How to prepare for Shapeoko 3 - New to CNC

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Gadgetman!
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Re: How to prepare for Shapeoko 3 - New to CNC

Post by Gadgetman! » Mon Jun 01, 2015 9:04 pm

That brief flash of the 'DOS window' is also known as the 'command line' window....
Start the command line ( Start/Run 'cmd.exe' )
navigate to where the file is located ( CD \folder\subfolder\andsoonfolder )
Then type the name of the executable and hit Enter to see if it gives you any help...
Weird guy...
Shapeoko 2014F: 1000mm X/Y, 300W Quiet Cut spindle, Arduino Uno/G-shield and GRBL 0.9i
15x30 drag chains, custom spindle mount, 9mm belts, 8mm endplates, 6mm motor plates.

cdninoh
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Re: How to prepare for Shapeoko 3 - New to CNC

Post by cdninoh » Fri Jun 05, 2015 6:35 pm

Ok, so I have the machine running.
Used the instructions for "Running your First Job" to create the coaster in MakerCam and ran it through the Carbide CAM program.
I designed the coaster to be 3" x 3" but it MADE a coaster 1.875" square.

This is where I believed that I needed to calibrate software to the machine.
For that, I believe I need to run the Grlb control panel but I,m getting a "No data from com port after connect. Expecting Grbl version string" and "(Ctrl - X)" message even though the top of the panel say "Grbl Contoller 3.5.1"

Any ideas?
Alex

cdninoh
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Joined: Tue Dec 30, 2014 10:26 pm

Re: How to prepare for Shapeoko 3 - New to CNC

Post by cdninoh » Fri Jun 05, 2015 6:41 pm

just tried changing the baud rate to 11520 and it CONNECTED!!
Yea!!
Now, lets see what I can do with that.
Alex

Brian Stone
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Location: Seattle, WA

Re: How to prepare for Shapeoko 3 - New to CNC

Post by Brian Stone » Fri Jun 05, 2015 6:55 pm

cdninoh wrote:I designed the coaster to be 3" x 3" but it MADE a coaster 1.875" square.
According to other reports of folks running into the same issue, that can be due to the DIP switches for micro-stepping and/or the DIP switches for motor type (e.g. Nema17 or Nema23) being set incorrectly.

For reference, see Grbl defaults and settings, or Using the machine:
http://www.shapeoko.com/wiki/index.php/Shapeoko_3
Shapeoko 2 #7353
1500x1000mm Shapeoko/X-Carve Hybrid, Nema-23's, Belt-Driven Z-Axis /w ACME Screw, Dewalt 611, Soundproof Enclosure
[Fusion 360 | Illustrator] -> Universal G-Code Sender

cdninoh
Posts: 26
Joined: Tue Dec 30, 2014 10:26 pm

Re: How to prepare for Shapeoko 3 - New to CNC

Post by cdninoh » Fri Jun 05, 2015 7:42 pm

Still no luck with calibration.
What the heck an I missing?
Alex

zamp
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Joined: Fri Jan 02, 2015 8:54 pm

Re: How to prepare for Shapeoko 3 - New to CNC

Post by zamp » Fri Jun 05, 2015 8:03 pm

cdninoh wrote:Still no luck with calibration.
What the heck an I missing?
Alex
Per the wiki (http://www.shapeoko.com/wiki/index.php/MakerCAM), did you tell MakerCAM to sue the appropriate number of pixels per inch (usually 72 or 90)?

WillAdams
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Re: How to prepare for Shapeoko 3 - New to CNC

Post by WillAdams » Fri Jun 05, 2015 8:12 pm

Okay, there are a couple of things which govern which size a thing is cut to. From large to small effects:

- microstepping --- this is whether or no the machine moves a full or partial step for the smallest possible electronic signal to move. An SO3 can use 1/4 or 1/8 as set by DIP switches
- #steps as defined in Grbl 20 or 40 for an SO3 --- see http://www.shapeoko.com/wiki/index.php/ ... figuration
- scaling effects between CAD and CAM programs http://www.shapeoko.com/wiki/index.php/ ... references
- cutter diameter and runout
- belt stretch.

Please provide the details of how you’ve configured your machine and how you made the G-code.
Shapeoko 3XL #0006 w/ Carbide Compact Router w/0.125″ and ¼″ Carbide 3D precision collets

cdninoh
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Joined: Tue Dec 30, 2014 10:26 pm

Re: How to prepare for Shapeoko 3 - New to CNC

Post by cdninoh » Sat Jun 06, 2015 2:21 pm

Per the wiki (http://www.shapeoko.com/wiki/index.php/MakerCAM), did you tell MakerCAM to sue the appropriate number of pixels per inch (usually 72 or 90)?[/quote]

I have changed that setting (from 50 to 150) with no apparent change in machined size.
I know , that makes no sense to me either!

cdninoh
Posts: 26
Joined: Tue Dec 30, 2014 10:26 pm

Re: How to prepare for Shapeoko 3 - New to CNC

Post by cdninoh » Sat Jun 06, 2015 2:33 pm

WillAdams wrote:Okay, there are a couple of things which govern which size a thing is cut to. From large to small effects:

- microstepping --- this is whether or no the machine moves a full or partial step for the smallest possible electronic signal to move. An SO3 can use 1/4 or 1/8 as set by DIP switches
- #steps as defined in Grbl 20 or 40 for an SO3 --- see http://www.shapeoko.com/wiki/index.php/ ... figuration
- scaling effects between CAD and CAM programs http://www.shapeoko.com/wiki/index.php/ ... references
- cutter diameter and runout
- belt stretch.

Please provide the details of how you’ve configured your machine and how you made the G-code.

- I do understand about micro-stepping.
- I've tried the "preferences" thing (see previous post).
- the size difference is sufficient to rule out tool diameter and runout (all new stuff anyway).
- same with belt stretch.
Configuration is as instructed during assembly and G-code ------- well, that's an issue for this old fa*t. All I've done so far is get MakerCam to calculate and send the code to a file.
Alex

WillAdams
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Re: How to prepare for Shapeoko 3 - New to CNC

Post by WillAdams » Sat Jun 06, 2015 4:21 pm

Please describe everything from beginning to end:

- which machine
- what motors
- which electronics
- what instructions did you follow
- results of any testing
Shapeoko 3XL #0006 w/ Carbide Compact Router w/0.125″ and ¼″ Carbide 3D precision collets

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