How to accomplish a wood machining task, and is there a bit that would do it?
I've envisioned something that might turn out to be over my head, but I'm hoping with a little thought and help, it wont turn out to be too bad.
If this were in days of yore, I'd be talking to a cooper, but I don't know any.
Ok, so what I'm trying to do is make a wooden tub.
I want to make it from, lets say, 100 2 inch slats, plus tongue and groove width.
I'm open to the specific shape of the tone and grooves. I've envisioned anything from a blunt wedge like this,
------\ \ -----------------
---A---| | B
to something like the thomas the train wooden railway tongue and grooves. I can't draw that in ascii, the but the main point is that I want some kind of joint that improves total surface area of the slat joint, so that water expansion will cause it to seal up tight.
The main thing I'm looking for is a shape that is either easy to get get right, or small error tolerant, or both.
It would be NICE for the joint to be more like the thomas rail joint, or like a very loose dovetail etc, as it holding itself in place while I set it all up and install the metal band around the outside would be helpful, but that is not required. Being error tolerant and pitchable (is that a word?) is the big deal.
Once I have that shape, I'll be figuring out how to create a 2 degree offset on each of the slats so that the total angle for both sides is 4 degrees.
So, the shape of the tongue also needs to lend itself to being slightly offset without requiring a CNC to get it right.
I suspect that no matter how careful I am, the final 1-2 pieces will be a bit custom to close the circle.
I wanted to also angle the slats so that the top was 2 inches +t&g and the bottom was 1.5 inches +t&g, but that just seemed like asking for trouble.
At the end, I'll route a dado into the end of each slat, which will be used to fit onto the bit circular floor of the tub. Which will be constructed in the same way. So I'll be putting slats into the slots on the slats.
Open to opinions as to why this is a terrible idea, or how to do it better, or best of all, how to accomplish my goal.
That goal in summary:
develop either a jig, or a procedure, that allows me to make 100 2 degree angled tongues of some kind, and 100 2 degree angled grooves that match the tongue, (with one groove and one tongue on each piece). A single bit or bitset that can do this would be amazing, but I suspect I'll be left with using some other kind of bit and some creative cutting.