I don’t. I came up with the idea myself after having burned my fingers on the drivers 
. I can grab some photos for you if you like. I also included links to the components I used below. For the heat sinks I just measured the driver chips and cut them to size with a hacksaw and cleaned them up on a bench grinder and wire wheel. You can get ones that are already the correct size but I like the tall fins. Take note however I do not have my electronics in the standard enclosure from inventables. I am also using an 80mm pc fan for cooling. As for dust on the steppers and V wheels the best option is some acrylic strips placed along the y axis makerslides. Most people combine that with the y axis stiffening mod. You can find info on that in this post.