This project turned out pretty good except for the artifacts seen in the photos. I used a 1/16" tapered bull nose. Did I set up the machine wrong or is this normal for hardwood (oak I think)?
Be patient, help will come. I don’t have the answer but sooner or later someone with the answer will chime in.
Generic reply, but should cover it: - play with speeds and feeds and other cut parameters - something might just be a little off - try a different material - is the endmill the correct geometry / flute count for your material - is the endmill sharp - do a final cleanup pass -
Thanks for the advice Peter. A few comments regarding your reply. The End Mill is brand new and has two flutes. A finishing pass sounds like a great idea. To do a finishing pass would I simply rerun the same G-Code or would I modify it somewhat? Thanks, Scott
Depends on the setup and CAM The right way is to leave a little stock, and CAM up a finishing pass properly. Rerunning it may work - but less ideal - also depends on how well you will be able to reestablish Zero/Origin too
Nice piece of wood, but not oak. Did you only use the 1/16" inch ball nose, or did you rough it out with a larger one? What software are you using? When I do carves, I rough it out with a 1/4" (or larger if it is a big project) ball nose and it removes most of what needs to be removed. Then I follow up with a 1/8" ball nose for the finishing pass and usually it will be 90 degrees to the roughing pass. Rarely have I needed smaller than 1/8" ball nose. On small projects I have used as small as a 2mm ball nose for the finishing past. Yours looks like it has a lot of small details so the 1/16" was probably the right choice.
I noticed that the problem is on the bottom of the Y axis mostly, nothing on the top. Could it be a deflection of the bit do to the grain of the wood?
Giarc, Thanks for responding to my post. Hers are the answers to your questions: Nice piece of wood, but not oak. Oh can you tell me the species? Did you only use the 1/16" inch ball nose, or did you rough it out with a larger one? Yes … roughed out with a 1/8" end mill What software are you using? Carveco Maker formally Artcam Regards, Scott
Not sure but I am having problems with the Y axis. The machine is a LEAD CNC 1510 and I am getting a lot of lead screw slap because the leads screws are not under tension. I am trying to purchase a tension kit like the Tingle Tension System but so far not luck. Scott
Available here: Tension Nut (Nut) Thrust Bearing (Thrust Bearings) C-Beam Motor Mount Plate (Replacement plates)
