GCode Sharing

[ART]

Hi Guys:

 I thought itd be a good idea to have a "Share the Gcode board", for when you have a sharp looking project youd like to share.
Ill start it off witha file I got for debugging. I cut it and it looks great. Please describe your files briefly, or provide a photo.

This one is a Royal Enfield Logo for Motor cycles. Nice pice, about 173 x 150mm's in size, 1mm deep.

[docltf]

MR ART
   
    did you have a enfield,i had one and road it for 4 years.

thanks bill

[W.Jansen]

Hi Art

What shape has the tool to cut this item?

Greetings:
W.Jansen

[ART]

Hi Bill:

 It was  a sharp pointed engraving bit..
.032 I think..

Art

[trev36]

This is a sub routine for making a work holding jig grid pattern 5" by 6" with 1" centers using 3/16 drill . You can easly modify this code to whatever size you need with copy and paste in MS note pad. Hope this helps someone out.

G90G01X0Y0Z1.0F50 (G90= absolute positioning command G01= linear movment)
X0.0Y0.0
G83R.125Q.125Z-1.50F50.G98 (G83= drill peck cycle R= retract value Q= amount of each peck G98 = return to intial absolute Z value G99=return to intial R value.)

M98 P12 L5 (M98=call beginning of subroutine P= subroutine name value L= number of times you want to loop the subroutine.)
G90G01Z1.0
X1.0Y0.0
G83R.125Q.125Z-1.50F50.G98
M98 P13 L5
G90G01Z1.0
X2.0Y0.0
G83R.125Q.125Z-1.50F50.G98
M98 P14 L5
G90G01Z1.0
X3.0Y0.0
G83R.125Q.125Z-1.50F50.G98
M98 P15 L5
G90G01Z1.0
X4.0Y0.0
G83R.125Q.125Z-1.50F50.G98
M98 P16 L5
G90G01Z1.0
X5.0Y0.0
G83R.125Q.125Z-1.50F50.G98
M98 P17 L5   
G90G01Z1.0
M30 (end of program and rewind of program)
%

O12 (Letter O= call to subroutine name value defined)
G91X0.0Y-1.0F50 (G91= Incremental movement point to point only.)
M99(M99=end of subroutine)
%
O13
G91X0.0Y-1.0F50
M99
%
O14
G91X0.0Y-1.0F50
M99
% 
O15
G91X0.0Y-1.0F50
M99
%
O16
G91X0.0Y-1.0F50
M99
% 
O17
G91X0.0Y-1.0F50
M99
%                                                             
 

[Tweakie.CNC]

Hi everybody,

I just love lithophanes and for anyone who hasn't seen one then why not make your own.

This low resolution lithophane (comprising of 172 horizontal lines) was cut using a 2mm dia ball nose milling cutter. The material used is 3mm thick, white, opal, ‘plexi-glass’ and the depth of cut ranges from zero to 2.5mm. The maximum ‘step over’ was set to 0.5mm and the cutting was completed in a one depth pass with a total cutting time of about 45 Minutes. The actual size of the blank is 100mm x 86mm and the start point (X zero and Y zero) is dead centre of this. The Z axis zero point is with the cutter just clear of the surface of the work. Depending on your spindle speed you may wish to adjust the feed rate that is currently set at F450.

Best regards, Cooperman.

[Tweakie.CNC]

Sorry, mistake.

[Tweakie.CNC]

Here is another low res. lithophane with the G-Code for anyone that is interested.

The blank is 150mm high and 105mm wide by 3mm thick,white, opal, Plexiglas. The X and Y zero are dead centre of the blank and Z zero is with the tool just clear of the surface of the blank. The cutting tool should be a 2mm dia ball nose. Again you may need to change the feedrate.

Enjoy.

[Perfo]

Wow. Nice Litho thingies did you write the G code for these yourself ? I would imagine that would take a very long time or can you get a program to convert a picture? Do you normally light these from below? I hope you'll excuse my thickness but what is white,opal, Plexiglas ? It two toned somehow ie surface white and under it is opal ?

[Tweakie.CNC]

Plexiglas is opaque perspex - the type of stuff used on the surface of light boxes (by pcb makers) or for outdoor illuminated shop signs. It is the same color right through. Lithophanes are made by converting a photo or other image to a 'height map' which is then used to produce the GCode. 'Mach1 filter' will do this job converting .bmp or .hpgl files to GCode (it can be downloaded from the Artsoft site). The height map is used in reverse (negative) so that white is cut deep and black is cut shallow, if at all. The litho is back lit, the ones shown above are just stood on a window sill and that does it just fine. Please check out my website for further details  http://www.cooperman.talktalk.net

Tweakie.