[Solved] Odd behavior from just one tool path
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Post one question per topic.
[Solved] Odd behavior from just one tool path
Andrew
This model has one tool bath but is running both inside and outside during it. The model was edited several times and at one time, with two tool paths it did do 1) all inside cuts 2) another that did the outside cut.
Don't know if this is a display problem or something wrong in the tool path.
Thanks
Jim
This model has one tool bath but is running both inside and outside during it. The model was edited several times and at one time, with two tool paths it did do 1) all inside cuts 2) another that did the outside cut.
Don't know if this is a display problem or something wrong in the tool path.
Thanks
Jim
Last edited by jamby on Wed Nov 25, 2020 4:13 pm, edited 1 time in total.
Re: Odd behavior from just one tool path
Hi Jamby,
Apart from the fact I am not a QCAM subscriber ...
Your ngc runs fine: It cuts all the insides CCW, followed by the outside CW.
Constructor to constructor:
I am not aware how you clamp this, but cutting out large pieces without bridges troubles me.
For these shapes even with a vacuum table.
Plunging 2x the cutter diameter and straight down troubles me.
The smaller holes I would cut helical, that doesn't clog your cutter.
Going up after each cut I would expect a G0. The faster your out of cut the better.
One could start with the outer contour near the end of the last inner cut.
Your dxf itself is a major mystery for me.
> There is a circle at the origin with radius:
-2147483648' 8988465674311578476003883458326967976270757867609612092806662678859711890369052157063584584531181568"
The most decimal digits a double can store is about 16 (15.95)
> There are 2 (unlisted) block references at the origin:
CAMTOOLPATH$$LxcncIn$$Profile1 & 2
> In total there are 10 Blocks of which none is showing in my Block List
Again: I am not a QCAM subscriber ...
Thanks for posting this
I consider to remain opted out on QCAM
Regards,
CVH
Apart from the fact I am not a QCAM subscriber ...
Your ngc runs fine: It cuts all the insides CCW, followed by the outside CW.
Constructor to constructor:
I am not aware how you clamp this, but cutting out large pieces without bridges troubles me.
For these shapes even with a vacuum table.
Plunging 2x the cutter diameter and straight down troubles me.
The smaller holes I would cut helical, that doesn't clog your cutter.
Going up after each cut I would expect a G0. The faster your out of cut the better.
One could start with the outer contour near the end of the last inner cut.
Your dxf itself is a major mystery for me.
> There is a circle at the origin with radius:
-2147483648' 8988465674311578476003883458326967976270757867609612092806662678859711890369052157063584584531181568"
The most decimal digits a double can store is about 16 (15.95)
> There are 2 (unlisted) block references at the origin:
CAMTOOLPATH$$LxcncIn$$Profile1 & 2
> In total there are 10 Blocks of which none is showing in my Block List
Again: I am not a QCAM subscriber ...
Thanks for posting this
I consider to remain opted out on QCAM
Regards,
CVH
Last edited by CVH on Sun Nov 22, 2020 4:14 am, edited 2 times in total.
Re: Odd behavior from just one tool path
@ Andrew
May I ask what the reason is that this dxf doesn't convert (CU) to mm?
After an Undo of this CU command the dim text act weird ...
... but in a way that is also true for dim texts CU from mm to inch followed by an Undo.
Regards,
CVH
May I ask what the reason is that this dxf doesn't convert (CU) to mm?
After an Undo of this CU command the dim text act weird ...
... but in a way that is also true for dim texts CU from mm to inch followed by an Undo.
Regards,
CVH
Re: Odd behavior from just one tool path
CVH
The material is 1/4 (*) MDF and the cutter is a router bit. Parts are located by screws outside the finish size and one each at the centers of the large bores.
Questions about the internal structure of the dxf are above my pay grade.
I was curious about the single cam toolpath containing both all inside cuts and a outside cut. As there were originally two toolpaths with inside cuts in the first profile and the outside and a second with the outside cut in it. But after the second one was deleted its path continued to appear in the first. No idea why its that way but thought Andrew might find an answer.
What was the simulation software you used? I've been using Camotics.
Thanks
Jim
(*) edit
Version: 3.18.1.0 (3.18.1)
Internet: QCAD.org
Build Date: Oct 4 2017
Revision: 24e23aa
Qt Version: 5.8.0
Architecture: x86_64
Compiler: gcc 4.8.1
Centos 7
The material is 1/4 (*) MDF and the cutter is a router bit. Parts are located by screws outside the finish size and one each at the centers of the large bores.
Questions about the internal structure of the dxf are above my pay grade.
I was curious about the single cam toolpath containing both all inside cuts and a outside cut. As there were originally two toolpaths with inside cuts in the first profile and the outside and a second with the outside cut in it. But after the second one was deleted its path continued to appear in the first. No idea why its that way but thought Andrew might find an answer.
What was the simulation software you used? I've been using Camotics.
Thanks
Jim
(*) edit
Version: 3.18.1.0 (3.18.1)
Internet: QCAD.org
Build Date: Oct 4 2017
Revision: 24e23aa
Qt Version: 5.8.0
Architecture: x86_64
Compiler: gcc 4.8.1
Centos 7
Last edited by jamby on Sun Nov 22, 2020 8:36 pm, edited 1 time in total.
Re: Odd behavior from just one tool path
Correct, Andrew can.
MDF 1/8? You plunge from Z0.2 to Z-0.24, I am asuming that zero is the top of your material.
Dhole 0.15 & Dtool 0.125 = Smoke
On the other hand, I use a Jäger spindel 20-60k revs, dry ceramic bearings.
And I am used to Feeds of up to 400 down and 800-1200mm/min (15; 30-50 inch/min)
I use Eding CNC: (easy to find)
Bert Eding is/was a machinist himself.
The CNC driver soft:
Free and functional without one of his driver cards.
Includes a CAM, outdated, libraries without support, but very functional.
Includes bridges, outside, inside, engraving, pocketing ...
Includes a lot of subroutines
Allows custom subroutines, like Helical ...
...
And with a driver card:
Non-level plane.
Trajectory control, Look ahead Feed ....
...
MDF 1/8? You plunge from Z0.2 to Z-0.24, I am asuming that zero is the top of your material.
Dhole 0.15 & Dtool 0.125 = Smoke
On the other hand, I use a Jäger spindel 20-60k revs, dry ceramic bearings.
And I am used to Feeds of up to 400 down and 800-1200mm/min (15; 30-50 inch/min)
I use Eding CNC: (easy to find)
Bert Eding is/was a machinist himself.
The CNC driver soft:
Free and functional without one of his driver cards.
Includes a CAM, outdated, libraries without support, but very functional.
Includes bridges, outside, inside, engraving, pocketing ...
Includes a lot of subroutines
Allows custom subroutines, like Helical ...
...
And with a driver card:
Non-level plane.
Trajectory control, Look ahead Feed ....
...
Last edited by CVH on Tue Aug 15, 2023 8:33 pm, edited 1 time in total.
Re: Odd behavior from just one tool path
CVH
Sorry about that, I must have been thinking (unusual activity) about the cutter dia. its 1/4 (actually mic's 0.240 6mm) MDF. Z is the top of the material.
The router has a little wheel to set the speed with and I am guessing 18,000 and above.
Eding CNC seems to be a Windoze only system and I try to stay in Linux , Centos 7 and Ubuntu.
Jim
Edit: Its a Bosch 1617evs router running between 20,000 and 25,0000
Sorry about that, I must have been thinking (unusual activity) about the cutter dia. its 1/4 (actually mic's 0.240 6mm) MDF. Z is the top of the material.
The router has a little wheel to set the speed with and I am guessing 18,000 and above.
Eding CNC seems to be a Windoze only system and I try to stay in Linux , Centos 7 and Ubuntu.
Jim
Edit: Its a Bosch 1617evs router running between 20,000 and 25,0000
Last edited by jamby on Mon Nov 23, 2020 12:17 am, edited 1 time in total.
Re: Odd behavior from just one tool path
Can't reproduce that - it converts flawless to mm! Maybe you noticed a wrong Label Format what is interpreted by you as "not converted" ...
After that undo you have to select the dims and Reset the Label position below Menu / Dimension.
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Win10/64, QcadPro, QcadCam version: Current.
If a thread is considered as "solved" please change the title of the first post to "[solved] Title..."
Win10/64, QcadPro, QcadCam version: Current.
If a thread is considered as "solved" please change the title of the first post to "[solved] Title..."
Re: Odd behavior from just one tool path
I know that all this is Off-Topic ...
What is good practice.
The 0.01" thickness that remains might hold everything together ... OR NOT
That depends on various inaccuracies: Router stiffness/repeatability - actual panel thickness - top touch off - 'pulling up' by a standard cutter ......
My approach with a spoil-board is to include fixing all the major parts after the smaller holes are made.
- Fix stock outside the working area
- Drill/Route fixing holes to fix the larger circular pieces
(In fact I use at least 2-3 up to several, depending the size, MDF flexes a lot)
- Drill/Route 0.15" & 0.25" holes
- Pause router at a rest position
- Fix all with additional screws (Not too tight, MDF flexes under stress)
- Process circles + outer contour
You definitely will remember this advice after a piece has dislodged and destroys everything in its path !
Regards,
CVH
Even Eding (Indeed Windows only) can't make a hole with a diameter of 0.15" (3,81mm) using a 1/4"/0.240"/6mm cutter.
You probably meant 'Z=zero is the top of the material.'
What is good practice.
The danger is that with cutting the outer contour your main part isn't fixed at all.
The 0.01" thickness that remains might hold everything together ... OR NOT
That depends on various inaccuracies: Router stiffness/repeatability - actual panel thickness - top touch off - 'pulling up' by a standard cutter ......
My approach with a spoil-board is to include fixing all the major parts after the smaller holes are made.
- Fix stock outside the working area
- Drill/Route fixing holes to fix the larger circular pieces
(In fact I use at least 2-3 up to several, depending the size, MDF flexes a lot)
- Drill/Route 0.15" & 0.25" holes
- Pause router at a rest position
- Fix all with additional screws (Not too tight, MDF flexes under stress)
- Process circles + outer contour
You definitely will remember this advice after a piece has dislodged and destroys everything in its path !
Regards,
CVH
Re: Odd behavior from just one tool path
CVH
When I looked the statement below over before submitting it I thought there might be some confusion about the Material size, Cutter size.
Thanks for you interest
Jim
When I looked the statement below over before submitting it I thought there might be some confusion about the Material size, Cutter size.
I know that all this is Off-Topic ...
jamby wrote: ↑
Sun Nov 22, 2020 12:35 pm
the cutter dia. its 1/4 (actually mic's 0.240 6mm)
Even Eding (Indeed Windows only) can't make a hole with a diameter of 0.15" (3,81mm) using a 1/4"/0.240"/6mm cutter.
So let me state here that the Cutter is 1/8" in diameter and the material thickness is !/4" thick.Sorry about that, I must have been thinking (unusual activity) about the cutter dia. its 1/4 (actually mic's 0.240 6mm) MDF. Z is the top of the material.
Thanks for you interest
Jim
Re: Odd behavior from just one tool path
Figures, 1/8 in 1/4
I hope that Andrew sees enough links to your post.
Up to now, no issue is fixed, explained or looked at.
You can always blame it on me.
Regards,
CVH
I hope that Andrew sees enough links to your post.
Up to now, no issue is fixed, explained or looked at.
You can always blame it on me.
Regards,
CVH
Re: Odd behavior from just one tool path
jamby: When I load the DXF file, the two toolpaths you mention are empty (presumably deleted?). Can you attach the file with the toolpaths? I can create a new toolpath just fine but I would need to know the exact parameters / geometry you have used.
Re: Odd behavior from just one tool path
Andrew
Here's a second copy and a screen dump of the file open on my screen.
Thanks
Jim
Here's a second copy and a screen dump of the file open on my screen.
Thanks
Jim