Breaking circles?

[Rory]

Why must a circle be broken into two pieces in order for the machine to follow the geometry?

 

Does it have anything to do with breakarcs in the post?

 

Thanks,

Rory

[Fig sign]

Both this 2 htings are for those machines ,that are not capable of doing more then 180 degrees arc

 

Not on every machine you can write and do

 

G3 R-10

[Rick Damiani]

MasterCAM 'circles' all have one breakpoint in them (located at the 3 o'clock position) becasue you have to have a starting point to mill them from. Rather than forcing you to select a start point for every circle you want to mill, MasterCAM simply makes them pre-broken. Don't want to start there? No problem - you can use Dynamic to change the start point when chaining, add your own break points, or rotate the circle.

 

breakarcs in the post allows you to deal with controls that won't do 360DEG arcs. It's not related to the lack of 'true' circles in MasterCAM.