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Messages - PicengraverToo

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11
General Mach Discussion / Re: PicEngrave & Impact Engraving
« on: September 14, 2016, 07:54:44 AM »
Hi Dan,

I assume the gcode your getting is not suitable because of my previous statement?

The PEP Z axis gcodes will not impact/retract for every X&Y incremental axis move if there are continuous black areas and that is why you need an oscillating engraver to constantly be impacting.   

Jeff

12
General Mach Discussion / Re: PicEngrave & Impact Engraving
« on: August 23, 2016, 03:51:20 PM »
The PEP Z axis gcodes will not impact/retract for every X&Y incremental axis move if there are continuous black areas and that is why you need an oscillating engraver to constantly be impacting.  

13
General Mach Discussion / Re: PicEngrave & Impact Engraving
« on: August 23, 2016, 02:18:29 PM »
It's achieved by the 7200 strokes per minute of the tool impacting the surface when the Z axis moves the tip down in Black or White areas depending on how you have the settings.

We have no examples of impact engravings, but you can generate gcode for testing with the Demo of PicEngrave. Or, are you already a registered user of PEP? 

Jeff

14
General Mach Discussion / Re: PicEngrave & Impact Engraving
« on: August 23, 2016, 10:35:13 AM »
You would have to mount it on your CNC machine like you would with a hand router such as a Dewalt DWP611. Those Dewalts are made for manual/hand routing, not for CNC machines. The Spindle engraving profile in PEP5 could be used like I stated with a Dithered image.

The built in image editor in PEP5 will created Dithered images, then set the min 3rd axis value at zero and zero the Z axis and diamond tip above the material so it will not impact in white areas, then the max 3rd axis value be just at or slightly below the surface to impact.

There are other impact tool options for sale that may be easier to mount. I just did a quick search on Amazon for that one.    

15
General Mach Discussion / Re: PicEngrave & Impact Engraving
« on: August 23, 2016, 09:05:12 AM »
PicEngrave can be used for impact engraving with a Dithered image and a tool like this. 

https://www.amazon.com/3-Electric-Engravers-Carbide-Tip/dp/B00EQCZWX8/ref=sr_1_13?ie=UTF8&qid=1471956840&sr=8-13&keywords=impact+engraver

It would plunge the tool to the surface in black areas for impacting and then retract in white areas. Or reversed. 

16
Show"N"Tell ( Your Machines) / Re: The Laser Project.
« on: April 21, 2016, 06:54:28 PM »
Thanks Art,

I'm sure it's allot easier to tame a 3W laser diode, then a CO2. :-)

Jeff

17
Show"N"Tell ( Your Machines) / Re: The Laser Project.
« on: April 21, 2016, 07:34:38 AM »
Dan,

There are many ways to setup your machine for this process.

A US Digital MA3 shaft encoder for analog or PWM laser modulation timing belted to the Z axis stepper would allow the Z axis down movement and laser modulation at the same time, but they would be synchronized together. A variable feedrate can be used also.

Or, you can use a switch for different stepper motors. Set the Z axis focal height, then switch to the MA3 stepper to control the laser modulation with Z axis commands. A variable feedrate can be used also.

Or, you can use a DAC or a MA3 as a 4th axis. Z axis down movement commands & A,B or C axis laser modulation commands can be set independently, but still on the same line of gcode. You can also vary the feedrate.

There are other options and somewhat similar, but they are out of Mach3's ability. It consists of using X, Y axis moves and then S commands for the laser's modulation. A variable feedrate can be used with it also.

You can try just using a variable feedrate, but by using both variable laser power and variable feedrate combined together, it gives you more control of the outcome as you can see in my examples.

Jeff

18
Show"N"Tell ( Your Machines) / Re: The Laser Project.
« on: April 20, 2016, 01:29:45 PM »
Hi Dan,

Yes, we control both the feedrate & the laser power and you can set them independent from each other. The variable feed rate is done by a set percentage of the full feedrate based on the laser power values. It helps using both because you can expand the cutting depth range based on the shades in the image. Lighter shades has less burning power and speeds up the feedrate to cut shallower, where darker shades burn with more laser power and slow down the feed rate to cut deeper. A Depth Map image is being used. It's also possible to have the Z axis move the laser's focal point down into the deeper cut areas, use a A,B or C axis command to control the laser power and have a variable feed rate on each line of gcode also. 

Yes, PicEngrave is being used to generate the gcode for our 3D laser diode engraving.

Here is another example in Poplar and it's about the same max depth of cut.

Jeff

   

19
Show"N"Tell ( Your Machines) / Re: The Laser Project.
« on: April 19, 2016, 01:45:00 PM »
Thanks Dan,

The Z axis commands control the laser power and the variable feedrate slows in the higher laser power (darker) areas to cut deeper.

This is not a fast engraving process by no means. It's only a 3W Laser Diode, but the focal point is around .005" so it does get fairly good detail.

The depth of cut was a little over 1/8". This is not from the exact gcode file to make it, but you will get the idea.

X2.511 Y1.048 Z-0.0138 F47.5
X2.518 Y1.055 Z-0.0143 F46.4
X2.525 Y1.062 Z-0.0139 F47.3
X2.532 Y1.069 Z-0.0132 F48.9
X2.539 Y1.076 Z-0.0187 F36
X2.546 Y1.083 Z-0.0240 F23.5
X2.553 Y1.09 Z-0.0239 F23.8
X2.56 Y1.097 Z-0.0221 F28
X2.567 Y1.104 Z-0.0214 F29.6
X2.574 Y1.111 Z-0.0217 F28.9
X2.581 Y1.118 Z-0.0217 F28.9
X2.588 Y1.125 Z-0.0216 F29.2
X2.595 Y1.132 Z-0.0222 F27.8
X2.602 Y1.139 Z-0.0216 F29.2
X2.609 Y1.146 Z-0.0208 F31.1
X2.616 Y1.153 Z-0.0199 F33.2
X2.623 Y1.16 Z-0.0199 F33.2
X2.63 Y1.167 Z-0.0199 F33.2
X2.637 Y1.174 Z-0.0197 F33.6
X2.644 Y1.181 Z-0.0191 F35.1
X2.651 Y1.188 Z-0.0190 F35.3
X2.658 Y1.195 Z-0.0194 F34.4
X2.665 Y1.202 Z-0.0191 F35.1
X2.672 Y1.209 Z-0.0192 F34.8
X2.679 Y1.216 Z-0.0191 F35.1
X2.686 Y1.223 Z-0.0191 F35.1
X2.693 Y1.23 Z-0.0191 F35.1
X2.7 Y1.237 Z-0.0192 F34.8
X2.707 Y1.244 Z-0.0191 F35.1
X2.714 Y1.251 Z-0.0191 F35.1
X2.721 Y1.258 Z-0.0191 F35.1
X2.728 Y1.265 Z-0.0192 F34.8
X2.735 Y1.272 Z-0.0191 F35.1
X2.742 Y1.279 Z-0.0191 F35.1
X2.749 Y1.286 Z-0.0192 F34.8
X2.756 Y1.293 Z-0.0195 F34.1
X2.763 Y1.3 Z-0.0198 F33.4

20
Show"N"Tell ( Your Machines) / Re: The Laser Project.
« on: April 19, 2016, 11:45:39 AM »
Here is a 3D engraving we did in Poplar using a 3W 445nm Laser Diode with an Air Assist.

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