#Openscad youtube how to#
The motivated student could also probably clean up my train-wreck of code and/or figure out how to do arrays in OpenSCAD.
Hint: start by making a module ``epitrochoidBandFast(n, r, thickness, r_off)". The motivated student can modify the code so it generates epicycloidal-based profiles.
Most of the contemporary designs appear to be based on an offset epicycloid, more closely resembling Figure V in the patent. Hill described in his 1928 patent "Internal Rotor", number 1,682,563: Note that this design is based on an offset hypocycloid, similar to Figure I in Hill's patent. If you want a practical printable speed reducer, you might consider one of the other alternatives like the worm drives on this Tank or differential planetary gears or cascaded spur gears or this planetary gear reducer There are several cycloidal-type mechanisms already on Thingiverse, such as and There are also several interesting external sites like: and many many interesting youtube videos such as This present script is based on a design by M.F. As with the Wankel Engine and Roots Blower I recently posted, this is intended more as an example of an interesting mechanism than as a practical device. You can also raise the "faces" number to get smoother spheres and change the "step" to a smaller angle to make the spheres go closer together. To make the braid longer, change the value 360 to a larger number in the "for" loop. The slope at peaks and troughs was also forced to zero. The wave(th) polynomial was fitted to phase angles where the Z height needed to peak or trough.
This braid was made using the code below. There are a lot more that needs to be done to make it as (or even more) usable as the native OpenSCAD GUI, but I plan to get there in the coming month. If you guys want to take a look, here’s what that looks like: I’ve started experimenting with the idea, and while there is still a lot to do and a lot to figure out and optimize in terms of workflow, I have built something that has reached usability level. So, I’ve had an itch I wanted to scratch for a very long time: the power and quickness of OpenSCAD for modeling, married with the power and depth of Blender for 3D navigation (and many other things). However, I am also a very long time Blender user, which IMO is unparalleled in the FOSS world for many things, but specifically for 3D navigation and interacting with 3D geometry in general. One of the things I would probably mill are wooden dowels and floating tenons. I am going to get my first CNC machine this week (a cheap 3018, nothing to write home about) and trying to figure out in advance how to do some things. Long time user of OpenSCAD here, which - as someone with a coder background - is my favorite tool for creating quick CAD-like objects. Hi everyone, I am very new to this CNC thing, so please forgive me if it is a stupid question. I've only looked at the one shape but I notice with the cylinder that without labels the second vale is assumed to be "r1" rather than "r", which means there is no specified value for "r2" so it is given a default value of 1. The label might be redundant, but I don't see any need for it to break the code. Within the parenthesis of a function, If you put a labeled variable in front of an unlabeled variable, (even if it is in sequence) this seems to foul up the operation. Hay guys, I only just noticed these quirks to do with inputting arguments, and was curious to know what other people made of them, would you consider them bugs?