Need Help getting perfect radius corners with Sabre 408

[markh789]

When we fabricate acrylic sign panels such as 6" x 6" with 1/2" radius corners we cant get the machine to give us perfect corners usually where the plunge is made, there is always a small nick. Does anyone have any suggestions of what we could do to solve this problem. Thanks, Mark

 

[J Hill Designs]

can you move the plunge to a flat edge?

 

[Tony Teveris]

You can try to move the start point of the shape on the original outline in Composer, or if you have ArtPATH that comes with Omega 4/5 there is a tool selection where you can 'slice" a new start point anywhere on the tool path.

 

[MikePro]

+1 to moving the plunge to a flat edge. we also route two passes, one leaves a skin at the base of the substrate to keep the shape from shifting during the heavy-routing. final pass to clean it up/cut it free.

 

[miker]

+2 change the start point

 

[SebastienL]

+1 for changing the start point. Also, I'm not familiar with your router but, have it "ramp" in at an angle instead of having the tool plunge straight down in the material. And like MikePro said, do it in two passes leaving something like .025" for the finishing pass. And don't go through the material on the roughing pass.

 

[J Hill Designs]

to really make it a good clean edge, most router control programs let you set the bit offset .001" in for the final pass

 

[Kottwitz-Graphics]

In addition to starting on flat area, make sure you lead in/lead out. That also helps a good bit.