Diy arduino CNC questions - Page 13 - Router Forums
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post #121 of 153 (permalink) Old 05-08-2019, 02:40 AM
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No confirmation from mike but I believe its correct now. Now try to figure out drawing and cutting..
Sorry but I left the house about 6:45 AM to a customer's shop and did not get back home until 8:35 PM, took my computer in the house then left to go to the pharmacy so they could straighten out a prescription and stopped and bought a few groceries before I came home. Walked the dogs, put the groceries away and ate. Now I'm going through emails answering customer questions and just now getting to the forums.

Looks good and should cut your files correctly now. I'm not sure what software you have decided to use for design(cam) but you might look at CAMBAM for gcode output.

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post #122 of 153 (permalink) Old 05-08-2019, 10:00 AM Thread Starter
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No need to apologize. Thanks for all of the time and effort. I'll play with artcam,aircut for a while.I see that errors seem to be tool changes and such that don't effect cutting as grbl just ignores them.I was determined to finish building it. correctly. Not a lie about what I would make with it.
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post #123 of 153 (permalink) Old 05-08-2019, 11:50 AM Thread Starter
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Basic question. Can i leave work size the same all the time? Workspace is 300x250mm.
What I think I want is go home(switch bounce is 5mm) and always use that point as zero for work.
In material setup,is that point upper right or lower left? I'm Assuming lower represents front,upper is rear of machine.I'll probably figure this out before it gets answered.
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post #124 of 153 (permalink) Old 05-08-2019, 02:22 PM
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Basic question. Can i leave work size the same all the time? Workspace is 300x250mm.
What I think I want is go home(switch bounce is 5mm) and always use that point as zero for work.
In material setup,is that point upper right or lower left? I'm Assuming lower represents front,upper is rear of machine.I'll probably figure this out before it gets answered.
In your design file you can size the workspace to whatever you want, just make sure it is oriented to the CNC. Remember homing is your personal choice and if you want to use it for the origin of your project make sure you use the proper offset from the home position so you can set up your project in the software correctly. In your design software, that origin point is in relation to where you home the machine.

Remember this picture is how the machine is set up now and how your files will be cut. After you home the machine that origin point is directly under your bit.
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Mike
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post #125 of 153 (permalink) Old 05-08-2019, 07:16 PM Thread Starter
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Bad news mike. I'm all neg.no matter where I put zero in set up or where I place object,its positive. Router just kept heading to front left (using your pic above). Checking with github to see how to change it
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post #126 of 153 (permalink) Old 05-08-2019, 07:21 PM Thread Starter
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It says Setting $3=7 and $23=7 solved the problem. Giving it a try
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post #127 of 153 (permalink) Old 05-08-2019, 07:23 PM Thread Starter
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While I play with that what is arcs? I tried a circle and square. G code arcs gave error and halted.
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post #128 of 153 (permalink) Old 05-08-2019, 08:29 PM Thread Starter
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Now home is machine x -260, y-260,z-5. Work is positive
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post #129 of 153 (permalink) Old 05-08-2019, 08:59 PM Thread Starter
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I'm totally confused now.using the pic in #124 above. Upper right corner is 0,0.
Gantry moves left(away from 0,0) into negative numbers
Table moves back(towards gantry)infect moving that 0,0 spot on table under the gantry into negative numbers.
Shouldn't it be the table should be all the way up (past gantry) to be at 0,0?
My original design was the router on back side of gantry but then I didn't want all the wires hanging over workspace.
I think its tear it down start over,or rotate gantry 180?
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post #130 of 153 (permalink) Old 05-08-2019, 11:40 PM
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Originally Posted by jeffp60 View Post
I'm totally confused now.using the pic in #124 above. Upper right corner is 0,0.
Gantry moves left(away from 0,0) into negative numbers
Table moves back(towards gantry)infect moving that 0,0 spot on table under the gantry into negative numbers.
Shouldn't it be the table should be all the way up (past gantry) to be at 0,0?
My original design was the router on back side of gantry but then I didn't want all the wires hanging over workspace.
I think its tear it down start over,or rotate gantry 180?
Leave it just like it is, it is set up right. Like I said homing does not have anything to do with cutting. If you homed it in the upper right corner then X travel to the left is negative and the table moving toward the back on the Y axis should give you negative numbers.

So it is set up right!

Remember along the X axis a move left is negative and a move right is positive.

And along the Y axis, we talked about this before, normally moving toward you along the Y axis is negative and moving away is positive, BUT this is a sliding bed, SO that changes positive to negative and negative to positive because that is actually the direction of cut.

So you said you wanted to use the home position for you origin point so all your files should be designed that way, upper right corner as origin.

Mike
Your BRAIN Is The Most Important Power Tool In Your Shop. Turn It On Before You Turn On Any Other Power Tool.
A Disability Is Only A Disability If You Let It Be One

Last edited by MEBCWD; 05-08-2019 at 11:45 PM.
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