10-20-2019, 05:41 PM (This post was last modified: 10-20-2019, 08:55 PM by santanna.)
Hello friends!
I leave on Brazil and use Delta Cad to run on Lazy turn. I have a CNC Sherline lathe and found difficult to run on it specific drawer knob that I design on delta cad.
I'm asking somebody to help me to solve this question, if possible.
10-21-2019, 11:44 AM (This post was last modified: 10-21-2019, 04:51 PM by AlwMVMO.)
The endpoints of your ellipses do not match up precisely.
Check your Lazy Turn software to see how much mismatch is allowed.
Check to see if mismatch tolerance can be changed.
Otherwise edit your DeltaCad to get the ellipses endpoints closer.
Here are the coordinates of your CAD drawing.
Code:
Start X Start Y End X End Y
0.00192100 0.286234 -3.192963 8.269336 ellipse
-3.187902 8.260679 -5.318714 10.228955 ellipse
-5.313773 10.216481 -7.749917 11.903283 ellipse
-7.742008 11.882147 -14.297750 5.286234 ellipse
-14.297750 5.286234 -22.400003 5.286234 line
-22.400003 5.286234 -26.109735 9.574351 ellipse
-26.098922 9.575541 -29.555618 10.542215 ellipse
-29.555618 10.542215 -29.555618 3.994956 line
-29.555618 3.994956 -40.998079 3.994956 line
-40.998079 3.994956 -40.998079 0.286234 line
If this is not the solution to your problem then give more detail to your problem.
10-21-2019, 04:50 PM (This post was last modified: 10-21-2019, 04:56 PM by AlwMVMO.)
I have new information
There is a tiny ellipse (.004768 long) between the 2nd and 3rd ellipses that might be your problem.
I found it after I trimmed (Edit / Slide an endpoint) the endpoints away from the intersection.
Start X Start Y End X End Y
0.00192100 0.286234 -3.192963 8.269336 ellipse -3.187902 8.260679 -5.318714 10.228955 ellipse -5.318714 10.228955 -5.314222 10.230553 ellipse <-- This ellipse is tiny only .004768 long -5.313773 10.216481 -7.749917 11.903283 ellipse -7.742008 11.882147 -14.297750 5.286234 ellipse -14.297750 5.286234 -22.400003 5.286234 line -22.400003 5.286234 -26.109735 9.574351 ellipse -26.098922 9.575541 -29.555618 10.542215 ellipse -29.555618 10.542215 -29.555618 3.994956 line -29.555618 3.994956 -40.998079 3.994956 line -40.998079 3.994956 -40.998079 0.286234 line
(10-21-2019, 04:50 PM)AlwMVMO Wrote: I have new information
There is a tiny ellipse (.004768 long) between the 2nd and 3rd ellipses that might be your problem.
I found it after I trimmed (Edit / Slide an endpoint) the endpoints away from the intersection.
Start X Start Y End X End Y
0.00192100 0.286234 -3.192963 8.269336 ellipse -3.187902 8.260679 -5.318714 10.228955 ellipse -5.318714 10.228955 -5.314222 10.230553 ellipse <-- This ellipse is tiny only .004768 long -5.313773 10.216481 -7.749917 11.903283 ellipse -7.742008 11.882147 -14.297750 5.286234 ellipse -14.297750 5.286234 -22.400003 5.286234 line -22.400003 5.286234 -26.109735 9.574351 ellipse -26.098922 9.575541 -29.555618 10.542215 ellipse -29.555618 10.542215 -29.555618 3.994956 line -29.555618 3.994956 -40.998079 3.994956 line -40.998079 3.994956 -40.998079 0.286234 line
Hello!!
You are correct!! I did not get match the ellipse ends. (both +) never match. I believe that is because the ellipse curvature is fixed and could not be moved. I replace ellipse to straight lines and had successes. I have to make five ivory knobs and I'll do them with straight lines and after that, do hand finishing with sandpaper.
Anyway, many thanks for your attention and sorry my bad English. Have a good week.
10-21-2019, 11:12 PM (This post was last modified: 10-21-2019, 11:24 PM by AlwMVMO.)
Sometimes I will break up an ellipse into several arcs using the "Draw a circular arc using three points" under the Circle tab.
It will give a smooth outline to an ellipse using circular arcs which most CAD/CAM will be able to use.
Also draw using THIN then go to Options menu / Drawing Data . . . and change Thin Line Thickness
to a smaller number like .005 then you will be able to see mismatches more easily.
(10-21-2019, 11:12 PM)AlwMVMO Wrote: Sometimes I will break up an ellipse into several arcs using the "Draw a circular arc using three points" under the Circle tab.
It will give a smooth outline to an ellipse using circular arcs which most CAD/CAM will be able to use.
Also draw using THIN then go to Options menu / Drawing Data . . . and change Thin Line Thickness
to a smaller number like .005 then you will be able to see mismatches more easily.
