# Thread: newbie on gibbscam 2009

1. JD0909

Yes this is easy to do in Gibbs, You don't need solids to do programs like this I have attached a program that will do what you want

Just change speeds & speeds & tool T--- H--- to suit

Just single block to watch the movement of the machine, it has a entry & exit radius of .060 overlap of .010

Z0 being the highest point at .375 down to the counter bore of 1.790 & will cut a .012 chamfer

2. Thanks for the reply Mactec54. I looked at the program u have generated but i dont see the Z depth changing as it rotates around the c-bore. Is the Z not suppose to decline as it moves towards X.895(half of 1.790)and Y0 because of the arc of the 3.485 diameter? and then incline when it works towards X0,Y-.895 and then repeat for the next 2 quadrants?

thanks again

3. JD0909

That is for the the 1.790 bore which is a straight chamfer around the hole, if you want to do around the top edge that a different chamfer, you need solids to do that chamfer,You can do it like you are saying, but it will never be correct trying to do it like that, It should of been done using a 4th axes, even with the 4th axes, you still need the solids to do that chamfer & the 4th axes software, You can do it with the 3 axes software but it will not be right

4. Yes, to chamfer the edge of the cbore on the 3.485" diameter you will need Z axis movement. That program won't work for your application. Solid Surfacer would make it easy because you can extract geometry from the edge, but since you don't have the option you need to create the geometry on your own or find someone who can export it to you.

• Thanks again for the help, i thought so it was for a straight chamfer. its too bad its not possible on a 3 axis.....and thanks for answering my question about needing solid surfacer....

• JD0909

It is possible to fudge it with 3 axis but will not be perfect, You need to create the geometry as cadman has said

when you first posted, It read as if you wanted to chamfer the counterbored hole with a step down of .5 on the first part

What you wanted to do was Chamfer the top edge of the counterbore on a cylinder/tube

Tell your Boss to get the Gibbs rep to do a demo for you, some will help you out with a problem like this

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