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Messages - Bertho

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Feature Requests / G-code pre-test
« on: August 26, 2017, 03:09:35 PM »
When Mach-3 loads a program it automatically reads the program looking for errors like illegal commands, missing parentheses, or other typos.
I really miss that feature in Mach-4!
It is really frustrating after machining for a long time and then it stops because of a typo. >:(

Mach4 General Discussion / Re: Mach4 M6 Macro problem
« on: May 01, 2017, 08:08:50 AM »
I am learning, not arguing.
If the same tool is used for the finish operation why would the CAM program insert a tool change?
I started to insert:
T1 M6
G43 H1
I just stops at the start of the program and a cycle start continuous but it guarantees that the program will not run without stopping to get the right tool afterwards.

Mach4 General Discussion / Re: Mach4 M6 Macro problem
« on: April 30, 2017, 08:15:06 AM »
OK, I understand, thanks.
Actually I have been looking at the M6 macro and I am thinking about removing the conditional "If the tool is the same..."
As far as I can see, a program would not have a tool change in the middle of a program to change to the same tool so it would not affect it.
At program start it would always stop for a tool change but that would be just one extra click on cycle start.
Is there an easy way to force Tool 1 in Gcode?  That way I could have it included as part of a default safe startup string.  Basically a T1 but without M6.

Mach4 General Discussion / Re: Mach4 M6 Macro problem
« on: April 30, 2017, 12:16:25 AM »
Thanks Steve,
That is why I wrote "option" since I figured someone wanted it that way.
Question:  Will the suggested line only work when Mach4 is started or will it work each time a program is started?

Mach4 General Discussion / Re: Mach4 M6 Macro problem
« on: April 29, 2017, 08:00:56 PM »
We should not have to play games to make it work correctly.  There ought to be a way to clear the old tool without having to do dummy tool changes.
I always clear tool and other offsets as a first line of code and it ought to clear the tool selection too or at least have an option to do that.
There are so many options and I might be overlooking something.

Mach4 General Discussion / Re: Mach4 M6 Macro problem
« on: April 29, 2017, 07:08:07 PM »
I have a related problem and I am probably missing something obvious.
Same initial conditions: The previous program ran with for example T22 and Mach4 was shutdown and the tool removed.
Next time a program that needs T22 is run Mach4 thinks that the tool 22 is still in the machine and it skips the tool change and of course it does not work well to mill without a tool.
What am I missing? How can I automatically clear the old tool settings.  As far as I am concerned it ought to automatically clear the tool setting.

Mach4 General Discussion / Re: Single block mode
« on: March 09, 2017, 06:11:32 PM »
Thanks Tom for helping.  With the previous info it was very easy.
It was my first edit of the Mac4 screens.  I have modified the Mach3 before but I am just getting Mach$ up and running now.
I also changed the DRO decimals since I am using metric and I do not need 0.0000.
Thanks again,

Mach4 General Discussion / Re: Single block mode
« on: March 09, 2017, 05:08:49 PM »
I have the single block mode problem not working too.  Interestingly, on the Mach3 forum several people responded it was working fine.
I have not tried to edit the screen so I did not change anything.  As was said, it ought to work correctly to start with.

General Mach Discussion / Re: Digitizing
« on: July 13, 2013, 08:41:38 PM »
A rod touching two balls forms an electrical contact from one ball to the other.  The same is true for the other two rods.   
If the probe tip is pushed, one or more rods will lift and the electrical contact will be broken.

General Mach Discussion / 3D Printer: Extruder
« on: January 26, 2010, 06:22:31 AM »
I am very interested in building an extruder type 3D printer using my existing CNC mill. There are basically only two items missing:
1: A heater with temperature control.  The heater is typically controlled to hold the temperature around 240C.  Either one of the available extruder head controller boards can be used or an off the shelf PID heater controller (about $30 on eBay).  It might also be directly controlled by the pulse width function similarly to how laser cutters are controlled.  It would be very simple to have a temperature feedback using a voltage to frequency converter that produces “index” pulses to show temperature: 240RPM= 240C temperature.

2: A motor to feed the filament into the heater.  I think the head can be greatly simplified by using a simple machined bracket and a very small stepper motor.  In our case the stepper could be directly driven by existing electronics and the A axis function in Mach3.

Here are examples of the extruder heads.  They are all open source with full documentation.  Typically the mechanics are unnecessarily big or too many pieces since they are usually designed to be easily duplicated by hobbyists with limited tooling.




It is a big PDF file.

It should be very easy for us in this group to do it. Typically we have the CNC experience and we have good equipment to make any custom required parts.
The typical 3D printer hobbyist does not have the mechanical equipment or CNC experience. Most of them are starting from scratch.

Here is some info on conversions done with EMC instead of Mach3:

Is there any information on a conversion like that using Mach3? I do not want to start from scratch if not needed.

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