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Messages - Tweakie.CNC

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4791
Hi Per,

Not that it is of any consequence but the I and J are the X axis and Y axis offsets for arcs as defined in the NIST interpreter specification.

Exactly how you know which IJ mode to select, I have absolutely no idea but each CAD / CAM has it's own preference and once known then that is the IJ mode to use.
I use 'trial and error' but I am sure others will have a better, foolproof, way to decide between G90.1 and G91.1.

Tweakie.

4792
Hi Per,

In Config / General Config change the IJ Mode then regen. Toolpath.

(Ideally your generated GCode should contain the correct G90.1 (absolute) or G91.1 (incremental) dependant on how the arcs have been drawn in your CAD / CAM program).

Tweakie.

4793
Hi Brent,

Welcome to the forum.

There are a number of posts relating to the Emco 5pc - perhaps these will be of interest to you - just add emco 5pc in the search box  http://www.machsupport.com/forum/index.php?action=search2

If you have any specific questions please post them as a new topic in the General Mach Discussion section where they will receive the best coverage.

Tweakie.

4794
Show"N"Tell ( Your Machines) / Re: DC-K40 Laser conversion issue
« on: May 13, 2014, 01:41:12 AM »
Hi Jeff,

I am not sure of your wiring setup so can't comment on your question.

What I am saying is do not use the spindle relay to switch the laser on / off by disconnecting the GND connection to the laser PSU.

Tweakie.

4795
General Mach Discussion / Re: Pc recommendations for Mach3
« on: May 12, 2014, 11:34:16 AM »
Quote
I would still like to use V-carve pro or even Rhino in the future on the computer while CNC is running sketching or drawing next project.

Hi Brooks,

Not a good idea.  :'(
It is far better to have a dedicated machine PC which just has Mach3 on it and then use a laptop (or similar) for your design work. ;)

Tweakie.

4796
Newfangled Mill Wizard / Re: Suggestion for Mill Wizard
« on: May 11, 2014, 11:58:19 AM »
Hi graemecns,

If you change the X axis Scale DRO from +1.0000 to -1.0000 that will do it (if you have chosen bottom left for the origin X zero, Y zero that will change to bottom right but if you have chosen the centre of the work as the origin then there is no problem).

Hope this helps.

Tweakie.

4797
General Mach Discussion / Re: h-bot can mach3 run them?
« on: May 11, 2014, 11:51:21 AM »
Hi Nobby,

All the parts (V-Groove, V-Wheels, belts, pulleys etc.) can be obtained here http://openbuildspartstore.com/ - they also have many agents / distributors around the world.

It depends on the accuracy you require (belts will stretch) but the H-Bot idea is interesting.

Mach3 is not designed for the H-Bot type of drive configuration but I am sure some clever person could write a post processor for it  ;)

Tweakie.

4798
Tangent Corner / Whoops !
« on: May 10, 2014, 11:42:03 AM »
Sometimes a little knowledge is a bad thing.  ;D

Tweakie.

4799
Hi Nobby,

Just one point - I suspect you will get too much backlash using flexible drill shaft extension cables between the steppers and the axis screws - maybe wrong because I have never tried it but it is just a thought.

Tweakie.

4800
Hi Boyd,

Lots have been in this position and there are a number of slightly different approaches dependant on your machine / setup. If you use the search box (at top of page) and search for squaring gantry or homing you will find many posts and possible solutions that may suit your application. Here are just a few...

http://www.machsupport.com/forum/index.php/topic,25867.0.html
http://www.machsupport.com/forum/index.php/topic,24240.0.html
http://www.machsupport.com/forum/index.php/topic,18258.0.html
http://www.machsupport.com/forum/index.php/topic,11951.0.html

Tweakie.

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