The outside corners ARE arcs as I suggested in my first post.
N0320 M03
N0330 G01 Z0.0600 F360.0
N0340 G02 X10.5200 Y8.2500 I0.0000 J-0.0200 F200.0N0350 G01 Y0.0000
N0360 G02 X10.5000 Y-0.0200 I-0.0200 J0.0000N0370 G01 X0.0000
N0380 G02 X-0.0200 Y0.0000 I0.0000 J0.0200N0390 G01 Y8.2500
N0400 G02 X0.0000 Y8.2700 I0.0200 J0.0000N0410 G01 X10.5000
N0420 M05
So I stand by everything I said in my first reply. So back to what you can do about your rounding. Apart from what I said about speed and acceleration, and with specific regards to what I said about CV
TUNING you can....
1) Use "Stop CV on angles >" but as ALL your angles are 90 degrees using this with ANY value UP TO and including 89 will do exactly what the label name says i.e. it will turn CV OFF for ALL your angles i.e. you will get the same result as if you use Exact-Stop. Which is what I've been trying to say.
2) Turn on CV Distance and set it to SOME value. Now - you CAN set it to 0.01 if you want but this is saying - don't allow a blend until you're within 0.01 of an inch of each corner. This is really quite harsh and wil again effectively turn CV OFF. I would suggest YOU decide how much rounding is acceptable to YOU and have a play. So for example you might say I can live with 0.25 or maybe 0.1. If so, at least you're allowing CV a chance to work to some extent and you MAY find the results acceptable - you MAY not - it's YOUR call. All I have been trying to suggest is that you attempt to
TUNE rather than just "hammer" it from the get go.
3) Take a look at turning on CV Feedrate and entering SOME value. This is a setting that's very rarely mentioned for some reason and when it is it's usually recommended to "hammer" this one as well rather than
TUNE it gently to get results that are acceptable to YOU. See
http://www.machsupport.com/forum/index.php/topic,20251.msg141302.html#msg141302 where I've attempted to explain its use.
CV
TUNING is a bit of an art form - you can tweak it gently or you can smack it so hard you effectively kill it - and that's all I've been trying to say.
In the end though - you can't beat the laws of physics. No machine can change direction *instantly* but *good* acceleration can't be beaten for minimizing rounding.
Good luck and happy
TUNING MODIFIED:ADDED BACKPLOT OF CODE RICH
EDIT: Thanks RICH