I finally did a multi-hr carve with my new 1000m. Overall the carve took about 3 hours with a roughing and finishing pass. I was very happy with the results for my first more complicated carve. There were a few items that made me wonder.
The parms I used are:
Rough: .25" 2 flute bit, 60 ipm, 30 ipm plunge, .1 doc, 40% step over. Dewalt at 2.
Finish: .0625" 2 flute bit, 60 ipm, 30 ipm plunge, .003 doc, 40% step over. Dewalt at 2.
The wood is poplar.
First off, during the roughing pass, I had some slight chatter occuring during long, straight cuts on the X axis. I tried speeding up the feed rate, slowing down the feed rate, speeding up the spindle, slowing down the spindle, combination of previous, etc… I ended up back at 60" at setting 2. The only thing I did not try to reducing the DOC.
I’ve attached a video trying to show the chatter.
Is this normal, minimal or extreme amount of chatter? What can I do to reduce or eliminate?
In the second picture, there is a line that happened across the “S” indicated by 1. Also there was some roughness left indicated by 2. Any ideas?
In the last picture there was some “finishing” left in some places around some of the characters. What can be done to reduce this?
If someone can point me in the right directions, I will glad to search for solutions. I just don’t have the vocabulary to know what to use in my search.