Cutting through 3/4 pine

[DHP56]

I am cutting through 3/4 pine and am not satisfied with the edge finish I am getting. I am using a 2 flute upcut bit running at 13000 rpm and feed rate of 2 inches per second. Any suggestions would be appreicated.

[steve_g]

What diameter bit are you using? The larger the diameter the easier to get a good cut! Are you using a spiral flute bit? A straight bit tends to “hammer” at the edge. Exactly what are you dissatisfied with? Are you getting chip out? Fuzzies? Photos or more information will help us help you!
SG

[DHP56]

What diameter bit are you using? The larger the diameter the easier to get a good cut! Are you using a spiral flute bit? A straight bit tends to “hammer” at the edge. Exactly what are you dissatisfied with? Are you getting chip out? Fuzzies? Photos or more information will help us help you!
SG


I am using a 1/4" dia spiral 2 flute and am getting the fuzzy edge you descirbe.

[steve_g]

Some wood just has more of a tendency to fuzz… is this something new? Has your method given clean cuts in the past?
Here’s what I’d try:


New, sharp bit
Larger diameter bit
Change direction of cut. If you were cutting conventional, try a climb cut, generally a conventional cut is smoother but some days the rules don’t seem to always work!
Try cutting using the onion skin method… I won’t bother you with the details unless you need them, then I’ll write a treatise on it.


I hope these suggestions help! Others may chime in too if I forgot anything. As a last resort, fuzzies sand off well after a coat of shellac to stand them up…
SG