Hey everyone,
I've been trying to turn some breast cancer pens, but they always turn out really bad near the ends of the blanks. When I put the tubes in, I notice that there is always room for the tube to wiggle in the hole I drilled in the blank on both ends. It isnt a perfect fit.
I thought this would be ok, but after turning down to size, shaping, and then buffing, the hole being too large causes a very thin wall to the blank near the tips that is almost completely transparent. I painted the tubes, but with how thin the wall is, it still looks horrible. I'm drilling the blanks on the lathe and I notice the drill bit sometimes jumps a millimeter or less when it starts to drill into the blank.
Do I have a defective jacob's chuck? Is this a common problem?
Also, it seems the center band for these kits is way too big. I'm using the bushings the kit said to use, but the center band is way oversized.
Here are some images of the see-through problem at the edges.
imgur: the simple image sharer
I've been trying to turn some breast cancer pens, but they always turn out really bad near the ends of the blanks. When I put the tubes in, I notice that there is always room for the tube to wiggle in the hole I drilled in the blank on both ends. It isnt a perfect fit.
I thought this would be ok, but after turning down to size, shaping, and then buffing, the hole being too large causes a very thin wall to the blank near the tips that is almost completely transparent. I painted the tubes, but with how thin the wall is, it still looks horrible. I'm drilling the blanks on the lathe and I notice the drill bit sometimes jumps a millimeter or less when it starts to drill into the blank.
Do I have a defective jacob's chuck? Is this a common problem?
Also, it seems the center band for these kits is way too big. I'm using the bushings the kit said to use, but the center band is way oversized.
Here are some images of the see-through problem at the edges.
imgur: the simple image sharer