Advise on cutting this part

Mark Taylor · Post by **Mark Taylor** » Sat, Mar 03 2007, 2:02PM

I have the following part to cut 1-1/4\" wide by 97\" long...I'm not so much worried about hold down and they want the inside dia. of the cut on the \"tooth\" to be as small as possible.

Can I cut the outline first (leaving a skin) with a 1/4\" bit and then make the following through cut with an 1/8\" bit?

Mark

ps: to be cut out of 1/2\" mdf

Joe Soto · Post by **Joe Soto** » Sat, Mar 03 2007, 4:22PM

Mark, That sounds like it will work and 1/8\" radius from the 1/4\" bit may be close enough too.
Joe

Ryan Hochgesang · Post by **Ryan Hochgesang** » Tue, Mar 06 2007, 8:23AM

Mark,

Control Nesting is not designed to handle this type of operation automatically but if your comfortable with making changes to the existing cnc code that has been written by Control Nesting, I think you could accomplish this quite easily.

I would first set the Outline tool (TOOLING) to the tool that you want to cut with first. Next, I would make sure that the Double Pass Size (SETTINGS) is setup so that the part will cut in one pass. Now, go ahead and nest and write the cnc code. Once cnc code has been written, scroll through the program and find the \"ZSHIFT=#\" and ADD to this value (amt. that you want to leave as skin). NC RESET machine and run program (machine will cut all parts and return HOME <without operator's assistance>). Once the machine has returned HOME, scroll through program to find the \"ZSHIFT=#\" that you had previously changed and return it to the original value. Next, find the \"T#\" and replace it with the \"T#\" that will pick up the smaller dia. tool. NC RESET machine and run program to cut parts loose and remove large fillet. As long as your Tool Manager (F10, F9, F2) has correct dia. of tools used, the outline cut will be accurate.

Hope this information has been helpful.

Mark Taylor · Post by **Mark Taylor** » Tue, Mar 06 2007, 11:06AM

Thanks Ryan...that was the answer I was looking for!

Mark