Wondering if anyone has had issues in the past with horizontal passes in the past?
Running a simple box and I seem to get peaks and valleys a bit. Thinking the machine is fine as I’ve run flat ops before (from Carbide Create) and they seemed to have worked fine. Bit looked good. No wobble on the part.
Hmmmm - looks like the links you posted are broken - probably have a bunch of carriage returns inserted into them at some point in the posting process. If they are photos can you add them into the post?
Fixed pics (hopefully).
Not thinking its a tram issue. Again I’ve run smooth flat surface finishes in the past with carbide create. I’ll finish up this job (and hand sand [eugh]) this piece to get the surfaces flat and then run a face job on something else as a test.
What kind of wood is that? What bit are you using? Speed, feed, plunge?
I ask what wood first for a reason. I’ve had some woods that just don’t cut well no matter what I’ve tried. Some tend to spit splinters and the varying densities and sap woods make the cuts smooth, then sticky, then pull out along the grain, then cut just fine again. The other stuff I mentioned will all feed into cuts that look like that too.
Edit:Sorry, just realized this was on a Nomad, so I removed a couple lines above that are SO3 related.
Bit was a 1/8th inch flat end mill. I swapped to a fresh one for the last pass, and inspected the previous one. I don’t think the bit would account for the climbing feature. Wood is cherry. 7000rpm. 700mm/min. Plunge has been variable. I think for this last pass it was .5 mm. For roughing I’m using 2mm, which has been mostly good. I think I’ve had this issue a bit in a few woods, so I don’t think its the material.
Here’s a picture from the roughing. Used a long reach ball endmill there. I’m getting no real obvious issues other than in the bottom left, which I attribute to just being a slight missed segment.
Cherry is hard, really hard. That long reach end mill might be deflecting, looks like a lot of stick out. Do you have a shorter end mill that will reach all of the features? What happens if you slow it down and use a shorter end mill?
That’s also where the wood grain goes almost vertical - unless your endmill is extremely sharp and your stepover small, some grain following, all sorts of goofy.
Be aware that although carbide is awesome, and lasts nearly forever in softer materials like wood and plastic, it is -not- as sharp as HSS. Sometimes, that’s the ticket (I prefer it for aluminum, for example).