[V8Goose]

Hi and thanks for looking.

I'm running a Sherline lathe and mill through EMC2 on Ubuntu and everything has been going well for the three weeks that I have ventured into this.

I'm having trouble with a profile exported from DolphinCam. I'm trying simply put a diameter on the end of 12mm acrylic stock. The animation in DC appears to be correct for the tool path but once opened in EMC2 Turn, a line in the code cuts my radius into a cone.

The job is done in two parts within the same .nc file. The rough pass completes correctly (nice radius). The finish pass moves the tool to Z0 and moves it to an end X,Y with Radius = 4.

My lathe doesn't process the radius and moves the tool in a straight line cutting the stock to a cone.

The line in the g-code is:

N1135G01Z0.0
N1145G02X3.8Z-4.0R4.0 <-- This one
N1155G01Z-19.2

Q: Is there a setting in EMC2 that defines arcs?

If not, do you have any ideas as to why this is happening.

Thanks a lot!

Goose

[samco]

we might need to see more - are you setting the plane to (g18)

sam

[V8Goose]

Hi Samco...

Thanks for the reply.

Interestingly the plane setting was G17 not G18. I changed it and it produced an arc but the wrong way around.

Pic 1: G17 or G19
Pic 2: G18

At least with G18 it's an arc, now all I need is it to be the right way around and I'll be happy.

Thanks!

[alan_3301]

Sorry if I am way off here, but change the G2 for a G3? (counterclockwise)

[V8Goose]

Hi Alan...

In fact you are spot-on, however the frustration of it all is that every other arc in the .nc file is G2 and is processed properly except the finishing pass which I need to change to G3 for it to work

Also no matter what I do, I cannot get that radius on the end of my stock. Both the rough and finish passes miss the end of the stock by around .9mm so I'm left with a flat end. That's a problem with me and the software and not for this thread but I thank you for your input.

I give up on cnc lathe software!

Goose