Ramp In Not Being Cleaned Up With Double Pass

[Jason Wilson]

Hello All,
I recently experienced something here that I wanted to post for everyone to see but also to see if anyone has experienced this before and why it happens.

Basically, I have been experimenting with operations that may help with eliminating ridges due to bit flex.

I am trying out setting my max penetration to about half of the total thickness of the material, .375

On some sheets I like to use the Off Fall Cut feature depending but when I have both of these things set the router would not go back and clean up the initial ramp in for some reason.

Anyone have any ideas about this ?

Thanks
JMW

[Daniel Vonderheide]

Jason,

If you email your job and the export file from your machine to cabinets@thermwood.com we can take a look at this and see if we can reproduce it. Thanks.

[Josh Rayburn]

I see that all the time. The first pass also starts at the corner but puts the radius of the bit at the corner and does not overcut the radius. Then the end of the ramp does the same, so there's a little extra material there in the corner to cause some deflection when the second pass comes to clean it up.
jnr

[Jason Wilson]

Yes,
I have noticed that too.

And in my case it was also leaving the entire ramp in there.

Ever since that happened I have not been using the 2 features at the same time so I'm not sure that I can recreate the files for you to see.

I guess I could just do a dummy run and export the file to you.

Let me get back to you shortly.

Thanks

[Jason Wilson]

Hello,

I am experiencing the same problem again.

Also keep in mind that since my last post about this issue we have had a Retrofit upgrading our hard drive and software.

I have copied the CNC FIle and Export and will be emailing to the address previously posted.

Please let me know what we can do to fix this
Thanks

JMW

[Daniel Vonderheide]

The issue is in your double pass settings. You have both, the size to perform double pass, and the size to leave skin on double pass, set to the same values. THis means that anything it sees as needing a double pass it will also leave the skin on. In this case, because you have a large ramp in and a max penetration,, it is leaving the ramp. If you go into your double pass settings and change the size to leave skin on to zero, you will see that it creates an outline pass that finishes cutting the piece.