.0
G1 X 1.6691 Y-1.6643 Z-0.1388 F21000.0
G1 X-1.6702 Y-1.6643 Z-0.1388 F21000.0
G1 X-1.6702 Y-1.6633 Z-0.1388 F21000.0
G1 X-1.6702 Y-1.6584 Z-0.1388 F21000.0
G1 X-1.6691 Y-1.6584 Z-0.1388 F21000.0
G1 X 1.6702 Y-1.6584 Z-0.1388 F21000.0
G1 X 1.6702 Y-1.6574 Z-0.1388 F21000.0
G1 X 1.6702 Y-1.6525 Z-0.1388 F21000.0
G1 X 1.6691 Y-1.6525 Z-0.1388 F21000.0
G1 X-1.6702 Y-1.6525 Z-0.1388 F21000.0
G1 X-1.6702 Y-1.6515 Z-0.1388 F21000.0
G1 X-1.6702 Y-1.6466 Z-0.1388 F21000.0
G1 X-1.6691 Y-1.6466 Z-0.1388 F21000.0
G1 X 1.6702 Y-1.6466 Z-0.1388 F21000.0
G1 X 1.6702 Y-1.6456 Z-0.1388 F21000.0
G1 X 1.6702 Y-1.6407 Z-0.1388 F21000.0
G1 X 1.6691 Y-1.6407 Z-0.1388 F21000.0
G1 X-1.6702 Y-1.6407 Z-0.1388 F21000.0
G1 X-1.6702 Y-1.6398 Z-0.1388 F21000.0
G1 X-1.6702 Y-1.6349 Z-0.1388 F21000.0
G1 X-1.6691 Y-1.6349 Z-0.1388 F21000.0
G1 X 1.6702 Y-1.6349 Z-0.1388 F21000.0
G1 X 1.6702 Y-1.6339 Z-0.1388 F21000.0
G1 X 1.6702 Y-1.6290 Z-0.1388 F21000.0
G1 X 1.6691 Y-1.6290 Z-0.1388 F21000.0
G1 X-1.6702 Y-1.6290 Z-0.1388 F21000.0
G1 X-1.6702 Y-1.6280 Z-0.1388 F21000.0
G1 X-1.6702 Y-1.6231 Z-0.1388 F21000.0
G1 X-1.6691 Y-1.6231 Z-0.1388 F21000.0
G1 X 1.6702 Y-1.6231 Z-0.1388 F21000.0
G1 X 1.6702 Y-1.6221 Z-0.1388 F21000.0
G1 X 1.6702 Y-1.6172 Z-0.1388 F21000.0
G1 X 1.6691 Y-1.6172 Z-0.1388 F21000.0
G1 X 1.6180 Y-1.6172 Z-0.1388 F21000.0
G1 X 1.2910 Y-1.6172 Z-0.1390 F21000.0

Cheers!

[scorch]

Thanks for the feedback. G-Code Ripper is pretty new so I am really open to improvement suggestions. I think I can fix most of your concerns I just need to think about how I want to implement the changes.

(A side note: If the original g-code would have had a G21 command to indicate mm, G-Code ripper would have automatically scaled to inches. Including the feed rates)

Scorch

[jyotti]

Thanks for the feedback. G-Code Ripper is pretty new so I am really open to improvement suggestions. I think I can fix most of your concerns I just need to think about how I want to implement the changes.

(A side note: If the original g-code would have had a G21 command to indicate mm, G-Code ripper would have automatically scaled to inches. Including the feed rates)

Scorch

Indeed, the "Safety Line" as I called it was lacking .. the program came in a bundle with a new machine from China. I tried to scale down one of Carve1's files to 95% last night, and the "N" line numbers prevented it. 19 years since I did any of this stuff .. Everything was MDI .. slowly coming back

Just taking a wild guess, maybe the file was for a laser engraver .. what else would use a feed rate of 21,000 mm per minute? 826 IPM .. hmmm. Thanks again Scortch .. hope the "N" thing isn't too much trouble. Cheers!

[scorch]

I changed G-Code Ripper so that it will now simply ignore line numbers (N codes) and added a option for scaling the feed rate.

@jyotti, I think these changes take care of your major concerns.

The new version is available here: G-Code Ripper

When I have time I think I will add the following features based on jyotti's comments:
- Option to set the output precision (number of decimal places)
- Option to include line numbers in the output (N codes)
- Option to lock the scaling of Z, XY and Feed so you only need to enter the scale once if they are all the same
- Only output feed rate and axis positions when they change. (Reduces the output file size)

For further discussion of G-Code Ripper please reply in the G-Code Ripper thread.

Scorch