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great wave off kanagawa

Posted: Sun Nov 08, 2015 10:45 pm
by atrueresistance
Thank you for the help! First success. Using the analog/pwm with emblaser settings. Took around 6 hours to complete.

http://imgur.com/6Q5fxj5

Re: great wave off kanagawa

Posted: Mon Nov 09, 2015 6:10 am
by Picengravertoo
Very impressive results! What size is the engraving? The reason I ask, because the time it took to engrave it seems quite long. Can you post more specific details of your PEP5 settings and the type of wood it's engraved on?

Thanks.
Jeff

Re: great wave off kanagawa

Posted: Wed Nov 11, 2015 8:05 am
by atrueresistance
( Analog + Feed Rate )
( 25.0% Feed Rate Change )
( 2794.0000 units/min. )
( Image size in mm: 198.882w x 198.882h )
( Pixel Resolution: 0.254 mm )
( Line Spacing: 0.254 mm )
( Max. Cut Depth: 12000.0000 mm )
( Min. Cut Depth: .0000 mm )
( 3rd Axis Safe Position: 0 mm )
( Start Position: image center )
( Horizontal Axis Offset: 0 mm )
( Vertical Axis Offset: 0 mm )
( Engraving Angle: Left 45° )
( Spindle On/Off Enabled )
( GRBL Code w/G28 EOF )
( Metric Mode )
( X Axis Align 0 )
( Y Axis Align 0 )

The wood is baltic birch ply

Re: great wave off kanagawa

Posted: Wed Nov 11, 2015 10:49 am
by Picengravertoo
OK, that was a fairly large engraving. Did you use Skip White also and if so, was there pure white in the original image that cutdown on your engraving time?

I notice your using a fairly large Pixel Resolution. Are you using a G2 lens, or a 3 element glass?

You may want to look at the J-Tech Photonics lens. It will give you a smaller focal point like the 3EG, but 30% more burning power.

http://jtechphotonics.com/?product=high ... oated-lens

Re: great wave off kanagawa

Posted: Wed Nov 11, 2015 11:26 am
by atrueresistance
Picengravertoo wrote:OK, that was a fairly large engraving. Did you use Skip White also and if so, was there pure white in the original image that cutdown on your engraving time?

I notice your using a fairly large Pixel Resolution. Are you using a G2 lens, or a 3 element glass?

You may want to look at the J-Tech Photonics lens. It will give you a smaller focal point like the 3EG, but 30% more burning power.

http://jtechphotonics.com/?product=high ... oated-lens


Should be white.. I used inkscape to trace bitmap, with remove background checked, exported as PNG. Then resave as jpg to open in PE5. Sometimes opening a PNG directly exported from inkscape results in a curropted PNG. Skip whitespace was checked.

The lens is a 3 element, but I might look into the lens you provided. Should I be using a smaller pixel resolution and running faster?

Re: great wave off kanagawa

Posted: Wed Nov 11, 2015 2:23 pm
by Picengravertoo
If your getting results your happy with using that Pixel Resolution, it will generate less lines of gcode and save on engraving time. The single element glass lens from J-Tech will give you more burning power, so an increase in the feedrate could be used. We have been using a 3" focal distance from LD module face to material with our laser engraving machines with any type of lens we use. What's your focal distance set at?

Yes, the png removed background and then saved as a jpg should have been only white in the background, so it should have optimized the toolpath around the white outside areas.

Re: great wave off kanagawa

Posted: Fri Nov 13, 2015 12:07 am
by atrueresistance
I was way above 3" focal point.