Another reason why you're not seeing too many DIY Follow Focus projects anymore, here's another new and cheaper follow focus system listed on the market. Doesn't look pretty but the listing claims it's made of aluminum (mostly anodized black), ABS, and rubber. Comes with a quick release 15mm clamp style mount and universal lens gear.
With the quick release style clamp, It can be mounted on both left and right side of the camera, but the gear on the box is also reversible. It also has both vertical and horizontal height adjustments, overall a decent feature set retailing for only $88 dollars. Obviously it all boils down to how effective the gearbox is in the FF, but you can find more images and information via eBay (Click Here).
Cheap 15mm Quick Release Follow Focus
Keep in mind you'll still need a basic set of 15mm Rails to mount. Your basic set should include two 15mm Rods, a Camera Baseplate (to mount your camera), and a Tripod Mount (to attach the rails to your fluid head) - like this basic set (found here).
15mm Rails Camera Baseplate and Tripod Mount
Canon 60D with Ikan F3 Friction Follow Focus System on 85mm F/1.2
I finally had some time to test out the Ikan F3 Friction Follow Focus system, it's actually quite neat. What's there to really say about it? It's built with quality parts, and it does the job for any entry level DSLR shooter looking for a first time follow focus system. It's a friction based system so no geared rings required. Position it to just about any lens and it will immediately improve the ergonomics of focusing. The unit I have here has a dual rod mount adapter, but the F3 was also designed with a clever standard 1/4 x 20 thread for even more mounting possibilities.
If you've got a Rod rig, Tripod, Shoulder Support, from the left, to the right, over the top or even from the bottom, you really have no excuses on why you can't mount this thing. DSLR or Mini Camcorder, I bet it will even work just fine on those tiny little focus wheels on a Canon HV30 - can't do that with a ring geared FF. Just from the flexible Power Arm alone there's a hundred different places to lock it in place. It's obviously super lightweight, and not too shabby on the price. Many of us don't have an enormous collection of lenses, so If you're looking for a simple and effective follow focus that works, Ikan's got a good thing here. You won't find too many follow focus systems that have the flexibility to mount onto just about any camera and any lens combination like this. Here's the link over at B&H (which is cheaper than through the Ikan website): Ikan F3 Friction Follow Focus system
Or check out more information about the additional accessories for the F3 Follow Focus system over at Ikan's website: https://ikancorp.com/productInfo.php?id=232