Question for wood machinists, how could you make a shell like spiral out of wood? With similar top down look as a spiral staircase but in a cone shape. So wider at the top and narrow at base?
How could this be made
Question for wood machinists, how could you make a shell like spiral out of wood? With similar top down look as a spiral staircase but in a cone shape. So wider at the top and narrow at base?
Side view, sealed along spiral path
Your question makes no sense.
Not totally clear what you're after, but if it's what I think it is then Google "conical spiral staircase," or maybe "helical spiral staircase."
ESL ass post
Yeah sorry guys. Excuse my explanation. I want to make a spiral horn for a sub woofer using wood using a vortex sort of shape. Is that any better. Didn't know a better place to ask people that would know.
https://www.finewoodworking.com/readerproject/2021/12/21/conical-spiral-cedar-shell
google spiral shell wood next time
It would be extraordinarily difficult, you'd be much better off 3d printing it.
If you must insist on wood you will need to find a master craftsman to build something that intricate.
For an audio horn you could probably use wooden veneers cut to a shape that could be rolled into the tapered spiral guide part and glued to hold that shape (cold molding) and then inserted and glued into a corresponding cone shape made the same way to approximate what pirel would look like whole
Why the frick would you do that? It has no benefits. Plus proper horn loaded subs are massive as frick
Yeah its for an 18 inch. Instead of the horn coming from the rear at 90 degrees to the listener, i want to try it firing from the front through a vortex. Could you please elaborate on it being of no benefit? Thanks
There's a lot of math involved in horn setups. An 18" horn loaded sub is massive as frick and that design isn't it
Yeah im aware of the size and math involved in horns. 3 meters usually in length roughly and tuned accordingly with correct mouth size. Im kinda just thinking out loud. Could the right horn length and opening not be achieved through a spiral? Same principle but different design? Cheers for the message. Whats the drivers in those cabs? Bet the neighbours love you
I'm certainly no expert on speaker design but it would seem that whether it's a loudspeaker or a musical horn, when they are folded or coiled they are still oriented in one plane so that sound reflected at curves and corners still gives maximum forward impetus to that reflected energy.
Introducing a two axis spiral element to a horn shape seems intuitively like it would multiply the loss of energy that bouncing sound waves through a bent tube or channel creates even when its oriented along one plane.
Thanks for the reply.
Single K-473 18” woofer
Only 1 18. Thats some cab
>sub woofer
try looking over at deviantart
Side view
Many thanks
As i thought. It really wants to be wood really as i can see the stresses involved might cause 3d printed materials to fail. Im not to educated in 3d printing. I thought that i could machine 24 circles with a sort of yin yang teardrop hollow in each layer gradually getting smaller following the side view exterior dimensions with an angled edge so the layer below lines up with the teardrop shape from the larger circle. Each layer twists 15 degrees or more depending on how many total turns i require
A series of thin wooden rings that could be stacked with each one becoming progressively larger or smaller will create a funnel shape...
Doing the same thing and maintaining alignment of each layer with a central axis line while rotating each layers outer edge slightly to one side each time will cause it to spiral.
With a full 360 spiral it would take 24 layers of 18mm birch ply and would be a total of 432mm deep.
Cheers guys got it.
Use a sander and just sculpt it into shape.
3d printer + wood filament. The shell construction is an inherently additive creation, like a 3d printer. You can attempt it with a 5axis on a block of wood too I suppose.
Slice the design as in this picture and cnc or laser or scrollsaw it out of thin sheets, then laminate sheets together. If you have a cnc you could mill it to be smooth walled on the inside, otherwise just sand it
it doesn't matter, you won't do it.
It would take a lot of cigarettes