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Messages - wild.bill

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General Discussion / Re: A3 vs K40
« on: February 06, 2018, 08:14:29 PM »
Rumor has it Wild.Bill has 3 of every toy (tool) ever made.
No - I am down to only 1 CNC after taking the second one apart for parts.

But on the serious side - one need's do decide what they want to make and then choose the proper tools for the job. And sometimes it takes more then one tool to fill the needs.

General Discussion / Re: A3 vs K40
« on: February 06, 2018, 04:35:34 PM »
It depends  on the material you work with. A K40 will etch ceramic tiles and clear acrylic where the diode laser will do nothing. Other things having more power means you can work faster. It really depends on what you are trying to do. Ideal is to have both.

Projects / Re: Slate Baby!!!!!
« on: February 05, 2018, 04:27:31 AM »
That too bad that you put the wrong logo on it.

No offense. I live in Minnesota, so this Super Bowl sucked for me
I like football but don't live by it. It was a good game with interest from start to finish and the team that played better won.

I'm just glad I didn't print the one's that said CHAMPIONS.

Projects / Re: Slate Baby!!!!!
« on: February 04, 2018, 02:57:38 PM »
Ready for the game with new slate coasters

Trouble Shooting / Cohesion/GRBL-LPC - not etching image
« on: February 02, 2018, 09:39:10 AM »
To start I am doing this on a K40 with the Cohesion controller loaded with GRBL-LPC.
Postprocessor chose Cohesion & GRBL, & max/min are set to 1000/0. This requires S values from S1000 to S0.

Problem 1:
Trying to etch any grayscale image at 400 -> 40% of power.
On the control page I can manually turn the laser on and off, and I can outline the frame with the laser on. When I run the image the head moves but the laser never turns on.
I have been able to make grayscale images on this hardware setup using other software
and have done grayscale with T2 on the hardware using Smoothie firmware in the controller.

Problem 2:
I tried to save the machine G-Code but I can't see if/where it is being saved. I was going to try to debug the problem but without the G-Code I can't see what is being sent to the controller.

General Discussion / Re: Grayscale with K40
« on: January 27, 2018, 09:16:15 PM »
The birch that I am using is cut into 6"x6" pieces.
What you don't see is the huge stack of wood that got dumped before I started getting good images.
LOTS of trial and error.

General Discussion / Re: Grayscale with K40
« on: January 27, 2018, 10:05:33 AM »
Attached are the before, after, and Photoshop screen showing the curve used.

General Discussion / Re: Grayscale with K40
« on: January 27, 2018, 06:06:00 AM »
It is on the K40 with a Cohesion Mini board/ Smoothie using grayscale. I need to also add that I am applying a Photoshop curve to make up for the non-linear laser.

The "L" signal which drives the laser is PWM. Still learning the details of the
board but I "think" its being driven via a FET pulling the signal to ground.
It's NOT TTL but is used with a PWM signal the same way.

It's a big learning curve with Smoothie - much like when I was learning the Arduino/GRBL
controllers. I am digging fast and deep because my next Cohesion Mini should be here soon
thats going on the ACRO system - and it looks like I will have to write the first guild for doing it.

General Discussion / Re: Grayscale with K40
« on: January 26, 2018, 09:53:30 PM »
Yup -

General Discussion / Re: Grayscale with K40
« on: January 26, 2018, 08:55:02 PM »
I started having a problem with an X shift tonight with the K40 - that I will have to fix. Here is the latest grayscale that does have a shift in it. I wounder if there is a message in this image?

Thanks - and we already talked about saving the Machine G-code.
I will let everyone know when I have it working.

T2 Engraving / Difference between Smoothie and Cohesion3D postprocessor
« on: January 25, 2018, 03:43:38 PM »
I was wondering what the difference was between the post processors for Smoothie vs Cohesion3D?

I am in the processes of putting a Cohesion3D board running Smoothie on my ACRO machine and want to make sure that I am using the correct one.  When I have it all working I will do a write up on the wiring and configuration file. I am working toward running the machine without a computer connected all the time using the SD card and LCD display.

General Discussion / Re: Grayscale with K40
« on: January 23, 2018, 02:11:17 PM »
Actually I have another print now that i think is coming out even better. I will make sure that pixel is corrected as well.

General Discussion / Grayscale with K40
« on: January 23, 2018, 12:47:19 PM »
It's been way to quiet so I figured I would show this grayscale image I just etched on Birch using the K40. I did photoshop - curves to get a more linear result.

General Discussion / Re: Technique for Creamic tiles with diode laser
« on: January 18, 2018, 06:19:05 AM »
I did not notice any smell burning the paint.

Next project is to see how well dithered images work with mirrors.

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