I got a question guys! Tweeter Sphere time. Anybody got any good ideas on how to drill a hole into a wooden sphere and keep it centered, but also doing it with limited tools? Here are some pics of my problem:
Multiple drill holes
I have an electric drill, but no drill press. no bench vise, just a couple clamps. Any ideas will be welcome!
i was going to suggest cutting a portion of the end off, like you would for an onion so it has a flat surface to sit to cut the rest of it up, but here you would use the flat surface to drill into
np man just throwing out ideas there.
Maybe put the spheres in an egg carton?
I think that might of been a legitimate suggestions ? are you having problems with them rolling on you when your drill?
And yes, it's a weird thing that's happening. As the clamp is holding it still, the bit (1 3/8" wood bit) is only 1/4" less in circumference than the sphere itself, so as you cut into the wood, the walls are getting thinner, allowing the walls to flex inward, squeezing the wood bit causing it to pinch the bit till it gets hung and then ultimately spin the sphere.
I did find a Forstner bit at harbor freight for $30, but I am trying to find an alternative for everyone that wouldn't require the buying of an expensive tool bit that would only get used once.
And again, I apologize. Thanks for the input, keep the ideas coming!
I think that with the way the carton is shaped, the force would be divided as such that after you use as much force you can physically exert(before even trying to drill, and just to see if this theory is even correct), the sphere still wouldn't move. I think it would be more likely to pop right back out than to completely smash the carton and go rolling off in another direction.
Based on that same concept, do you have any sheet metal that you could form into a cone? Or, you could try cutting a hole into a piece of wood, setting it down like a table, putting the sphere in that, and then drilling. With these ideas, the force from you pushing down would be met with the force of the table/metal cone/egg carton, which would put the pressure away from the walls that you're creating.
It would also be better if you could line the hole/point of contact with something soft like weatherstripping or foam to get as tight of a fit as possible, ensuring that the sphere wouldn't move(with the egg carton, because it's so flimsy, you wouldn't need this).
I am gonna make a trip to harbor freight in the morning sometime, and I am gonna see of I can find something cheaper than a Fornster bit that will work, and do the same job. I even looked at a hole saw. They are pretty cheap, but I can't find one in the 1 3/8" size that would be needed. It would make a perfectly round hole on the edge of the sphere, and maybe I could use just regular drill bits to drill out the unnecessary wood in the middle.