Thread: Profile Circle on 3040
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How am i not helping myself.
Also you said that you ran his code!! which code Doddy's is the only code I see in this thread and that has a square and circle.
If you want help you have be more specific with the questions as the crystal ball is broken...Clive
The more you know, The better you know, How little you know
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29-11-2017 #2
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I'm pretty new to cnc and i posted on here for help not criticism.
Did you run Doddy's code !! if so what is the result?..Clive
The more you know, The better you know, How little you know
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29-11-2017 #4
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Did you zero your Z on the top of the part? You can see in his code:
G0 X0.0 Y0.0
G0 Z1.0
G1 F300.0 Z-0.4
G1 F800.0 X40.0
G1 Y40.0
G1 X0.0
That the Z will move to 1mm above the part and then sets the feed rate to 300mm/min and drops the Z to -0.4mm below the top of the part.
What do you mean by (just hovers) ie does it stay still or does it follow the intended path?..Clive
The more you know, The better you know, How little you know
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29-11-2017 #6
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Yes I zeroed the top.
The z seems to move up the further it gets into the job...Clive
The more you know, The better you know, How little you know
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01-12-2017 #8
...or...
...the PCB is not fixed to the table. - Are you using double sided tape over the whole surface of the PCB?
...the PCB is not flat enough. - Measured over the whole area with a caliper?
...the PCB is not even in thickness. - Checked for variations with a caliper?
...the table is not levelled.
...the X is not levelled to the table surface and is tilting the Z.
PCB is not the optimal for this sort of tests but many things can be wrong. Work with the G-code given to you, once you can mill a square you can move on to making other things, but don't jump from one to the other type of code. Personally I think you have alignment issues somewhere. You have to align everything mechanically as good as possible, measure every angle BEFORE surfacing the table. The surfacing is the last moment, when everything else is as good as it can be.
When making PCB it is important that you fix the PCB over the whole area to eliminate warping or bending. At least if it is a large piece and if the PCB is low quality.
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01-12-2017 #9
Sorry for the delay on this i ended up go away for a few days for work.
I changed my mach3 settings to the same as Kevs and it machined fine this time round.
https://youtu.be/Jq5Ni7jtQcs
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