One of the engineers at my job got me to draft something up for him. At this point I'm finished the general shape of the object, with most of the important details. This last part though is a really difficult shape to create in 3D and I've made an attempt to replicate it but I'm having a tough time. Any advice? Any good commands I can use to further detail this and make it more accurate to what is represented in the picture? It doesn't have to be perfect in it's dimensions, this is just extra that I'm doing to both impress the engineer and improve my 3D drafting skills. I want him to be able to look at the inner components of this in 3D and go "WOW, you really got the details in there!"
Okay enough talk, here's a picture of what I'm trying to draw. Keep in mind that what's important is the twizzler/helix nozzle part.
And here's what I've drawn:
What I did was drew a circle that lined up with the hex nut, then I used the SWEEP command to have a rectangle sweep along the path of that circle, creating the first green ring. Then I used the HELIX command to draw a helix that pointed outwards. Once again I used the SWEEP command to make a rectangle sweep along the path of the helix. It didn't come out quite like I wanted to. I tried to extrude a rectangle along the path with a taper angle but ACAD wouldn't allow me to do that.
I've since then drawn a bunch of polylines that trace each of the 4 corners that make up the square that spirals up in the original photo. I tried making 3D surfaces with these lines but once again Autocad wouldn't let me. I tried closing the PLines but by doing so, lines were adjoined in areas that would screw up the process of creating surfaces or solids.
Any help would be appreciated. I've attached a copy of this drawing to my post, in case you want to open it up and see what I have. It includes 3 examples of what I've drawn so far, and the really dumb object that I had in place before trying to get the nozzle done in more detail.