Originally Posted by
scottp55
Randy, searching for that bit. Was it a straight or upcut? Wondering if it was 61-040 that came with Desktop starter set(that little bit does LOTS of stuff its not supposed to). Hopefully cutting branding iron soon, be nice if it was.
The bit is an upcut 0flute. I've tracked down the number, Onsrud 63-510 1/8 dia 1/4" length of cut and 2" overall length. As i said, it's meant for acrylic. It also has a less aggressive shear angle on the tip for plunge cutting and less "ribs" on the outside of the spiral compared to the bits meant for brass and aluminum. As i mentioned, it lasts longer and has less breakage. I can cut two-three sheets of smaller parts then shown in the video ( 36x96 sheets) with more detail then this project on the same bit. Considering Grainger sells them for $45 each, it's not bad at all for costs. This also cuts down on the hand work due to the smaller radius in the corners. Everything needs to be square at the corners for the bending break to do it's job properly.
I don't always indulge in evil scientific research...but when i do. I make the parts on a ShopBot.