redwood wrote:Well now I know why Michael used a ball nose bit to pocket the earth in his Celestial Trundle Toys.
Actually, I used the 0.0625" Tapered BN for a couple reasons:
- the tip is small enough to get into the nooks and crannies (especially the "Earth" continents)
- the taper of the bit minimizes chipout (sort of an automatic "Draft angle")
- the tapered BN is much stronger than a straight 0.0625" EM so it won't break as easily (in fact, I've never broken a tapered 0.0625" BN...I did break a 0.125" long-reach BN once, though. But it only had a 1-degree taper, so was more fragile)