I will try to do it this way. I wanted to use cutter comp but could not figure out how to do it with I J specs. It sort of seemed impossible.
Will Mill Wizard make simple easy to understand gcode for holes? I have made much more complicated with cambam but for flat pieces. this part has three machined faces 90 degrees apart and i figured i would never get the positions right so i made all the features centered around 0 and then used offsets to get them right.
The problem is that if i halt the program and rewind it the offsets can be left a mess and i have to restart Mwch4. Just homing and 0 ing offsets does not always work.
If there is a way to completely remove all offsets (including ones that appear to be hidden?) that would allow me to keep the confusing but editable code as it works quite well.
When doing a circle with Mach 4 in several arcs aren't they just as smooth if the speed does not change and trajectory planning is left on? I did not notice hesitation at the move from arc to arc?
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On 2/14/2022 3:53 AM, Brian Barker wrote:
If your willing to do 180 or less you can do R style arcs. I find that most people have a hard time with the I J vectors to tell where the start point is. But the radius seems to be something that everyone can do !
G0 X1 Y1
G02 X2 R.5 F50
G01 Y0
G02 X1 R.5 F50
G01 Y1
M30
This is how I do it when I am doing hand coded parts. I also use cutter comp so I can reuse the code for finish and roughing passes. But I have been told that I am not normal anymore :(
Thanks
Brian
______________________________
Brian Barker
Engineering / Development
ArtSoft | Newfangled Solutions
Livermore Falls, Maine (USA)
Webpage:
On 2/13/2022 2:09 PM, spencer@... wrote:
that is the first place i looked. i did a couple of tests but not a successful one yet. the one in the thumb drive that i have not tested yet should work. i probably got some addition wrong in the first one. i need to figure out how to use my calculator reliably with negative numbers. Actually I just thought of using a spreadsheet but the copying and pasting would be a bitch.
Then I thought of writing a script to apply the offsets but that would be pretty complicated and a lot of work for one use. Does anyone have a script already written to do this?
If I clean up the gcode, remove comments format every statement the same, it might not be too difficult of a script.
i am just so awful at simple math. i would rather figure out a complicated formula than add a couple of numbers :) And don't ask me about multiplying. I would be lost without a calculator.
i am working on the spreadsheet, decided scripts will take all day to write.
On 2/13/2022 2:13 AM, Paul Galarneau via groups.io wrote:
Take a look at this web page, very clear:
:) :)
-----Original Message-----
From: [email protected] [mailto:[email protected]] On Behalf Of
spencer@...
Sent: Saturday, February 12, 2022 8:12 PM
To: [email protected]
Subject: Re: [MachCNC] arc question
To answer my own question maybe. It looks like I am j are relatibe so they
should not be offset
Feb 12, 2022 4:02:44 PM spencer@...:
I have some gcode that I wrote a long time ago, using cambam, I think. It
made the circles for me so I did not need to understand G code arcs. Over
the years I have move the circular pockets relative to each other by using
offsets.
I want to get rid of the offsets for various reasons. I still am not clear
on arcs but is moving the location of an arc less complicated than I think
it may be? Here is an example. I use G52 to set the X and Y offsets. To move
the circle without using offsets do I just need to add the offsets to all X
and Y coordinates and add the X offset to the I and the Y offset to the J.
I hope it is that easy :)
G52 X 0.01 Y .6125
(thru hole)
(1ST PASS)
G1 F146 X0.0095 Y0.0
G1 F52 Z-0.34 X0.2095
G2 F40.0 X-0.1048 Y-0.1814 I-0.2095 J0.0
G2 F40 Y0.1814 I0.1048 J0.1814
G2 X0.2095 Y0.0 I0.1048 J-0.1814
--
Best regards, Spencer Chase
67550 Bell Springs Rd.
Garberville, CA 95542 Postal service only.
Laytonville, CA 95454 UPS only.
Spencer@...
(425) 791-0309
--
Best regards, Spencer Chase
67550 Bell Springs Rd.
Garberville, CA 95542 Postal service only.
Laytonville, CA 95454 UPS only.
Spencer@...
(425) 791-0309
